Merge branch 'v3' into mdfix

2024-12-09 18:03:59 +03:00
64 changed files with 654 additions and 1225 deletions
--- a/.gitea/workflows/job_coverage.yml
+++ b/.gitea/workflows/job_coverage.yml
@@ -1,51 +0,0 @@
-name: coverage
-
-on:
-  push:
-    branches: [ main, v3, v4 ]
-  pull_request:
-    branches: [ main, v3, v4 ]
-  # Allows you to run this workflow manually from the Actions tab
-  workflow_dispatch:
-
-jobs:
-
-  build:
-    runs-on: ubuntu-latest
-    steps:
-    - name: checkout code
-      uses: actions/checkout@v4
-      with:
-        filter: 'blob:none'
-
-    - name: setup go
-      uses: actions/setup-go@v5
-      with:
-        cache-dependency-path: "**/*.sum"
-        go-version: 'stable' 
-
-    - name: test coverage
-      run: |
-        go test -v -cover ./... -covermode=count -coverprofile coverage.out -coverpkg ./...
-        go tool cover -func coverage.out -o coverage.out
-
-    - name: coverage badge
-      uses: tj-actions/coverage-badge-go@v2
-      with:
-        green: 80
-        filename: coverage.out
-
-    - uses: stefanzweifel/git-auto-commit-action@v4
-      name: autocommit
-      with:
-        commit_message: Apply Code Coverage Badge
-        skip_fetch: true
-        skip_checkout: true
-        file_pattern: ./README.md
-
-    - name: push
-      if: steps.auto-commit-action.outputs.changes_detected == 'true'
-      uses: ad-m/github-push-action@master
-      with:
-        github_token: ${{ github.token }}
-        branch: ${{ github.ref }}
--- a/.gitea/workflows/job_lint.yml
+++ b/.gitea/workflows/job_lint.yml
@@ -12,18 +12,15 @@ jobs:
  lint:
    runs-on: ubuntu-latest
    steps:
-    - name: checkout code
-      uses: actions/checkout@v4
-      with:
-        filter: 'blob:none'
-    - name: setup go
+    - name: setup-go
      uses: actions/setup-go@v5
      with:
-        cache-dependency-path: "**/*.sum"
-        go-version: 'stable' 
-    - name: setup deps
-      run: go get -v ./...
-    - name: run lint
+        go-version: 'stable'
+    - name: checkout
+      uses: actions/checkout@v3
+    - name: deps
+      run: go get -v -d ./...
+    - name: lint
      uses: https://github.com/golangci/golangci-lint-action@v6
      with:
        version: 'latest'
--- a/.gitea/workflows/job_test.yml
+++ b/.gitea/workflows/job_test.yml
@@ -17,18 +17,15 @@ jobs:
  test:
    runs-on: ubuntu-latest
    steps:
-    - name: checkout code
-      uses: actions/checkout@v4
-      with:
-        filter: 'blob:none'
-    - name: setup go
+    - name: setup-go
      uses: actions/setup-go@v5
      with:
-        cache-dependency-path: "**/*.sum"
        go-version: 'stable'
-    - name: setup deps
-      run: go get -v ./...
-    - name: run test
+    - name: checkout
+      uses: actions/checkout@v3
+    - name: deps
+      run: go get -v -d ./...
+    - name: test
      env:
        INTEGRATION_TESTS: yes
      run: go test -mod readonly -v ./...
--- a/.gitea/workflows/job_tests.yml
+++ b/.gitea/workflows/job_tests.yml
@@ -1,53 +0,0 @@
-name: test
-
-on:
-  pull_request:
-    types: [opened, reopened, synchronize]
-    branches:
-    - master
-    - v3
-    - v4
-  push:
-    branches:
-    - master
-    - v3
-    - v4
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-    steps:
-    - name: checkout code
-      uses: actions/checkout@v4
-      with:
-        filter: 'blob:none'
-    - name: checkout tests
-      uses: actions/checkout@v4
-      with:
-        ref: master
-        filter: 'blob:none'
-        repository: unistack-org/micro-tests
-        path: micro-tests
-    - name: setup go
-      uses: actions/setup-go@v5
-      with:
-        cache-dependency-path: "**/*.sum"
-        go-version: 'stable'
-    - name: setup go work
-      env:
-        GOWORK: /workspace/${{ github.repository_owner }}/go.work
-      run: |
-        go work init
-        go work use .
-        go work use micro-tests
-    - name: setup deps
-      env:
-        GOWORK: /workspace/${{ github.repository_owner }}/go.work
-      run: go get -v ./...
-    - name: run tests
-      env:
-        INTEGRATION_TESTS: yes
-        GOWORK: /workspace/${{ github.repository_owner }}/go.work
-      run: |
-        cd micro-tests
-        go test -mod readonly -v ./... || true
--- a/README.md
+++ b/README.md
@@ -1,9 +1,4 @@
-# Micro
-![Coverage](https://img.shields.io/badge/Coverage-44.7%25-yellow)
-[![License](https://img.shields.io/:license-apache-blue.svg)](https://opensource.org/licenses/Apache-2.0)
-[![Doc](https://img.shields.io/badge/go.dev-reference-007d9c?logo=go&logoColor=white&style=flat-square)](https://pkg.go.dev/go.unistack.org/micro/v3?tab=overview)
-[![Status](https://git.unistack.org/unistack-org/micro/actions/workflows/job_tests.yml/badge.svg?branch=v3)](https://git.unistack.org/unistack-org/micro/actions?query=workflow%3Abuild+branch%3Av3+event%3Apush)
-[![Lint](https://goreportcard.com/badge/go.unistack.org/micro/v3)](https://goreportcard.com/report/go.unistack.org/micro/v3)
+# Micro [![License](https://img.shields.io/:license-apache-blue.svg)](https://opensource.org/licenses/Apache-2.0) [![Doc](https://img.shields.io/badge/go.dev-reference-007d9c?logo=go&logoColor=white&style=flat-square)](https://pkg.go.dev/github.com/unistack-org/micro/v3?tab=overview) [![Status](https://github.com/unistack-org/micro/workflows/build/badge.svg?branch=master)](https://github.com/unistack-org/micro/actions?query=workflow%3Abuild+branch%3Amaster+event%3Apush) [![Lint](https://goreportcard.com/badge/go.unistack.org/micro/v3)](https://goreportcard.com/report/go.unistack.org/micro/v3) [![Coverage](https://codecov.io/gh/unistack-org/micro/branch/v3/graph/badge.svg?token=OZPO2LP7VS)](https://codecov.io/gh/unistack-org/micro)

 Micro is a standard library for microservices.

@@ -15,20 +10,30 @@ Micro provides the core requirements for distributed systems development includi

 Micro abstracts away the details of distributed systems. Here are the main features.

+- **Authentication** - Auth is built in as a first class citizen. Authentication and authorization enable secure 
+zero trust networking by providing every service an identity and certificates. This additionally includes rule 
+based access control.
+
 - **Dynamic Config** - Load and hot reload dynamic config from anywhere. The config interface provides a way to load application 
-level config from any source such as env vars, cmdline, file, consul, vault... You can merge the sources and even define fallbacks.
+level config from any source such as env vars, file, etcd. You can merge the sources and even define fallbacks.

 - **Data Storage** - A simple data store interface to read, write and delete records. It includes support for memory, file and 
-s3. State and persistence becomes a core requirement beyond prototyping and Micro looks to build that into the framework.
+CockroachDB by default. State and persistence becomes a core requirement beyond prototyping and Micro looks to build that into the framework.

 - **Service Discovery** - Automatic service registration and name resolution. Service discovery is at the core of micro service 
 development. When service A needs to speak to service B it needs the location of that service.

+- **Load Balancing** - Client side load balancing built on service discovery. Once we have the addresses of any number of instances 
+of a service we now need a way to decide which node to route to. We use random hashed load balancing to provide even distribution 
+across the services and retry a different node if there's a problem. 
+
 - **Message Encoding** - Dynamic message encoding based on content-type. The client and server will use codecs along with content-type 
 to seamlessly encode and decode Go types for you. Any variety of messages could be encoded and sent from different clients. The client 
 and server handle this by default.

- **Async Messaging** - Pub/Sub is built in as a first class citizen for asynchronous communication and event driven architectures.
+- **Transport** - gRPC or http based request/response with support for bidirectional streaming. We provide an abstraction for synchronous communication. A request made to a service will be automatically resolved, load balanced, dialled and streamed.
+
+- **Async Messaging** - PubSub is built in as a first class citizen for asynchronous communication and event driven architectures.
 Event notifications are a core pattern in micro service development.

 - **Synchronization** - Distributed systems are often built in an eventually consistent manner. Support for distributed locking and 
@@ -37,6 +42,10 @@ leadership are built in as a Sync interface. When using an eventually consistent
 - **Pluggable Interfaces** - Micro makes use of Go interfaces for each system abstraction. Because of this these interfaces 
 are pluggable and allows Micro to be runtime agnostic.

+## Getting Started
+
+To be created.
+
 ## License

 Micro is Apache 2.0 licensed.
--- a/broker/context.go
+++ b/broker/context.go
@@ -15,15 +15,6 @@ func FromContext(ctx context.Context) (Broker, bool) {
 	return c, ok
 }

-// MustContext returns broker from passed context
-func MustContext(ctx context.Context) Broker {
-	b, ok := FromContext(ctx)
-	if !ok {
-		panic("missing broker")
-	}
-	return b
-}
-
 // NewContext savess broker in context
 func NewContext(ctx context.Context, s Broker) context.Context {
 	if ctx == nil {
--- a/broker/memory/memory.go
+++ b/broker/memory/memory.go
@@ -109,7 +109,7 @@ func (m *memoryBroker) Init(opts ...broker.Option) error {
 	m.funcSubscribe = m.fnSubscribe
 	m.funcBatchSubscribe = m.fnBatchSubscribe

-	m.opts.Hooks.EachPrev(func(hook options.Hook) {
+	m.opts.Hooks.EachNext(func(hook options.Hook) {
 		switch h := hook.(type) {
 		case broker.HookPublish:
 			m.funcPublish = h(m.funcPublish)
--- a/broker/noop.go
+++ b/broker/noop.go
@@ -59,7 +59,7 @@ func (b *NoopBroker) Init(opts ...Option) error {
 	b.funcSubscribe = b.fnSubscribe
 	b.funcBatchSubscribe = b.fnBatchSubscribe

-	b.opts.Hooks.EachPrev(func(hook options.Hook) {
+	b.opts.Hooks.EachNext(func(hook options.Hook) {
 		switch h := hook.(type) {
 		case HookPublish:
 			b.funcPublish = h(b.funcPublish)
--- a/client/context.go
+++ b/client/context.go
@@ -15,15 +15,6 @@ func FromContext(ctx context.Context) (Client, bool) {
 	return c, ok
 }

-// MustContext get client from context
-func MustContext(ctx context.Context) Client {
-	c, ok := FromContext(ctx)
-	if !ok {
-		panic("missing client")
-	}
-	return c
-}
-
 // NewContext put client in context
 func NewContext(ctx context.Context, c Client) context.Context {
 	if ctx == nil {
--- a/client/noop.go
+++ b/client/noop.go
@@ -194,7 +194,7 @@ func (n *noopClient) Init(opts ...Option) error {
 	n.funcPublish = n.fnPublish
 	n.funcBatchPublish = n.fnBatchPublish

-	n.opts.Hooks.EachPrev(func(hook options.Hook) {
+	n.opts.Hooks.EachNext(func(hook options.Hook) {
 		switch h := hook.(type) {
 		case HookCall:
 			n.funcCall = h(n.funcCall)
@@ -588,6 +588,7 @@ func (n *noopClient) publish(ctx context.Context, ps []Message, opts ...PublishO

 	for _, p := range ps {
 		md := metadata.Copy(omd)
+		md[metadata.HeaderContentType] = p.ContentType()
 		topic := p.Topic()
 		if len(exchange) > 0 {
 			topic = exchange
@@ -599,8 +600,6 @@ func (n *noopClient) publish(ctx context.Context, ps []Message, opts ...PublishO
 			md.Set(k, v)
 		}

-		md[metadata.HeaderContentType] = p.ContentType()
-
 		var body []byte

 		// passed in raw data
--- a/codec/codec.go
+++ b/codec/codec.go
@@ -3,8 +3,6 @@ package codec

 import (
 	"errors"
-
-	"gopkg.in/yaml.v3"
 )

 var (
@@ -56,22 +54,3 @@ func (m *RawMessage) UnmarshalJSON(data []byte) error {
 	*m = append((*m)[0:0], data...)
 	return nil
 }
-
-// MarshalYAML returns m as the JSON encoding of m.
-func (m *RawMessage) MarshalYAML() ([]byte, error) {
-	if m == nil {
-		return []byte("null"), nil
-	} else if len(*m) == 0 {
-		return []byte("null"), nil
-	}
-	return *m, nil
-}
-
-// UnmarshalYAML sets *m to a copy of data.
-func (m *RawMessage) UnmarshalYAML(n *yaml.Node) error {
-	if m == nil {
-		return errors.New("RawMessage UnmarshalYAML on nil pointer")
-	}
-	*m = append((*m)[0:0], []byte(n.Value)...)
-	return nil
-}
--- a/codec/context.go
+++ b/codec/context.go
@@ -15,15 +15,6 @@ func FromContext(ctx context.Context) (Codec, bool) {
 	return c, ok
 }

-// MustContext returns codec from context
-func MustContext(ctx context.Context) Codec {
-	c, ok := FromContext(ctx)
-	if !ok {
-		panic("missing codec")
-	}
-	return c
-}
-
 // NewContext put codec in context
 func NewContext(ctx context.Context, c Codec) context.Context {
 	if ctx == nil {
--- a/codec/frame.go
+++ b/codec/frame.go
@@ -1,7 +1,5 @@
 package codec

-import "gopkg.in/yaml.v3"
-
 // Frame gives us the ability to define raw data to send over the pipes
 type Frame struct {
 	Data []byte
@@ -22,17 +20,6 @@ func (m *Frame) UnmarshalJSON(data []byte) error {
 	return m.Unmarshal(data)
 }

-// MarshalYAML returns frame data
-func (m *Frame) MarshalYAML() ([]byte, error) {
-	return m.Marshal()
-}
-
-// UnmarshalYAML set frame data
-func (m *Frame) UnmarshalYAML(n *yaml.Node) error {
-	m.Data = []byte(n.Value)
-	return nil
-}
-
 // ProtoMessage noop func
 func (m *Frame) ProtoMessage() {}

--- a/config/context.go
+++ b/config/context.go
@@ -15,15 +15,6 @@ func FromContext(ctx context.Context) (Config, bool) {
 	return c, ok
 }

-// MustContext returns store from context
-func MustContext(ctx context.Context) Config {
-	c, ok := FromContext(ctx)
-	if !ok {
-		panic("missing config")
-	}
-	return c
-}
-
 // NewContext put store in context
 func NewContext(ctx context.Context, c Config) context.Context {
 	if ctx == nil {
--- a/config/default.go
+++ b/config/default.go
@@ -37,7 +37,7 @@ func (c *defaultConfig) Init(opts ...Option) error {
 	c.funcLoad = c.fnLoad
 	c.funcSave = c.fnSave

-	c.opts.Hooks.EachPrev(func(hook options.Hook) {
+	c.opts.Hooks.EachNext(func(hook options.Hook) {
 		switch h := hook.(type) {
 		case HookLoad:
 			c.funcLoad = h(c.funcLoad)
--- a/config/default_test.go
+++ b/config/default_test.go
@@ -8,6 +8,7 @@ import (
 	"time"

 	"go.unistack.org/micro/v3/config"
+	mid "go.unistack.org/micro/v3/util/id"
 	mtime "go.unistack.org/micro/v3/util/time"
 )

@@ -114,6 +115,8 @@ func TestDefault(t *testing.T) {

 	if conf.IDValue == "" {
 		t.Fatalf("id value empty")
+	} else if len(conf.IDValue) != mid.DefaultSize {
+		t.Fatalf("id value invalid: %s", conf.IDValue)
 	}
 	_ = conf
 	// t.Logf("%#+v\n", conf)
--- a/flow/context.go
+++ b/flow/context.go
@@ -15,15 +15,6 @@ func FromContext(ctx context.Context) (Flow, bool) {
 	return c, ok
 }

-// MustContext returns Flow from context
-func MustContext(ctx context.Context) Flow {
-	f, ok := FromContext(ctx)
-	if !ok {
-		panic("missing flow")
-	}
-	return f
-}
-
 // NewContext stores Flow to context
 func NewContext(ctx context.Context, f Flow) context.Context {
 	if ctx == nil {
--- a/go.mod
+++ b/go.mod
@@ -1,43 +1,33 @@
 module go.unistack.org/micro/v3

-go 1.22.0
+go 1.22

 require (
-	dario.cat/mergo v1.0.1
-	github.com/DATA-DOG/go-sqlmock v1.5.2
+	dario.cat/mergo v1.0.0
+	github.com/DATA-DOG/go-sqlmock v1.5.0
 	github.com/KimMachineGun/automemlimit v0.6.1
-	github.com/ash3in/uuidv8 v1.2.0
-	github.com/google/uuid v1.6.0
-	github.com/matoous/go-nanoid v1.5.1
+	github.com/google/uuid v1.3.0
 	github.com/patrickmn/go-cache v2.1.0+incompatible
 	github.com/silas/dag v0.0.0-20220518035006-a7e85ada93c5
 	go.uber.org/automaxprocs v1.6.0
 	go.unistack.org/micro-proto/v3 v3.4.1
-	golang.org/x/sync v0.10.0
-	google.golang.org/grpc v1.69.2
-	google.golang.org/protobuf v1.36.1
+	golang.org/x/sync v0.3.0
+	google.golang.org/grpc v1.57.0
+	google.golang.org/protobuf v1.33.0
 	gopkg.in/yaml.v3 v3.0.1
 )

 require (
-	github.com/cilium/ebpf v0.16.0 // indirect
-	github.com/containerd/cgroups/v3 v3.0.4 // indirect
-	github.com/containerd/log v0.1.0 // indirect
-	github.com/coreos/go-systemd/v22 v22.5.0 // indirect
-	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
-	github.com/docker/go-units v0.5.0 // indirect
-	github.com/godbus/dbus/v5 v5.1.0 // indirect
-	github.com/moby/sys/userns v0.1.0 // indirect
-	github.com/opencontainers/runtime-spec v1.2.0 // indirect
+	github.com/cilium/ebpf v0.9.1 // indirect
+	github.com/containerd/cgroups/v3 v3.0.1 // indirect
+	github.com/coreos/go-systemd/v22 v22.3.2 // indirect
+	github.com/docker/go-units v0.4.0 // indirect
+	github.com/godbus/dbus/v5 v5.0.4 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/opencontainers/runtime-spec v1.0.2 // indirect
 	github.com/pbnjay/memory v0.0.0-20210728143218-7b4eea64cf58 // indirect
-	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
-	github.com/rogpeppe/go-internal v1.13.1 // indirect
-	github.com/sirupsen/logrus v1.9.3 // indirect
-	github.com/stretchr/testify v1.10.0 // indirect
-	go.uber.org/goleak v1.3.0 // indirect
-	golang.org/x/exp v0.0.0-20241210194714-1829a127f884 // indirect
-	golang.org/x/net v0.33.0 // indirect
-	golang.org/x/sys v0.28.0 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20241216192217-9240e9c98484 // indirect
-	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
+	github.com/sirupsen/logrus v1.8.1 // indirect
+	golang.org/x/net v0.14.0 // indirect
+	golang.org/x/sys v0.11.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20230526203410-71b5a4ffd15e // indirect
 )
--- a/go.sum
+++ b/go.sum
@@ -1,103 +1,80 @@
-dario.cat/mergo v1.0.1 h1:Ra4+bf83h2ztPIQYNP99R6m+Y7KfnARDfID+a+vLl4s=
-dario.cat/mergo v1.0.1/go.mod h1:uNxQE+84aUszobStD9th8a29P2fMDhsBdgRYvZOxGmk=
-github.com/DATA-DOG/go-sqlmock v1.5.2 h1:OcvFkGmslmlZibjAjaHm3L//6LiuBgolP7OputlJIzU=
-github.com/DATA-DOG/go-sqlmock v1.5.2/go.mod h1:88MAG/4G7SMwSE3CeA0ZKzrT5CiOU3OJ+JlNzwDqpNU=
+dario.cat/mergo v1.0.0 h1:AGCNq9Evsj31mOgNPcLyXc+4PNABt905YmuqPYYpBWk=
+dario.cat/mergo v1.0.0/go.mod h1:uNxQE+84aUszobStD9th8a29P2fMDhsBdgRYvZOxGmk=
+github.com/DATA-DOG/go-sqlmock v1.5.0 h1:Shsta01QNfFxHCfpW6YH2STWB0MudeXXEWMr20OEh60=
+github.com/DATA-DOG/go-sqlmock v1.5.0/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
 github.com/KimMachineGun/automemlimit v0.6.1 h1:ILa9j1onAAMadBsyyUJv5cack8Y1WT26yLj/V+ulKp8=
 github.com/KimMachineGun/automemlimit v0.6.1/go.mod h1:T7xYht7B8r6AG/AqFcUdc7fzd2bIdBKmepfP2S1svPY=
-github.com/ash3in/uuidv8 v1.2.0 h1:2oogGdtCPwaVtyvPPGin4TfZLtOGE5F+W++E880G6SI=
-github.com/ash3in/uuidv8 v1.2.0/go.mod h1:BnU0wJBxnzdEKmVg4xckBkD+VZuecTFTUP3M0dWgyY4=
-github.com/cilium/ebpf v0.16.0 h1:+BiEnHL6Z7lXnlGUsXQPPAE7+kenAd4ES8MQ5min0Ok=
-github.com/cilium/ebpf v0.16.0/go.mod h1:L7u2Blt2jMM/vLAVgjxluxtBKlz3/GWjB0dMOEngfwE=
-github.com/containerd/cgroups/v3 v3.0.4 h1:2fs7l3P0Qxb1nKWuJNFiwhp2CqiKzho71DQkDrHJIo4=
-github.com/containerd/cgroups/v3 v3.0.4/go.mod h1:SA5DLYnXO8pTGYiAHXz94qvLQTKfVM5GEVisn4jpins=
-github.com/containerd/log v0.1.0 h1:TCJt7ioM2cr/tfR8GPbGf9/VRAX8D2B4PjzCpfX540I=
-github.com/containerd/log v0.1.0/go.mod h1:VRRf09a7mHDIRezVKTRCrOq78v577GXq3bSa3EhrzVo=
-github.com/coreos/go-systemd/v22 v22.5.0 h1:RrqgGjYQKalulkV8NGVIfkXQf6YYmOyiJKk8iXXhfZs=
-github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/cilium/ebpf v0.9.1 h1:64sn2K3UKw8NbP/blsixRpF3nXuyhz/VjRlRzvlBRu4=
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+gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
+gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
--- a/logger/context.go
+++ b/logger/context.go
@@ -4,6 +4,17 @@ import "context"

 type loggerKey struct{}

+// MustContext returns logger from passed context or DefaultLogger if empty
+func MustContext(ctx context.Context) Logger {
+	if ctx == nil {
+		return DefaultLogger.Clone()
+	}
+	if l, ok := ctx.Value(loggerKey{}).(Logger); ok && l != nil {
+		return l
+	}
+	return DefaultLogger.Clone()
+}
+
 // FromContext returns logger from passed context
 func FromContext(ctx context.Context) (Logger, bool) {
 	if ctx == nil {
@@ -13,15 +24,6 @@ func FromContext(ctx context.Context) (Logger, bool) {
 	return l, ok
 }

-// MustContext returns logger from passed context or DefaultLogger if empty
-func MustContext(ctx context.Context) Logger {
-	l, ok := FromContext(ctx)
-	if !ok {
-		panic("missing logger")
-	}
-	return l
-}
-
 // NewContext stores logger into passed context
 func NewContext(ctx context.Context, l Logger) context.Context {
 	if ctx == nil {
--- a/logger/options.go
+++ b/logger/options.go
@@ -2,11 +2,9 @@ package logger

 import (
 	"context"
-	"fmt"
 	"io"
 	"log/slog"
 	"os"
-	"slices"
 	"time"

 	"go.unistack.org/micro/v3/meter"
@@ -31,6 +29,7 @@ type Options struct {
 	StacktraceKey string
 	// Name holds the logger name
 	Name string
+
 	// Out holds the output writer
 	Out io.Writer
 	// Context holds exernal options
@@ -39,10 +38,12 @@ type Options struct {
 	Meter meter.Meter
 	// TimeFunc used to obtain current time
 	TimeFunc func() time.Time
+
 	// Fields holds additional metadata
 	Fields []interface{}
 	// ContextAttrFuncs contains funcs that executed before log func on context
 	ContextAttrFuncs []ContextAttrFunc
+
 	// callerSkipCount number of frmaes to skip
 	CallerSkipCount int
 	// The logging level the logger should log
@@ -51,8 +52,6 @@ type Options struct {
 	AddSource bool
 	// AddStacktrace controls writing of stacktaces on error
 	AddStacktrace bool
-	// DedupKeys deduplicate keys in log output
-	DedupKeys bool
 }

 // NewOptions creates new options struct
@@ -84,36 +83,10 @@ func WithContextAttrFuncs(fncs ...ContextAttrFunc) Option {
 	}
 }

-// WithDedupKeys dont log duplicate keys
-func WithDedupKeys(b bool) Option {
-	return func(o *Options) {
-		o.DedupKeys = b
-	}
-}
-
 // WithAddFields add fields for the logger
 func WithAddFields(fields ...interface{}) Option {
 	return func(o *Options) {
-		if o.DedupKeys {
-			for i := 0; i < len(o.Fields); i += 2 {
-				for j := 0; j < len(fields); j += 2 {
-					iv, iok := o.Fields[i].(string)
-					jv, jok := fields[j].(string)
-					if iok && jok && iv == jv {
-						fmt.Printf("AAAA o.Fields:%v old:%v new:%v\n", o.Fields[i], o.Fields[i+1], fields[j+1])
-						o.Fields[i+1] = fields[j+1]
-						fmt.Printf("BBBB o.Fields:%v old:%v new:%v\n", o.Fields[i], o.Fields[i+1], fields[j+1])
-						fields = slices.Delete(fields, j, j+2)
-
-					}
-				}
-			}
-			if len(fields) > 0 {
-				o.Fields = append(o.Fields, fields...)
-			}
-		} else {
-			o.Fields = append(o.Fields, fields...)
-		}
+		o.Fields = append(o.Fields, fields...)
 	}
 }

--- a/logger/slog/slog.go
+++ b/logger/slog/slog.go
@@ -2,7 +2,6 @@ package slog

 import (
 	"context"
-	"io"
 	"log/slog"
 	"os"
 	"reflect"
@@ -11,7 +10,6 @@ import (
 	"strconv"
 	"sync"
 	"sync/atomic"
-	"time"

 	"go.unistack.org/micro/v3/logger"
 	"go.unistack.org/micro/v3/semconv"
@@ -22,7 +20,6 @@ const (
 	badKey = "!BADKEY"
 	// defaultCallerSkipCount used by logger
 	defaultCallerSkipCount = 3
-	timeFormat             = "2006-01-02T15:04:05.000000000Z07:00"
 )

 var reTrace = regexp.MustCompile(`.*/slog/logger\.go.*\n`)
@@ -65,7 +62,6 @@ func (s *slogLogger) renameAttr(_ []string, a slog.Attr) slog.Attr {
 		a.Key = s.opts.SourceKey
 	case slog.TimeKey:
 		a.Key = s.opts.TimeKey
-		a.Value = slog.StringValue(a.Value.Time().Format(timeFormat))
 	case slog.MessageKey:
 		a.Key = s.opts.MessageKey
 	case slog.LevelKey:
@@ -146,7 +142,6 @@ func (s *slogLogger) Fields(fields ...interface{}) logger.Logger {
 	s.mu.RUnlock()

 	l := &slogLogger{opts: options}
-	logger.WithAddFields(fields...)(&l.opts)

 	if len(options.ContextAttrFuncs) == 0 {
 		options.ContextAttrFuncs = logger.DefaultContextAttrFuncs
@@ -228,10 +223,6 @@ func (s *slogLogger) Error(ctx context.Context, msg string, attrs ...interface{}

 func (s *slogLogger) Fatal(ctx context.Context, msg string, attrs ...interface{}) {
 	s.printLog(ctx, logger.FatalLevel, msg, attrs...)
-	if closer, ok := s.opts.Out.(io.Closer); ok {
-		closer.Close()
-	}
-	time.Sleep(1 * time.Second)
 	os.Exit(1)
 }

@@ -278,7 +269,7 @@ func (s *slogLogger) printLog(ctx context.Context, lvl logger.Level, msg string,
 		}
 	}

-	if s.opts.AddStacktrace && (lvl == logger.FatalLevel || lvl == logger.ErrorLevel) {
+	if s.opts.AddStacktrace && lvl == logger.ErrorLevel {
 		stackInfo := make([]byte, 1024*1024)
 		if stackSize := runtime.Stack(stackInfo, false); stackSize > 0 {
 			traceLines := reTrace.Split(string(stackInfo[:stackSize]), -1)
--- a/logger/slog/slog_test.go
+++ b/logger/slog/slog_test.go
@@ -9,126 +9,12 @@ import (
 	"log/slog"
 	"strings"
 	"testing"
-	"time"

 	"github.com/google/uuid"
 	"go.unistack.org/micro/v3/logger"
 	"go.unistack.org/micro/v3/metadata"
-	"go.unistack.org/micro/v3/util/buffer"
 )

-// always first to have proper check
-func TestStacktrace(t *testing.T) {
-	ctx := context.TODO()
-	buf := bytes.NewBuffer(nil)
-	l := NewLogger(logger.WithLevel(logger.DebugLevel), logger.WithOutput(buf),
-		WithHandlerFunc(slog.NewTextHandler),
-		logger.WithAddStacktrace(true),
-	)
-	if err := l.Init(logger.WithFields("key1", "val1")); err != nil {
-		t.Fatal(err)
-	}
-
-	l.Error(ctx, "msg1", errors.New("err"))
-
-	if !bytes.Contains(buf.Bytes(), []byte(`slog_test.go:32`)) {
-		t.Fatalf("logger error not works, buf contains: %s", buf.Bytes())
-	}
-}
-
-func TestDelayedBuffer(t *testing.T) {
-	ctx := context.TODO()
-	buf := bytes.NewBuffer(nil)
-	dbuf := buffer.NewDelayedBuffer(100, 100*time.Millisecond, buf)
-	l := NewLogger(logger.WithLevel(logger.ErrorLevel), logger.WithOutput(dbuf),
-		WithHandlerFunc(slog.NewTextHandler),
-		logger.WithAddStacktrace(true),
-	)
-	if err := l.Init(logger.WithFields("key1", "val1")); err != nil {
-		t.Fatal(err)
-	}
-
-	l.Error(ctx, "msg1", errors.New("err"))
-	time.Sleep(120 * time.Millisecond)
-	if !bytes.Contains(buf.Bytes(), []byte(`key1=val1`)) {
-		t.Fatalf("logger delayed buffer not works, buf contains: %s", buf.Bytes())
-	}
-}
-
-func TestTime(t *testing.T) {
-	ctx := context.TODO()
-	buf := bytes.NewBuffer(nil)
-	l := NewLogger(logger.WithLevel(logger.ErrorLevel), logger.WithOutput(buf),
-		WithHandlerFunc(slog.NewTextHandler),
-		logger.WithAddStacktrace(true),
-		logger.WithTimeFunc(func() time.Time {
-			return time.Unix(0, 0)
-		}),
-	)
-	if err := l.Init(logger.WithFields("key1", "val1")); err != nil {
-		t.Fatal(err)
-	}
-
-	l.Error(ctx, "msg1", errors.New("err"))
-
-	if !bytes.Contains(buf.Bytes(), []byte(`timestamp=1970-01-01T03:00:00.000000000+03:00`)) &&
-		!bytes.Contains(buf.Bytes(), []byte(`timestamp=1970-01-01T00:00:00.000000000Z`)) {
-		t.Fatalf("logger error not works, buf contains: %s", buf.Bytes())
-	}
-}
-
-func TestWithFields(t *testing.T) {
-	ctx := context.TODO()
-	buf := bytes.NewBuffer(nil)
-	l := NewLogger(logger.WithLevel(logger.InfoLevel), logger.WithOutput(buf),
-		WithHandlerFunc(slog.NewTextHandler),
-		logger.WithDedupKeys(true),
-	)
-	if err := l.Init(logger.WithFields("key1", "val1")); err != nil {
-		t.Fatal(err)
-	}
-
-	l.Info(ctx, "msg1")
-
-	l = l.Fields("key1", "val2")
-
-	l.Info(ctx, "msg2")
-
-	if !bytes.Contains(buf.Bytes(), []byte(`msg=msg2 key1=val1`)) {
-		t.Fatalf("logger error not works, buf contains: %s", buf.Bytes())
-	}
-}
-
-func TestWithDedupKeysWithAddFields(t *testing.T) {
-	ctx := context.TODO()
-	buf := bytes.NewBuffer(nil)
-	l := NewLogger(logger.WithLevel(logger.InfoLevel), logger.WithOutput(buf),
-		WithHandlerFunc(slog.NewTextHandler),
-		logger.WithDedupKeys(true),
-	)
-	if err := l.Init(logger.WithFields("key1", "val1")); err != nil {
-		t.Fatal(err)
-	}
-
-	l.Info(ctx, "msg1")
-
-	if err := l.Init(logger.WithAddFields("key2", "val2")); err != nil {
-		t.Fatal(err)
-	}
-
-	l.Info(ctx, "msg2")
-
-	if err := l.Init(logger.WithAddFields("key2", "val3", "key1", "val4")); err != nil {
-		t.Fatal(err)
-	}
-
-	l.Info(ctx, "msg3")
-
-	if !bytes.Contains(buf.Bytes(), []byte(`msg=msg3 key1=val4 key2=val3`)) {
-		t.Fatalf("logger error not works, buf contains: %s", buf.Bytes())
-	}
-}
-
 func TestWithHandlerFunc(t *testing.T) {
 	ctx := context.TODO()
 	buf := bytes.NewBuffer(nil)
--- a/metadata/context.go
+++ b/metadata/context.go
@@ -24,17 +24,6 @@ func FromIncomingContext(ctx context.Context) (Metadata, bool) {
 	return md.md, ok
 }

-// MustIncomingContext returns metadata from incoming ctx
-// returned metadata shoud not be modified or race condition happens.
-// If metadata not exists panics.
-func MustIncomingContext(ctx context.Context) Metadata {
-	md, ok := FromIncomingContext(ctx)
-	if !ok {
-		panic("missing metadata")
-	}
-	return md
-}
-
 // FromOutgoingContext returns metadata from outgoing ctx
 // returned metadata shoud not be modified or race condition happens
 func FromOutgoingContext(ctx context.Context) (Metadata, bool) {
@@ -48,17 +37,6 @@ func FromOutgoingContext(ctx context.Context) (Metadata, bool) {
 	return md.md, ok
 }

-// MustOutgoingContext returns metadata from outgoing ctx
-// returned metadata shoud not be modified or race condition happens.
-// If metadata not exists panics.
-func MustOutgoingContext(ctx context.Context) Metadata {
-	md, ok := FromOutgoingContext(ctx)
-	if !ok {
-		panic("missing metadata")
-	}
-	return md
-}
-
 // FromContext returns metadata from the given context
 // returned metadata shoud not be modified or race condition happens
 func FromContext(ctx context.Context) (Metadata, bool) {
@@ -72,16 +50,6 @@ func FromContext(ctx context.Context) (Metadata, bool) {
 	return md.md, ok
 }

-// MustContext returns metadata from the given context
-// returned metadata shoud not be modified or race condition happens
-func MustContext(ctx context.Context) Metadata {
-	md, ok := FromContext(ctx)
-	if !ok {
-		panic("missing metadata")
-	}
-	return md
-}
-
 // NewContext creates a new context with the given metadata
 func NewContext(ctx context.Context, md Metadata) context.Context {
 	if ctx == nil {
@@ -143,7 +111,7 @@ func AppendOutgoingContext(ctx context.Context, kv ...string) context.Context {
 	for k, v := range md {
 		omd.Set(k, v)
 	}
-	return ctx
+	return NewOutgoingContext(ctx, omd)
 }

 // AppendIncomingContext apends new md to context
@@ -159,21 +127,5 @@ func AppendIncomingContext(ctx context.Context, kv ...string) context.Context {
 	for k, v := range md {
 		omd.Set(k, v)
 	}
-	return ctx
-}
-
-// AppendContext apends new md to context
-func AppendContext(ctx context.Context, kv ...string) context.Context {
-	md, ok := Pairs(kv...)
-	if !ok {
-		return ctx
-	}
-	omd, ok := FromContext(ctx)
-	if !ok {
-		return NewContext(ctx, md)
-	}
-	for k, v := range md {
-		omd.Set(k, v)
-	}
-	return ctx
+	return NewIncomingContext(ctx, omd)
 }
--- a/metadata/metadata.go
+++ b/metadata/metadata.go
@@ -67,14 +67,6 @@ func (md Metadata) Iterator() *Iterator {
 	return iter
 }

-func (md Metadata) MustGet(key string) string {
-	val, ok := md.Get(key)
-	if !ok {
-		panic("missing metadata key")
-	}
-	return val
-}
-
 // Get returns value from metadata by key
 func (md Metadata) Get(key string) (string, bool) {
 	// fast path
@@ -111,18 +103,11 @@ func (md Metadata) Del(keys ...string) {
 	}
 }

-// Copy makes a copy of the metadata
-func (md Metadata) CopyTo(dst Metadata) {
-	for k, v := range md {
-		dst[k] = v
-	}
-}
-
 // Copy makes a copy of the metadata
 func Copy(md Metadata, exclude ...string) Metadata {
 	nmd := New(len(md))
-	for k, v := range md {
-		nmd[k] = v
+	for key, val := range md {
+		nmd.Set(key, val)
 	}
 	nmd.Del(exclude...)
 	return nmd
@@ -146,7 +131,7 @@ func Merge(omd Metadata, mmd Metadata, overwrite bool) Metadata {
 		case ok && !overwrite:
 			continue
 		case val != "":
-			nmd[key] = val
+			nmd.Set(key, val)
 		case ok && val == "":
 			nmd.Del(key)
 		}
@@ -160,8 +145,6 @@ func Pairs(kv ...string) (Metadata, bool) {
 		return nil, false
 	}
 	md := New(len(kv) / 2)
-	for idx := 0; idx < len(kv); idx += 2 {
-		md[kv[idx]] = kv[idx+1]
-	}
+	md.Set(kv...)
 	return md, true
 }
--- a/metadata/metadata_test.go
+++ b/metadata/metadata_test.go
@@ -32,8 +32,8 @@ func TestMultipleUsage(t *testing.T) {
 		m.Del("key1_3")
 		return ctx
 	}(ctx)
-	_ = imd
-	_ = omd
+	t.Logf("imd %#+v", imd)
+	t.Logf("omd %#+v", omd)
 }

 func TestMetadataSetMultiple(t *testing.T) {
--- a/meter/context.go
+++ b/meter/context.go
@@ -15,15 +15,6 @@ func FromContext(ctx context.Context) (Meter, bool) {
 	return c, ok
 }

-// MustContext get meter from context
-func MustContext(ctx context.Context) Meter {
-	m, ok := FromContext(ctx)
-	if !ok {
-		panic("missing meter")
-	}
-	return m
-}
-
 // NewContext put meter in context
 func NewContext(ctx context.Context, c Meter) context.Context {
 	if ctx == nil {
--- a/network/options.go
+++ b/network/options.go
@@ -119,7 +119,7 @@ func Tracer(t tracer.Tracer) Option {
 // NewOptions returns network default options
 func NewOptions(opts ...Option) Options {
 	options := Options{
-		ID:      id.MustNew(),
+		ID:      id.Must(),
 		Name:    "go.micro",
 		Address: ":0",
 		Logger:  logger.DefaultLogger,
--- a/network/tunnel/options.go
+++ b/network/tunnel/options.go
@@ -164,7 +164,7 @@ func DialWait(b bool) DialOption {
 // NewOptions returns router default options with filled values
 func NewOptions(opts ...Option) Options {
 	options := Options{
-		ID:      id.MustNew(),
+		ID:      id.Must(),
 		Address: DefaultAddress,
 		Token:   DefaultToken,
 		Logger:  logger.DefaultLogger,
--- a/register/context.go
+++ b/register/context.go
@@ -15,15 +15,6 @@ func FromContext(ctx context.Context) (Register, bool) {
 	return c, ok
 }

-// MustContext get register from context
-func MustContext(ctx context.Context) Register {
-	r, ok := FromContext(ctx)
-	if !ok {
-		panic("missing register")
-	}
-	return r
-}
-
 // NewContext put register in context
 func NewContext(ctx context.Context, c Register) context.Context {
 	if ctx == nil {
--- a/register/extractor.go
+++ b/register/extractor.go
@@ -1,9 +1,12 @@
 package register

 import (
+	"fmt"
 	"reflect"
 	"unicode"
 	"unicode/utf8"
+
+	"go.unistack.org/micro/v3/metadata"
 )

 // ExtractValue from reflect.Type from specified depth
@@ -35,6 +38,53 @@ func ExtractValue(v reflect.Type, d int) string {
 	return v.Name()
 }

+// ExtractEndpoint extract *Endpoint from reflect.Method
+func ExtractEndpoint(method reflect.Method) *Endpoint {
+	if method.PkgPath != "" {
+		return nil
+	}
+
+	var rspType, reqType reflect.Type
+	var stream bool
+	mt := method.Type
+
+	switch mt.NumIn() {
+	case 3:
+		reqType = mt.In(1)
+		rspType = mt.In(2)
+	case 4:
+		reqType = mt.In(2)
+		rspType = mt.In(3)
+	default:
+		return nil
+	}
+
+	// are we dealing with a stream?
+	switch rspType.Kind() {
+	case reflect.Func, reflect.Interface:
+		stream = true
+	}
+
+	request := ExtractValue(reqType, 0)
+	response := ExtractValue(rspType, 0)
+	if request == "" || response == "" {
+		return nil
+	}
+
+	ep := &Endpoint{
+		Name:     method.Name,
+		Request:  request,
+		Response: response,
+		Metadata: metadata.New(0),
+	}
+
+	if stream {
+		ep.Metadata.Set("stream", fmt.Sprintf("%v", stream))
+	}
+
+	return ep
+}
+
 // ExtractSubValue exctact *Value from reflect.Type
 func ExtractSubValue(typ reflect.Type) string {
 	var reqType reflect.Type
--- a/register/extractor_test.go
+++ b/register/extractor_test.go
@@ -2,6 +2,8 @@ package register

 import (
 	"context"
+	"reflect"
+	"testing"
 )

 type TestHandler struct{}
@@ -13,3 +15,40 @@ type TestResponse struct{}
 func (t *TestHandler) Test(ctx context.Context, req *TestRequest, rsp *TestResponse) error {
 	return nil
 }
+
+func TestExtractEndpoint(t *testing.T) {
+	handler := &TestHandler{}
+	typ := reflect.TypeOf(handler)
+
+	var endpoints []*Endpoint
+
+	for m := 0; m < typ.NumMethod(); m++ {
+		if e := ExtractEndpoint(typ.Method(m)); e != nil {
+			endpoints = append(endpoints, e)
+		}
+	}
+
+	if i := len(endpoints); i != 1 {
+		t.Fatalf("Expected 1 endpoint, have %d", i)
+	}
+
+	if endpoints[0].Name != "Test" {
+		t.Fatalf("Expected handler Test, got %s", endpoints[0].Name)
+	}
+
+	if endpoints[0].Request == "" {
+		t.Fatal("Expected non nil Request")
+	}
+
+	if endpoints[0].Response == "" {
+		t.Fatal("Expected non nil Request")
+	}
+
+	if endpoints[0].Request != "TestRequest" {
+		t.Fatalf("Expected TestRequest got %s", endpoints[0].Request)
+	}
+
+	if endpoints[0].Response != "TestResponse" {
+		t.Fatalf("Expected TestResponse got %s", endpoints[0].Response)
+	}
+}
--- a/register/memory/memory.go
+++ b/register/memory/memory.go
@@ -23,10 +23,11 @@ type node struct {
 }

 type record struct {
-	Name     string
-	Version  string
-	Metadata map[string]string
-	Nodes    map[string]*node
+	Name      string
+	Version   string
+	Metadata  map[string]string
+	Nodes     map[string]*node
+	Endpoints []*register.Endpoint
 }

 type memory struct {
@@ -58,7 +59,7 @@ func (m *memory) ttlPrune() {

 	for range prune.C {
 		m.Lock()
-		for namespace, services := range m.records {
+		for domain, services := range m.records {
 			for service, versions := range services {
 				for version, record := range versions {
 					for id, n := range record.Nodes {
@@ -66,7 +67,7 @@ func (m *memory) ttlPrune() {
 							if m.opts.Logger.V(logger.DebugLevel) {
 								m.opts.Logger.Debug(m.opts.Context, fmt.Sprintf("Register TTL expired for node %s of service %s", n.ID, service))
 							}
-							delete(m.records[namespace][service][version].Nodes, id)
+							delete(m.records[domain][service][version].Nodes, id)
 						}
 					}
 				}
@@ -130,12 +131,17 @@ func (m *memory) Register(_ context.Context, s *register.Service, opts ...regist
 	options := register.NewRegisterOptions(opts...)

 	// get the services for this domain from the register
-	srvs, ok := m.records[options.Namespace]
+	srvs, ok := m.records[options.Domain]
 	if !ok {
 		srvs = make(services)
 	}

-	s.Namespace = options.Namespace
+	// domain is set in metadata so it can be passed to watchers
+	if s.Metadata == nil {
+		s.Metadata = map[string]string{"domain": options.Domain}
+	} else {
+		s.Metadata["domain"] = options.Domain
+	}

 	// ensure the service name exists
 	r := serviceToRecord(s, options.TTL)
@@ -148,8 +154,8 @@ func (m *memory) Register(_ context.Context, s *register.Service, opts ...regist
 		if m.opts.Logger.V(logger.DebugLevel) {
 			m.opts.Logger.Debug(m.opts.Context, fmt.Sprintf("Register added new service: %s, version: %s", s.Name, s.Version))
 		}
-		m.records[options.Namespace] = srvs
-		go m.sendEvent(&register.Result{Action: register.EventCreate, Service: s})
+		m.records[options.Domain] = srvs
+		go m.sendEvent(&register.Result{Action: "create", Service: s})
 	}

 	var addedNodes bool
@@ -167,6 +173,9 @@ func (m *memory) Register(_ context.Context, s *register.Service, opts ...regist
 			metadata[k] = v
 		}

+		// set the domain
+		metadata["domain"] = options.Domain
+
 		// add the node
 		srvs[s.Name][s.Version].Nodes[n.ID] = &node{
 			Node: &register.Node{
@@ -185,7 +194,7 @@ func (m *memory) Register(_ context.Context, s *register.Service, opts ...regist
 		if m.opts.Logger.V(logger.DebugLevel) {
 			m.opts.Logger.Debug(m.opts.Context, fmt.Sprintf("Register added new node to service: %s, version: %s", s.Name, s.Version))
 		}
-		go m.sendEvent(&register.Result{Action: register.EventUpdate, Service: s})
+		go m.sendEvent(&register.Result{Action: "update", Service: s})
 	} else {
 		// refresh TTL and timestamp
 		for _, n := range s.Nodes {
@@ -197,7 +206,7 @@ func (m *memory) Register(_ context.Context, s *register.Service, opts ...regist
 		}
 	}

-	m.records[options.Namespace] = srvs
+	m.records[options.Domain] = srvs
 	return nil
 }

@@ -207,8 +216,15 @@ func (m *memory) Deregister(ctx context.Context, s *register.Service, opts ...re

 	options := register.NewDeregisterOptions(opts...)

+	// domain is set in metadata so it can be passed to watchers
+	if s.Metadata == nil {
+		s.Metadata = map[string]string{"domain": options.Domain}
+	} else {
+		s.Metadata["domain"] = options.Domain
+	}
+
 	// if the domain doesn't exist, there is nothing to deregister
-	services, ok := m.records[options.Namespace]
+	services, ok := m.records[options.Domain]
 	if !ok {
 		return nil
 	}
@@ -237,16 +253,16 @@ func (m *memory) Deregister(ctx context.Context, s *register.Service, opts ...re
 	// if the nodes not empty, we replace the version in the store and exist, the rest of the logic
 	// is cleanup
 	if len(version.Nodes) > 0 {
-		m.records[options.Namespace][s.Name][s.Version] = version
-		go m.sendEvent(&register.Result{Action: register.EventUpdate, Service: s})
+		m.records[options.Domain][s.Name][s.Version] = version
+		go m.sendEvent(&register.Result{Action: "update", Service: s})
 		return nil
 	}

 	// if this version was the only version of the service, we can remove the whole service from the
 	// register and exit
 	if len(versions) == 1 {
-		delete(m.records[options.Namespace], s.Name)
-		go m.sendEvent(&register.Result{Action: register.EventDelete, Service: s})
+		delete(m.records[options.Domain], s.Name)
+		go m.sendEvent(&register.Result{Action: "delete", Service: s})

 		if m.opts.Logger.V(logger.DebugLevel) {
 			m.opts.Logger.Debug(m.opts.Context, fmt.Sprintf("Register removed service: %s", s.Name))
@@ -255,8 +271,8 @@ func (m *memory) Deregister(ctx context.Context, s *register.Service, opts ...re
 	}

 	// there are other versions of the service running, so only remove this version of it
-	delete(m.records[options.Namespace][s.Name], s.Version)
-	go m.sendEvent(&register.Result{Action: register.EventDelete, Service: s})
+	delete(m.records[options.Domain][s.Name], s.Version)
+	go m.sendEvent(&register.Result{Action: "delete", Service: s})
 	if m.opts.Logger.V(logger.DebugLevel) {
 		m.opts.Logger.Debug(m.opts.Context, fmt.Sprintf("Register removed service: %s, version: %s", s.Name, s.Version))
 	}
@@ -268,15 +284,15 @@ func (m *memory) LookupService(ctx context.Context, name string, opts ...registe
 	options := register.NewLookupOptions(opts...)

 	// if it's a wildcard domain, return from all domains
-	if options.Namespace == register.WildcardNamespace {
+	if options.Domain == register.WildcardDomain {
 		m.RLock()
 		recs := m.records
 		m.RUnlock()

 		var services []*register.Service

-		for namespace := range recs {
-			srvs, err := m.LookupService(ctx, name, append(opts, register.LookupNamespace(namespace))...)
+		for domain := range recs {
+			srvs, err := m.LookupService(ctx, name, append(opts, register.LookupDomain(domain))...)
 			if err == register.ErrNotFound {
 				continue
 			} else if err != nil {
@@ -295,7 +311,7 @@ func (m *memory) LookupService(ctx context.Context, name string, opts ...registe
 	defer m.RUnlock()

 	// check the domain exists
-	services, ok := m.records[options.Namespace]
+	services, ok := m.records[options.Domain]
 	if !ok {
 		return nil, register.ErrNotFound
 	}
@@ -312,7 +328,7 @@ func (m *memory) LookupService(ctx context.Context, name string, opts ...registe
 	var i int

 	for _, r := range versions {
-		result[i] = recordToService(r, options.Namespace)
+		result[i] = recordToService(r, options.Domain)
 		i++
 	}

@@ -323,15 +339,15 @@ func (m *memory) ListServices(ctx context.Context, opts ...register.ListOption)
 	options := register.NewListOptions(opts...)

 	// if it's a wildcard domain, list from all domains
-	if options.Namespace == register.WildcardNamespace {
+	if options.Domain == register.WildcardDomain {
 		m.RLock()
 		recs := m.records
 		m.RUnlock()

 		var services []*register.Service

-		for namespace := range recs {
-			srvs, err := m.ListServices(ctx, append(opts, register.ListNamespace(namespace))...)
+		for domain := range recs {
+			srvs, err := m.ListServices(ctx, append(opts, register.ListDomain(domain))...)
 			if err != nil {
 				return nil, err
 			}
@@ -345,7 +361,7 @@ func (m *memory) ListServices(ctx context.Context, opts ...register.ListOption)
 	defer m.RUnlock()

 	// ensure the domain exists
-	services, ok := m.records[options.Namespace]
+	services, ok := m.records[options.Domain]
 	if !ok {
 		return make([]*register.Service, 0), nil
 	}
@@ -355,7 +371,7 @@ func (m *memory) ListServices(ctx context.Context, opts ...register.ListOption)

 	for _, service := range services {
 		for _, version := range service {
-			result = append(result, recordToService(version, options.Namespace))
+			result = append(result, recordToService(version, options.Domain))
 		}
 	}

@@ -410,13 +426,16 @@ func (m *watcher) Next() (*register.Result, error) {
 				continue
 			}

-			namespace := register.DefaultNamespace
-			if r.Service.Namespace != "" {
-				namespace = r.Service.Namespace
+			// extract domain from service metadata
+			var domain string
+			if r.Service.Metadata != nil && len(r.Service.Metadata["domain"]) > 0 {
+				domain = r.Service.Metadata["domain"]
+			} else {
+				domain = register.DefaultDomain
 			}

 			// only send the event if watching the wildcard or this specific domain
-			if m.wo.Namespace == register.WildcardNamespace || m.wo.Namespace == namespace {
+			if m.wo.Domain == register.WildcardDomain || m.wo.Domain == domain {
 				return r, nil
 			}
 		case <-m.exit:
@@ -435,6 +454,11 @@ func (m *watcher) Stop() {
 }

 func serviceToRecord(s *register.Service, ttl time.Duration) *record {
+	metadata := make(map[string]string, len(s.Metadata))
+	for k, v := range s.Metadata {
+		metadata[k] = v
+	}
+
 	nodes := make(map[string]*node, len(s.Nodes))
 	for _, n := range s.Nodes {
 		nodes[n.ID] = &node{
@@ -444,19 +468,42 @@ func serviceToRecord(s *register.Service, ttl time.Duration) *record {
 		}
 	}

+	endpoints := make([]*register.Endpoint, len(s.Endpoints))
+	copy(endpoints, s.Endpoints)
+
 	return &record{
-		Name:    s.Name,
-		Version: s.Version,
-		Nodes:   nodes,
+		Name:      s.Name,
+		Version:   s.Version,
+		Metadata:  metadata,
+		Nodes:     nodes,
+		Endpoints: endpoints,
 	}
 }

-func recordToService(r *record, namespace string) *register.Service {
+func recordToService(r *record, domain string) *register.Service {
 	metadata := make(map[string]string, len(r.Metadata))
 	for k, v := range r.Metadata {
 		metadata[k] = v
 	}

+	// set the domain in metadata so it can be determined when a wildcard query is performed
+	metadata["domain"] = domain
+
+	endpoints := make([]*register.Endpoint, len(r.Endpoints))
+	for i, e := range r.Endpoints {
+		md := make(map[string]string, len(e.Metadata))
+		for k, v := range e.Metadata {
+			md[k] = v
+		}
+
+		endpoints[i] = &register.Endpoint{
+			Name:     e.Name,
+			Request:  e.Request,
+			Response: e.Response,
+			Metadata: md,
+		}
+	}
+
 	nodes := make([]*register.Node, len(r.Nodes))
 	i := 0
 	for _, n := range r.Nodes {
@@ -476,7 +523,8 @@ func recordToService(r *record, namespace string) *register.Service {
 	return &register.Service{
 		Name:      r.Name,
 		Version:   r.Version,
+		Metadata:  metadata,
+		Endpoints: endpoints,
 		Nodes:     nodes,
-		Namespace: namespace,
 	}
 }
--- a/register/memory/memory_test.go
+++ b/register/memory/memory_test.go
@@ -253,32 +253,32 @@ func TestMemoryWildcard(t *testing.T) {

 	testSrv := &register.Service{Name: "foo", Version: "1.0.0"}

-	if err := m.Register(ctx, testSrv, register.RegisterNamespace("one")); err != nil {
+	if err := m.Register(ctx, testSrv, register.RegisterDomain("one")); err != nil {
 		t.Fatalf("Register err: %v", err)
 	}
-	if err := m.Register(ctx, testSrv, register.RegisterNamespace("two")); err != nil {
+	if err := m.Register(ctx, testSrv, register.RegisterDomain("two")); err != nil {
 		t.Fatalf("Register err: %v", err)
 	}

-	if recs, err := m.ListServices(ctx, register.ListNamespace("one")); err != nil {
+	if recs, err := m.ListServices(ctx, register.ListDomain("one")); err != nil {
 		t.Errorf("List err: %v", err)
 	} else if len(recs) != 1 {
 		t.Errorf("Expected 1 record, got %v", len(recs))
 	}

-	if recs, err := m.ListServices(ctx, register.ListNamespace("*")); err != nil {
+	if recs, err := m.ListServices(ctx, register.ListDomain("*")); err != nil {
 		t.Errorf("List err: %v", err)
 	} else if len(recs) != 2 {
 		t.Errorf("Expected 2 records, got %v", len(recs))
 	}

-	if recs, err := m.LookupService(ctx, testSrv.Name, register.LookupNamespace("one")); err != nil {
+	if recs, err := m.LookupService(ctx, testSrv.Name, register.LookupDomain("one")); err != nil {
 		t.Errorf("Lookup err: %v", err)
 	} else if len(recs) != 1 {
 		t.Errorf("Expected 1 record, got %v", len(recs))
 	}

-	if recs, err := m.LookupService(ctx, testSrv.Name, register.LookupNamespace("*")); err != nil {
+	if recs, err := m.LookupService(ctx, testSrv.Name, register.LookupDomain("*")); err != nil {
 		t.Errorf("Lookup err: %v", err)
 	} else if len(recs) != 2 {
 		t.Errorf("Expected 2 records, got %v", len(recs))
--- a/register/options.go
+++ b/register/options.go
@@ -5,7 +5,6 @@ import (
 	"crypto/tls"
 	"time"

-	"go.unistack.org/micro/v3/codec"
 	"go.unistack.org/micro/v3/logger"
 	"go.unistack.org/micro/v3/meter"
 	"go.unistack.org/micro/v3/tracer"
@@ -27,8 +26,6 @@ type Options struct {
 	Name string
 	// Addrs specifies register addrs
 	Addrs []string
-	// Codec used to marshal/unmarshal data in register
-	Codec codec.Codec
 	// Timeout specifies timeout
 	Timeout time.Duration
 }
@@ -40,7 +37,6 @@ func NewOptions(opts ...Option) Options {
 		Meter:   meter.DefaultMeter,
 		Tracer:  tracer.DefaultTracer,
 		Context: context.Background(),
-		Codec:   codec.NewCodec(),
 	}
 	for _, o := range opts {
 		o(&options)
@@ -50,17 +46,17 @@ func NewOptions(opts ...Option) Options {

 // RegisterOptions holds options for register method
 type RegisterOptions struct { // nolint: golint,revive
-	Context   context.Context
-	Namespace string
-	TTL       time.Duration
-	Attempts  int
+	Context  context.Context
+	Domain   string
+	TTL      time.Duration
+	Attempts int
 }

 // NewRegisterOptions returns register options struct filled by opts
 func NewRegisterOptions(opts ...RegisterOption) RegisterOptions {
 	options := RegisterOptions{
-		Namespace: DefaultNamespace,
-		Context:   context.Background(),
+		Domain:  DefaultDomain,
+		Context: context.Background(),
 	}
 	for _, o := range opts {
 		o(&options)
@@ -76,15 +72,15 @@ type WatchOptions struct {
 	// Other options for implementations of the interface
 	// can be stored in a context
 	Context context.Context
-	// Namespace to watch
-	Namespace string
+	// Domain to watch
+	Domain string
 }

 // NewWatchOptions returns watch options filled by opts
 func NewWatchOptions(opts ...WatchOption) WatchOptions {
 	options := WatchOptions{
-		Namespace: DefaultNamespace,
-		Context:   context.Background(),
+		Domain:  DefaultDomain,
+		Context: context.Background(),
 	}
 	for _, o := range opts {
 		o(&options)
@@ -95,8 +91,8 @@ func NewWatchOptions(opts ...WatchOption) WatchOptions {
 // DeregisterOptions holds options for deregister method
 type DeregisterOptions struct {
 	Context context.Context
-	// Namespace the service was registered in
-	Namespace string
+	// Domain the service was registered in
+	Domain string
 	// Atempts specify max attempts for deregister
 	Attempts int
 }
@@ -104,8 +100,8 @@ type DeregisterOptions struct {
 // NewDeregisterOptions returns options for deregister filled by opts
 func NewDeregisterOptions(opts ...DeregisterOption) DeregisterOptions {
 	options := DeregisterOptions{
-		Namespace: DefaultNamespace,
-		Context:   context.Background(),
+		Domain:  DefaultDomain,
+		Context: context.Background(),
 	}
 	for _, o := range opts {
 		o(&options)
@@ -116,15 +112,15 @@ func NewDeregisterOptions(opts ...DeregisterOption) DeregisterOptions {
 // LookupOptions holds lookup options
 type LookupOptions struct {
 	Context context.Context
-	// Namespace to scope the request to
-	Namespace string
+	// Domain to scope the request to
+	Domain string
 }

 // NewLookupOptions returns lookup options filled by opts
 func NewLookupOptions(opts ...LookupOption) LookupOptions {
 	options := LookupOptions{
-		Namespace: DefaultNamespace,
-		Context:   context.Background(),
+		Domain:  DefaultDomain,
+		Context: context.Background(),
 	}
 	for _, o := range opts {
 		o(&options)
@@ -134,17 +130,16 @@ func NewLookupOptions(opts ...LookupOption) LookupOptions {

 // ListOptions holds the list options for list method
 type ListOptions struct {
-	// Context used to store additional options
 	Context context.Context
-	// Namespace to scope the request to
-	Namespace string
+	// Domain to scope the request to
+	Domain string
 }

 // NewListOptions returns list options filled by opts
 func NewListOptions(opts ...ListOption) ListOptions {
 	options := ListOptions{
-		Namespace: DefaultNamespace,
-		Context:   context.Background(),
+		Domain:  DefaultDomain,
+		Context: context.Background(),
 	}
 	for _, o := range opts {
 		o(&options)
@@ -222,10 +217,10 @@ func RegisterContext(ctx context.Context) RegisterOption { // nolint: golint,rev
 	}
 }

-// RegisterNamespace secifies register Namespace
-func RegisterNamespace(d string) RegisterOption { // nolint: golint,revive
+// RegisterDomain secifies register domain
+func RegisterDomain(d string) RegisterOption { // nolint: golint,revive
 	return func(o *RegisterOptions) {
-		o.Namespace = d
+		o.Domain = d
 	}
 }

@@ -243,10 +238,10 @@ func WatchContext(ctx context.Context) WatchOption {
 	}
 }

-// WatchNamespace sets the Namespace for watch
-func WatchNamespace(d string) WatchOption {
+// WatchDomain sets the domain for watch
+func WatchDomain(d string) WatchOption {
 	return func(o *WatchOptions) {
-		o.Namespace = d
+		o.Domain = d
 	}
 }

@@ -264,10 +259,10 @@ func DeregisterContext(ctx context.Context) DeregisterOption {
 	}
 }

-// DeregisterNamespace specifies deregister Namespace
-func DeregisterNamespace(d string) DeregisterOption {
+// DeregisterDomain specifies deregister domain
+func DeregisterDomain(d string) DeregisterOption {
 	return func(o *DeregisterOptions) {
-		o.Namespace = d
+		o.Domain = d
 	}
 }

@@ -278,10 +273,10 @@ func LookupContext(ctx context.Context) LookupOption {
 	}
 }

-// LookupNamespace sets the Namespace for lookup
-func LookupNamespace(d string) LookupOption {
+// LookupDomain sets the domain for lookup
+func LookupDomain(d string) LookupOption {
 	return func(o *LookupOptions) {
-		o.Namespace = d
+		o.Domain = d
 	}
 }

@@ -292,10 +287,10 @@ func ListContext(ctx context.Context) ListOption {
 	}
 }

-// ListNamespace sets the Namespace for list method
-func ListNamespace(d string) ListOption {
+// ListDomain sets the domain for list method
+func ListDomain(d string) ListOption {
 	return func(o *ListOptions) {
-		o.Namespace = d
+		o.Domain = d
 	}
 }

@@ -305,9 +300,3 @@ func Name(n string) Option {
 		o.Name = n
 	}
 }
-
-func Codec(c codec.Codec) Option {
-	return func(o *Options) {
-		o.Codec = c
-	}
-}
--- a/register/register.go
+++ b/register/register.go
@@ -9,12 +9,12 @@ import (
 )

 const (
-	// WildcardNamespace indicates any Namespace
-	WildcardNamespace = "*"
+	// WildcardDomain indicates any domain
+	WildcardDomain = "*"
 )

-// DefaultNamespace to use if none was provided in options
-var DefaultNamespace = "micro"
+// DefaultDomain to use if none was provided in options
+var DefaultDomain = "micro"

 var (
 	// DefaultRegister is the global default register
@@ -59,17 +59,26 @@ type Register interface {

 // Service holds service register info
 type Service struct {
-	Name      string  `json:"name,omitempty"`
-	Version   string  `json:"version,omitempty"`
-	Nodes     []*Node `json:"nodes,omitempty"`
-	Namespace string  `json:"namespace,omitempty"`
+	Name      string            `json:"name"`
+	Version   string            `json:"version"`
+	Metadata  metadata.Metadata `json:"metadata"`
+	Endpoints []*Endpoint       `json:"endpoints"`
+	Nodes     []*Node           `json:"nodes"`
 }

 // Node holds node register info
 type Node struct {
-	Metadata metadata.Metadata `json:"metadata,omitempty"`
-	ID       string            `json:"id,omitempty"`
-	Address  string            `json:"address,omitempty"`
+	Metadata metadata.Metadata `json:"metadata"`
+	ID       string            `json:"id"`
+	Address  string            `json:"address"`
+}
+
+// Endpoint holds endpoint register info
+type Endpoint struct {
+	Request  string            `json:"request"`
+	Response string            `json:"response"`
+	Metadata metadata.Metadata `json:"metadata"`
+	Name     string            `json:"name"`
 }

 // Option func signature
--- a/register/watcher.go
+++ b/register/watcher.go
@@ -15,31 +15,31 @@ type Watcher interface {
 // the watcher. Actions can be create, update, delete
 type Result struct {
 	// Service holds register service
-	Service *Service `json:"service,omitempty"`
+	Service *Service
 	// Action holds the action
-	Action EventType `json:"action,omitempty"`
+	Action string
 }

 // EventType defines register event type
 type EventType int

 const (
-	// EventCreate is emitted when a new service is registered
-	EventCreate EventType = iota
-	// EventDelete is emitted when an existing service is deregistered
-	EventDelete
-	// EventUpdate is emitted when an existing service is updated
-	EventUpdate
+	// Create is emitted when a new service is registered
+	Create EventType = iota
+	// Delete is emitted when an existing service is deregistered
+	Delete
+	// Update is emitted when an existing service is updated
+	Update
 )

 // String returns human readable event type
 func (t EventType) String() string {
 	switch t {
-	case EventCreate:
+	case Create:
 		return "create"
-	case EventDelete:
+	case Delete:
 		return "delete"
-	case EventUpdate:
+	case Update:
 		return "update"
 	default:
 		return "unknown"
@@ -49,11 +49,11 @@ func (t EventType) String() string {
 // Event is register event
 type Event struct {
 	// Timestamp is event timestamp
-	Timestamp time.Time `json:"timestamp,omitempty"`
+	Timestamp time.Time
 	// Service is register service
-	Service *Service `json:"service,omitempty"`
+	Service *Service
 	// ID is register id
-	ID string `json:"id,omitempty"`
+	ID string
 	// Type defines type of event
-	Type EventType `json:"type,omitempty"`
+	Type EventType
 }
--- a/router/context.go
+++ b/router/context.go
@@ -15,15 +15,6 @@ func FromContext(ctx context.Context) (Router, bool) {
 	return c, ok
 }

-// MustContext get router from context
-func MustContext(ctx context.Context) Router {
-	r, ok := FromContext(ctx)
-	if !ok {
-		panic("missing router")
-	}
-	return r
-}
-
 // NewContext put router in context
 func NewContext(ctx context.Context, c Router) context.Context {
 	if ctx == nil {
--- a/router/options.go
+++ b/router/options.go
@@ -80,7 +80,7 @@ func Name(n string) Option {
 // NewOptions returns router default options
 func NewOptions(opts ...Option) Options {
 	options := Options{
-		ID:       id.MustNew(),
+		ID:       id.Must(),
 		Network:  DefaultNetwork,
 		Register: register.DefaultRegister,
 		Logger:   logger.DefaultLogger,
--- a/semconv/metadata.go
+++ b/semconv/metadata.go
@@ -1,18 +0,0 @@
-package semconv
-
-var (
-	// HeaderTopic is the header name that contains topic name
-	HeaderTopic = "Micro-Topic"
-	// HeaderContentType specifies content type of message
-	HeaderContentType = "Content-Type"
-	// HeaderEndpoint specifies endpoint in service
-	HeaderEndpoint = "Micro-Endpoint"
-	// HeaderService specifies service
-	HeaderService = "Micro-Service"
-	// HeaderTimeout specifies timeout of operation
-	HeaderTimeout = "Micro-Timeout"
-	// HeaderAuthorization specifies Authorization header
-	HeaderAuthorization = "Authorization"
-	// HeaderXRequestID specifies request id
-	HeaderXRequestID = "X-Request-Id"
-)
--- a/server/context.go
+++ b/server/context.go
@@ -15,15 +15,6 @@ func FromContext(ctx context.Context) (Server, bool) {
 	return c, ok
 }

-// MustContext returns Server from context
-func MustContext(ctx context.Context) Server {
-	s, ok := FromContext(ctx)
-	if !ok {
-		panic("missing server")
-	}
-	return s
-}
-
 // NewContext stores Server to context
 func NewContext(ctx context.Context, s Server) context.Context {
 	if ctx == nil {
--- a/server/noop.go
+++ b/server/noop.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"reflect"
 	"runtime/debug"
+	"sort"
 	"strings"
 	"sync"
 	"time"
@@ -31,21 +32,38 @@ const (
 )

 type rpcHandler struct {
-	opts    HandlerOptions
-	handler interface{}
-	name    string
+	opts      HandlerOptions
+	handler   interface{}
+	name      string
+	endpoints []*register.Endpoint
 }

 func newRPCHandler(handler interface{}, opts ...HandlerOption) Handler {
 	options := NewHandlerOptions(opts...)

+	typ := reflect.TypeOf(handler)
 	hdlr := reflect.ValueOf(handler)
 	name := reflect.Indirect(hdlr).Type().Name()

+	var endpoints []*register.Endpoint
+
+	for m := 0; m < typ.NumMethod(); m++ {
+		if e := register.ExtractEndpoint(typ.Method(m)); e != nil {
+			e.Name = name + "." + e.Name
+
+			for k, v := range options.Metadata[e.Name] {
+				e.Metadata[k] = v
+			}
+
+			endpoints = append(endpoints, e)
+		}
+	}
+
 	return &rpcHandler{
-		name:    name,
-		handler: handler,
-		opts:    options,
+		name:      name,
+		handler:   handler,
+		endpoints: endpoints,
+		opts:      options,
 	}
 }

@@ -57,6 +75,10 @@ func (r *rpcHandler) Handler() interface{} {
 	return r.handler
 }

+func (r *rpcHandler) Endpoints() []*register.Endpoint {
+	return r.endpoints
+}
+
 func (r *rpcHandler) Options() HandlerOptions {
 	return r.opts
 }
@@ -227,6 +249,35 @@ func (n *noopServer) Register() error {
 		return err
 	}

+	n.RLock()
+	handlerList := make([]string, 0, len(n.handlers))
+	for n := range n.handlers {
+		handlerList = append(handlerList, n)
+	}
+
+	sort.Strings(handlerList)
+
+	subscriberList := make([]*subscriber, 0, len(n.subscribers))
+	for e := range n.subscribers {
+		subscriberList = append(subscriberList, e)
+	}
+	sort.Slice(subscriberList, func(i, j int) bool {
+		return subscriberList[i].topic > subscriberList[j].topic
+	})
+
+	endpoints := make([]*register.Endpoint, 0, len(handlerList)+len(subscriberList))
+	for _, h := range handlerList {
+		endpoints = append(endpoints, n.handlers[h].Endpoints()...)
+	}
+	for _, e := range subscriberList {
+		endpoints = append(endpoints, e.Endpoints()...)
+	}
+	n.RUnlock()
+
+	service.Nodes[0].Metadata["protocol"] = "noop"
+	service.Nodes[0].Metadata["transport"] = service.Nodes[0].Metadata["protocol"]
+	service.Endpoints = endpoints
+
 	n.RLock()
 	registered := n.registered
 	n.RUnlock()
@@ -525,6 +576,7 @@ func (n *noopServer) Stop() error {
 }

 func newSubscriber(topic string, sub interface{}, opts ...SubscriberOption) Subscriber {
+	var endpoints []*register.Endpoint
 	var handlers []*handler

 	options := NewSubscriberOptions(opts...)
@@ -543,7 +595,18 @@ func newSubscriber(topic string, sub interface{}, opts ...SubscriberOption) Subs
 		}

 		handlers = append(handlers, h)
+		ep := &register.Endpoint{
+			Name:     "Func",
+			Request:  register.ExtractSubValue(typ),
+			Metadata: metadata.New(2),
+		}
+		ep.Metadata.Set("topic", topic)
+		ep.Metadata.Set("subscriber", "true")
+		endpoints = append(endpoints, ep)
 	} else {
+		hdlr := reflect.ValueOf(sub)
+		name := reflect.Indirect(hdlr).Type().Name()
+
 		for m := 0; m < typ.NumMethod(); m++ {
 			method := typ.Method(m)
 			h := &handler{
@@ -559,6 +622,14 @@ func newSubscriber(topic string, sub interface{}, opts ...SubscriberOption) Subs
 			}

 			handlers = append(handlers, h)
+			ep := &register.Endpoint{
+				Name:     name + "." + method.Name,
+				Request:  register.ExtractSubValue(method.Type),
+				Metadata: metadata.New(2),
+			}
+			ep.Metadata.Set("topic", topic)
+			ep.Metadata.Set("subscriber", "true")
+			endpoints = append(endpoints, ep)
 		}
 	}

@@ -568,6 +639,7 @@ func newSubscriber(topic string, sub interface{}, opts ...SubscriberOption) Subs
 		topic:      topic,
 		subscriber: sub,
 		handlers:   handlers,
+		endpoints:  endpoints,
 		opts:       options,
 	}
 }
@@ -651,7 +723,7 @@ func (n *noopServer) createSubHandler(sb *subscriber, opts Options) broker.Handl
 				return nil
 			}

-			opts.Hooks.EachPrev(func(hook options.Hook) {
+			opts.Hooks.EachNext(func(hook options.Hook) {
 				if h, ok := hook.(HookSubHandler); ok {
 					fn = h(fn)
 				}
@@ -694,6 +766,10 @@ func (s *subscriber) Subscriber() interface{} {
 	return s.subscriber
 }

+func (s *subscriber) Endpoints() []*register.Endpoint {
+	return s.endpoints
+}
+
 func (s *subscriber) Options() SubscriberOptions {
 	return s.opts
 }
@@ -704,7 +780,8 @@ type subscriber struct {
 	typ        reflect.Type
 	subscriber interface{}

-	handlers []*handler
+	endpoints []*register.Endpoint
+	handlers  []*handler

 	rcvr reflect.Value
 	opts SubscriberOptions
--- a/server/noop_test.go
+++ b/server/noop_test.go
@@ -9,7 +9,6 @@ import (
 	"go.unistack.org/micro/v3/client"
 	"go.unistack.org/micro/v3/codec"
 	"go.unistack.org/micro/v3/logger"
-	"go.unistack.org/micro/v3/options"
 	"go.unistack.org/micro/v3/server"
 )

@@ -85,40 +84,3 @@ func TestNoopSub(t *testing.T) {
 		}
 	}()
 }
-
-func TestHooks_Wrap(t *testing.T) {
-	n := 5
-	fn1 := func(next server.FuncSubHandler) server.FuncSubHandler {
-		return func(ctx context.Context, msg server.Message) (err error) {
-			n *= 2
-			return next(ctx, msg)
-		}
-	}
-	fn2 := func(next server.FuncSubHandler) server.FuncSubHandler {
-		return func(ctx context.Context, msg server.Message) (err error) {
-			n -= 10
-			return next(ctx, msg)
-		}
-	}
-
-	hs := &options.Hooks{}
-	hs.Append(server.HookSubHandler(fn1), server.HookSubHandler(fn2))
-
-	var fn = func(ctx context.Context, msg server.Message) error {
-		return nil
-	}
-
-	hs.EachPrev(func(hook options.Hook) {
-		if h, ok := hook.(server.HookSubHandler); ok {
-			fn = h(fn)
-		}
-	})
-
-	if err := fn(nil, nil); err != nil {
-		t.Fatal(err)
-	}
-
-	if n != 0 {
-		t.Fatalf("uncorrected hooks call")
-	}
-}
--- a/server/options.go
+++ b/server/options.go
@@ -100,7 +100,7 @@ func NewOptions(opts ...Option) Options {
 		Address:          DefaultAddress,
 		Name:             DefaultName,
 		Version:          DefaultVersion,
-		ID:               id.MustNew(),
+		ID:               id.Must(),
 		Namespace:        DefaultNamespace,
 		GracefulTimeout:  DefaultGracefulTimeout,
 	}
--- a/server/registry.go
+++ b/server/registry.go
@@ -17,7 +17,7 @@ var (

 		opts := []register.RegisterOption{
 			register.RegisterTTL(config.RegisterTTL),
-			register.RegisterNamespace(config.Namespace),
+			register.RegisterDomain(config.Namespace),
 		}

 		for i := 0; i <= config.RegisterAttempts; i++ {
@@ -36,7 +36,7 @@ var (
 		var err error

 		opts := []register.DeregisterOption{
-			register.DeregisterNamespace(config.Namespace),
+			register.DeregisterDomain(config.Namespace),
 		}

 		for i := 0; i <= config.DeregisterAttempts; i++ {
@@ -82,8 +82,9 @@ func NewRegisterService(s Server) (*register.Service, error) {
 	node.Metadata["register"] = opts.Register.String()

 	return &register.Service{
-		Name:    opts.Name,
-		Version: opts.Version,
-		Nodes:   []*register.Node{node},
+		Name:     opts.Name,
+		Version:  opts.Version,
+		Nodes:    []*register.Node{node},
+		Metadata: metadata.New(0),
 	}, nil
 }
--- a/server/server.go
+++ b/server/server.go
@@ -7,6 +7,7 @@ import (

 	"go.unistack.org/micro/v3/codec"
 	"go.unistack.org/micro/v3/metadata"
+	"go.unistack.org/micro/v3/register"
 )

 // DefaultServer default server
@@ -169,6 +170,7 @@ type Stream interface {
 type Handler interface {
 	Name() string
 	Handler() interface{}
+	Endpoints() []*register.Endpoint
 	Options() HandlerOptions
 }

@@ -178,5 +180,6 @@ type Handler interface {
 type Subscriber interface {
 	Topic() string
 	Subscriber() interface{}
+	Endpoints() []*register.Endpoint
 	Options() SubscriberOptions
 }
--- a/store/context.go
+++ b/store/context.go
@@ -15,15 +15,6 @@ func FromContext(ctx context.Context) (Store, bool) {
 	return c, ok
 }

-// MustContext get store from context
-func MustContext(ctx context.Context) Store {
-	s, ok := FromContext(ctx)
-	if !ok {
-		panic("missing store")
-	}
-	return s
-}
-
 // NewContext put store in context
 func NewContext(ctx context.Context, c Store) context.Context {
 	if ctx == nil {
--- a/store/memory/memory.go
+++ b/store/memory/memory.go
@@ -123,7 +123,7 @@ func (m *memoryStore) Init(opts ...store.Option) error {
 	m.funcList = m.fnList
 	m.funcDelete = m.fnDelete

-	m.opts.Hooks.EachPrev(func(hook options.Hook) {
+	m.opts.Hooks.EachNext(func(hook options.Hook) {
 		switch h := hook.(type) {
 		case store.HookRead:
 			m.funcRead = h(m.funcRead)
--- a/store/noop.go
+++ b/store/noop.go
@@ -54,7 +54,7 @@ func (n *noopStore) Init(opts ...Option) error {
 	n.funcList = n.fnList
 	n.funcDelete = n.fnDelete

-	n.opts.Hooks.EachPrev(func(hook options.Hook) {
+	n.opts.Hooks.EachNext(func(hook options.Hook) {
 		switch h := hook.(type) {
 		case HookRead:
 			n.funcRead = h(n.funcRead)
--- a/tracer/context.go
+++ b/tracer/context.go
@@ -18,15 +18,6 @@ func FromContext(ctx context.Context) (Tracer, bool) {
 	return nil, false
 }

-// MustContext returns a tracer from context
-func MustContext(ctx context.Context) Tracer {
-	t, ok := FromContext(ctx)
-	if !ok {
-		panic("missing tracer")
-	}
-	return t
-}
-
 // NewContext saves the tracer in the context
 func NewContext(ctx context.Context, tracer Tracer) context.Context {
 	if ctx == nil {
@@ -37,15 +28,6 @@ func NewContext(ctx context.Context, tracer Tracer) context.Context {

 type spanKey struct{}

-// SpanFromContext returns a span from context
-func SpanMustContext(ctx context.Context) Span {
-	sp, ok := SpanFromContext(ctx)
-	if !ok {
-		panic("missing span")
-	}
-	return sp
-}
-
 // SpanFromContext returns a span from context
 func SpanFromContext(ctx context.Context) (Span, bool) {
 	if ctx == nil {
--- a/tracer/memory/memory.go
+++ b/tracer/memory/memory.go
@@ -25,7 +25,6 @@ func (t *Tracer) Start(ctx context.Context, name string, opts ...tracer.SpanOpti
 		name:      name,
 		ctx:       ctx,
 		tracer:    t,
-		labels:    options.Labels,
 		kind:      options.Kind,
 		startTime: time.Now(),
 	}
@@ -38,14 +37,6 @@ func (t *Tracer) Start(ctx context.Context, name string, opts ...tracer.SpanOpti
 	return tracer.NewSpanContext(ctx, span), span
 }

-type memoryStringer struct {
-	s string
-}
-
-func (s memoryStringer) String() string {
-	return s.s
-}
-
 func (t *Tracer) Flush(_ context.Context) error {
 	return nil
 }
@@ -61,6 +52,14 @@ func (t *Tracer) Name() string {
 	return t.opts.Name
 }

+type noopStringer struct {
+	s string
+}
+
+func (s noopStringer) String() string {
+	return s.s
+}
+
 type Span struct {
 	ctx        context.Context
 	tracer     tracer.Tracer
@@ -68,8 +67,8 @@ type Span struct {
 	statusMsg  string
 	startTime  time.Time
 	finishTime time.Time
-	traceID    memoryStringer
-	spanID     memoryStringer
+	traceID    noopStringer
+	spanID     noopStringer
 	events     []*Event
 	labels     []interface{}
 	logs       []interface{}
--- a/tracer/noop.go
+++ b/tracer/noop.go
@@ -2,7 +2,6 @@ package tracer

 import (
 	"context"
-	"time"

 	"go.unistack.org/micro/v3/util/id"
 )
@@ -21,18 +20,18 @@ func (t *noopTracer) Spans() []Span {
 func (t *noopTracer) Start(ctx context.Context, name string, opts ...SpanOption) (context.Context, Span) {
 	options := NewSpanOptions(opts...)
 	span := &noopSpan{
-		name:      name,
-		ctx:       ctx,
-		tracer:    t,
-		startTime: time.Now(),
-		labels:    options.Labels,
-		kind:      options.Kind,
+		name:   name,
+		ctx:    ctx,
+		tracer: t,
+		labels: options.Labels,
+		kind:   options.Kind,
 	}
 	span.spanID.s, _ = id.New()
 	span.traceID.s, _ = id.New()
 	if span.ctx == nil {
 		span.ctx = context.Background()
 	}
+	t.spans = append(t.spans, span)
 	return NewSpanContext(ctx, span), span
 }

@@ -59,18 +58,23 @@ func (t *noopTracer) Name() string {
 	return t.opts.Name
 }

+type noopEvent struct {
+	name   string
+	labels []interface{}
+}
+
 type noopSpan struct {
-	ctx        context.Context
-	tracer     Tracer
-	name       string
-	statusMsg  string
-	startTime  time.Time
-	finishTime time.Time
-	traceID    noopStringer
-	spanID     noopStringer
-	labels     []interface{}
-	kind       SpanKind
-	status     SpanStatus
+	ctx       context.Context
+	tracer    Tracer
+	name      string
+	statusMsg string
+	traceID   noopStringer
+	spanID    noopStringer
+	events    []*noopEvent
+	labels    []interface{}
+	logs      []interface{}
+	kind      SpanKind
+	status    SpanStatus
 }

 func (s *noopSpan) TraceID() string {
@@ -82,7 +86,6 @@ func (s *noopSpan) SpanID() string {
 }

 func (s *noopSpan) Finish(_ ...SpanOption) {
-	s.finishTime = time.Now()
 }

 func (s *noopSpan) Context() context.Context {
@@ -94,6 +97,8 @@ func (s *noopSpan) Tracer() Tracer {
 }

 func (s *noopSpan) AddEvent(name string, opts ...EventOption) {
+	options := NewEventOptions(opts...)
+	s.events = append(s.events, &noopEvent{name: name, labels: options.Labels})
 }

 func (s *noopSpan) SetName(name string) {
@@ -101,6 +106,7 @@ func (s *noopSpan) SetName(name string) {
 }

 func (s *noopSpan) AddLogs(kv ...interface{}) {
+	s.logs = append(s.logs, kv...)
 }

 func (s *noopSpan) AddLabels(kv ...interface{}) {
--- a/util/buf/buf.go
+++ b/util/buf/buf.go
@@ -0,0 +1,27 @@
+package buf
+
+import (
+	"bytes"
+	"io"
+)
+
+var _ io.Closer = &Buffer{}
+
+// Buffer bytes.Buffer wrapper to satisfie io.Closer interface
+type Buffer struct {
+	*bytes.Buffer
+}
+
+// Close reset buffer contents
+func (b *Buffer) Close() error {
+	b.Buffer.Reset()
+	return nil
+}
+
+// New creates new buffer that satisfies Closer interface
+func New(b *bytes.Buffer) *Buffer {
+	if b == nil {
+		b = bytes.NewBuffer(nil)
+	}
+	return &Buffer{b}
+}
--- a/util/buffer/delayed_buffer.go
+++ b/util/buffer/delayed_buffer.go
@@ -1,85 +0,0 @@
-package buffer
-
-import (
-	"io"
-	"sync"
-	"time"
-)
-
-var _ io.WriteCloser = (*DelayedBuffer)(nil)
-
-// DelayedBuffer is the buffer that holds items until either the buffer filled or a specified time limit is reached
-type DelayedBuffer struct {
-	mu        sync.Mutex
-	maxWait   time.Duration
-	flushTime time.Time
-	buffer    chan []byte
-	ticker    *time.Ticker
-	w         io.Writer
-	err       error
-}
-
-func NewDelayedBuffer(size int, maxWait time.Duration, w io.Writer) *DelayedBuffer {
-	b := &DelayedBuffer{
-		buffer:    make(chan []byte, size),
-		ticker:    time.NewTicker(maxWait),
-		w:         w,
-		flushTime: time.Now(),
-		maxWait:   maxWait,
-	}
-	b.loop()
-	return b
-}
-
-func (b *DelayedBuffer) loop() {
-	go func() {
-		for range b.ticker.C {
-			b.mu.Lock()
-			if time.Since(b.flushTime) > b.maxWait {
-				b.flush()
-			}
-			b.mu.Unlock()
-		}
-	}()
-}
-
-func (b *DelayedBuffer) flush() {
-	bufLen := len(b.buffer)
-	if bufLen > 0 {
-		tmp := make([][]byte, bufLen)
-		for i := 0; i < bufLen; i++ {
-			tmp[i] = <-b.buffer
-		}
-		for _, t := range tmp {
-			_, b.err = b.w.Write(t)
-		}
-		b.flushTime = time.Now()
-	}
-}
-
-func (b *DelayedBuffer) Put(items ...[]byte) {
-	b.mu.Lock()
-	for _, item := range items {
-		select {
-		case b.buffer <- item:
-		default:
-			b.flush()
-			b.buffer <- item
-		}
-	}
-	b.mu.Unlock()
-}
-
-func (b *DelayedBuffer) Close() error {
-	b.mu.Lock()
-	b.flush()
-	close(b.buffer)
-	b.ticker.Stop()
-	b.mu.Unlock()
-	return b.err
-}
-
-func (b *DelayedBuffer) Write(data []byte) (int, error) {
-	b.Put(data)
-	return len(data), b.err
-}
--- a/util/buffer/delayed_buffer_test.go
+++ b/util/buffer/delayed_buffer_test.go
@@ -1,22 +0,0 @@
-package buffer
-
-import (
-	"bytes"
-	"testing"
-	"time"
-)
-
-func TestTimedBuffer(t *testing.T) {
-	buf := bytes.NewBuffer(nil)
-	b := NewDelayedBuffer(100, 300*time.Millisecond, buf)
-	for i := 0; i < 100; i++ {
-		_, _ = b.Write([]byte(`test`))
-	}
-	if buf.Len() != 0 {
-		t.Fatal("delayed write not worked")
-	}
-	time.Sleep(400 * time.Millisecond)
-	if buf.Len() == 0 {
-		t.Fatal("delayed write not worked")
-	}
-}
--- a/util/buffer/seeker_buffer.go
+++ b/util/buffer/seeker_buffer.go
@@ -1,78 +0,0 @@
-package buffer
-
-import "io"
-
-var _ interface {
-	io.ReadCloser
-	io.ReadSeeker
-} = (*SeekerBuffer)(nil)
-
-// Buffer is a ReadWriteCloser that supports seeking. It's intended to
-// replicate the functionality of bytes.Buffer that I use in my projects.
-//
-// Note that the seeking is limited to the read marker; all writes are
-// append-only.
-type SeekerBuffer struct {
-	data []byte
-	pos  int64
-}
-
-func NewSeekerBuffer(data []byte) *SeekerBuffer {
-	return &SeekerBuffer{
-		data: data,
-	}
-}
-
-func (b *SeekerBuffer) Read(p []byte) (int, error) {
-	if b.pos >= int64(len(b.data)) {
-		return 0, io.EOF
-	}
-
-	n := copy(p, b.data[b.pos:])
-	b.pos += int64(n)
-	return n, nil
-}
-
-func (b *SeekerBuffer) Write(p []byte) (int, error) {
-	b.data = append(b.data, p...)
-	return len(p), nil
-}
-
-// Seek sets the read pointer to pos.
-func (b *SeekerBuffer) Seek(offset int64, whence int) (int64, error) {
-	switch whence {
-	case io.SeekStart:
-		b.pos = offset
-	case io.SeekEnd:
-		b.pos = int64(len(b.data)) + offset
-	case io.SeekCurrent:
-		b.pos += offset
-	}
-
-	return b.pos, nil
-}
-
-// Rewind resets the read pointer to 0.
-func (b *SeekerBuffer) Rewind() error {
-	if _, err := b.Seek(0, io.SeekStart); err != nil {
-		return err
-	}
-	return nil
-}
-
-// Close clears all the data out of the buffer and sets the read position to 0.
-func (b *SeekerBuffer) Close() error {
-	b.data = nil
-	b.pos = 0
-	return nil
-}
-
-// Len returns the length of data remaining to be read.
-func (b *SeekerBuffer) Len() int {
-	return len(b.data[b.pos:])
-}
-
-// Bytes returns the underlying bytes from the current position.
-func (b *SeekerBuffer) Bytes() []byte {
-	return b.data[b.pos:]
-}
--- a/util/buffer/seeker_buffer_test.go
+++ b/util/buffer/seeker_buffer_test.go
@@ -1,55 +0,0 @@
-package buffer
-
-import (
-	"fmt"
-	"strings"
-	"testing"
-)
-
-func noErrorT(t *testing.T, err error) {
-	if nil != err {
-		t.Fatalf("%s", err)
-	}
-}
-
-func boolT(t *testing.T, cond bool, s ...string) {
-	if !cond {
-		what := strings.Join(s, ", ")
-		if len(what) > 0 {
-			what = ": " + what
-		}
-		t.Fatalf("assert.Bool failed%s", what)
-	}
-}
-
-func TestSeeking(t *testing.T) {
-	partA := []byte("hello, ")
-	partB := []byte("world!")
-
-	buf := NewSeekerBuffer(partA)
-
-	boolT(t, buf.Len() == len(partA), fmt.Sprintf("on init: have length %d, want length %d", buf.Len(), len(partA)))
-
-	b := make([]byte, 32)
-
-	n, err := buf.Read(b)
-	noErrorT(t, err)
-	boolT(t, buf.Len() == 0, fmt.Sprintf("after reading 1: have length %d, want length 0", buf.Len()))
-	boolT(t, n == len(partA), fmt.Sprintf("after reading 2: have length %d, want length %d", n, len(partA)))
-
-	n, err = buf.Write(partB)
-	noErrorT(t, err)
-	boolT(t, n == len(partB), fmt.Sprintf("after writing: have length %d, want length %d", n, len(partB)))
-
-	n, err = buf.Read(b)
-	noErrorT(t, err)
-	boolT(t, buf.Len() == 0, fmt.Sprintf("after rereading 1: have length %d, want length 0", buf.Len()))
-	boolT(t, n == len(partB), fmt.Sprintf("after rereading 2: have length %d, want length %d", n, len(partB)))
-
-	partsLen := len(partA) + len(partB)
-	_ = buf.Rewind()
-	boolT(t, buf.Len() == partsLen, fmt.Sprintf("after rewinding: have length %d, want length %d", buf.Len(), partsLen))
-
-	buf.Close()
-	boolT(t, buf.Len() == 0, fmt.Sprintf("after closing, have length %d, want length 0", buf.Len()))
-}
--- a/util/id/LICENSE
+++ b/util/id/LICENSE
@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2018-2021 Matous Dzivjak <matousdzivjak@gmail.com>
+Copyright (c) 2021 Unistack LLC <v.tolstov@unistack.org>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
--- a/util/id/id.go
+++ b/util/id/id.go
@@ -1,159 +1,112 @@
 package id

 import (
+	"context"
 	"crypto/rand"
-	"encoding/binary"
 	"errors"
-	"fmt"
-	"time"
+	"math"

-	uuidv8 "github.com/ash3in/uuidv8"
-	"github.com/google/uuid"
-	nanoid "github.com/matoous/go-nanoid"
+	"go.unistack.org/micro/v3/logger"
 )

-var generatedNode [6]byte
+// DefaultAlphabet is the alphabet used for ID characters by default
+var DefaultAlphabet = []rune("6789BCDFGHJKLMNPQRTWbcdfghjkmnpqrtwz")

-func init() {
-	if _, err := rand.Read(generatedNode[:]); err != nil {
-		panic(err)
-	}
-}
-
-type Type int
-
-const (
-	TypeUnspecified Type = iota
-	TypeNanoid
-	TypeUUIDv8
-)
-
-// DefaultNanoidAlphabet is the alphabet used for ID characters by default
-var DefaultNanoidAlphabet = "6789BCDFGHJKLMNPQRTWbcdfghjkmnpqrtwz"
-
-// DefaultNanoidSize is the size used for ID by default
+// DefaultSize is the size used for ID by default
 // To get uuid like collision specify 21
-var DefaultNanoidSize = 16
+var DefaultSize = 16

-type Generator struct {
-	opts Options
-}
-
-func (g *Generator) MustNew() string {
-	id, err := g.New()
-	if err != nil {
-		panic(err)
+// getMask generates bit mask used to obtain bits from the random bytes that are used to get index of random character
+// from the alphabet. Example: if the alphabet has 6 = (110)_2 characters it is sufficient to use mask 7 = (111)_2
+func getMask(alphabetSize int) int {
+	for i := 1; i <= 8; i++ {
+		mask := (2 << uint(i)) - 1
+		if mask >= alphabetSize-1 {
+			return mask
+		}
 	}
-	return id
-}
-
-func (g *Generator) New() (string, error) {
-	switch g.opts.Type {
-	case TypeNanoid:
-		if len(g.opts.NanoidAlphabet) == 0 || len(g.opts.NanoidAlphabet) > 255 {
-			return "", errors.New("invalid option, NanoidAlphabet must not be empty and contain no more than 255 chars")
-		}
-		if g.opts.NanoidSize <= 0 {
-			return "", errors.New("invalid option, NanoidSize must be positive integer")
-		}
-
-		return nanoid.Generate(g.opts.NanoidAlphabet, g.opts.NanoidSize)
-	case TypeUUIDv8:
-		timestamp := uint64(time.Now().UnixNano())
-		clockSeq := make([]byte, 2)
-		if _, err := rand.Read(clockSeq); err != nil {
-			return "", fmt.Errorf("failed to generate random clock sequence: %w", err)
-		}
-		clockSeqValue := binary.BigEndian.Uint16(clockSeq) & 0x0FFF // Mask to 12 bits
-		return uuidv8.NewWithParams(timestamp, clockSeqValue, g.opts.UUIDNode[:], uuidv8.TimestampBits48)
-	}
-	return "", errors.New("invalid option, Type unspecified")
+	return 0
 }

 // New returns new id or error
 func New(opts ...Option) (string, error) {
 	options := NewOptions(opts...)

-	switch options.Type {
-	case TypeNanoid:
-		if len(options.NanoidAlphabet) == 0 || len(options.NanoidAlphabet) > 255 {
-			return "", errors.New("invalid option, NanoidAlphabet must not be empty and contain no more than 255 chars")
-		}
-		if options.NanoidSize <= 0 {
-			return "", errors.New("invalid option, NanoidSize must be positive integer")
-		}
-
-		return nanoid.Generate(options.NanoidAlphabet, options.NanoidSize)
-	case TypeUUIDv8:
-		timestamp := uint64(time.Now().UnixNano())
-		clockSeq := make([]byte, 2)
-		if _, err := rand.Read(clockSeq); err != nil {
-			return "", fmt.Errorf("failed to generate random clock sequence: %w", err)
-		}
-		clockSeqValue := binary.BigEndian.Uint16(clockSeq) & 0x0FFF // Mask to 12 bits
-		return uuidv8.NewWithParams(timestamp, clockSeqValue, options.UUIDNode[:], uuidv8.TimestampBits48)
+	if len(options.Alphabet) == 0 || len(options.Alphabet) > 255 {
+		return "", errors.New("alphabet must not be empty and contain no more than 255 chars")
+	}
+	if options.Size <= 0 {
+		return "", errors.New("size must be positive integer")
 	}

-	return "", errors.New("invalid option, Type unspecified")
-}
+	chars := options.Alphabet

-func ToUUID(s string) uuid.UUID {
-	return uuid.MustParse(s)
+	mask := getMask(len(chars))
+	// estimate how many random bytes we will need for the ID, we might actually need more but this is tradeoff
+	// between average case and worst case
+	ceilArg := 1.6 * float64(mask*options.Size) / float64(len(options.Alphabet))
+	step := int(math.Ceil(ceilArg))
+
+	id := make([]rune, options.Size)
+	bytes := make([]byte, step)
+	for j := 0; ; {
+		_, err := rand.Read(bytes)
+		if err != nil {
+			return "", err
+		}
+		for i := 0; i < step; i++ {
+			currByte := bytes[i] & byte(mask)
+			if currByte < byte(len(chars)) {
+				id[j] = chars[currByte]
+				j++
+				if j == options.Size {
+					return string(id[:options.Size]), nil
+				}
+			}
+		}
+	}
 }

 // Must is the same as New but fatals on error
-func MustNew(opts ...Option) string {
+func Must(opts ...Option) string {
 	id, err := New(opts...)
 	if err != nil {
-		panic(err)
+		logger.DefaultLogger.Fatal(context.TODO(), "Must call is failed", err)
 	}
 	return id
 }

 // Options contains id deneration options
 type Options struct {
-	Type           Type
-	NanoidAlphabet string
-	NanoidSize     int
-	UUIDNode       [6]byte
+	Alphabet []rune
+	Size     int
 }

 // Option func signature
 type Option func(*Options)

-// WithNanoidAlphabet specifies alphabet to use
-func WithNanoidAlphabet(alphabet string) Option {
+// Alphabet specifies alphabet to use
+func Alphabet(alphabet string) Option {
 	return func(o *Options) {
-		o.NanoidAlphabet = alphabet
+		o.Alphabet = []rune(alphabet)
 	}
 }

-// WithNanoidSize specifies generated id size
-func WithNanoidSize(size int) Option {
+// Size specifies id size
+func Size(size int) Option {
 	return func(o *Options) {
-		o.NanoidSize = size
-	}
-}
-
-// WithUUIDNode specifies node component for UUIDv8
-func WithUUIDNode(node [6]byte) Option {
-	return func(o *Options) {
-		o.UUIDNode = node
+		o.Size = size
 	}
 }

 // NewOptions returns new Options struct filled by opts
 func NewOptions(opts ...Option) Options {
 	options := Options{
-		Type:           TypeUUIDv8,
-		NanoidAlphabet: DefaultNanoidAlphabet,
-		NanoidSize:     DefaultNanoidSize,
-		UUIDNode:       generatedNode,
+		Alphabet: DefaultAlphabet,
+		Size:     DefaultSize,
 	}
-
 	for _, o := range opts {
 		o(&options)
 	}
-
 	return options
 }
--- a/util/id/id_test.go
+++ b/util/id/id_test.go
@@ -1,20 +0,0 @@
-package id
-
-import "testing"
-
-func TestUUIDv8(t *testing.T) {
-	id, err := New()
-	if err != nil {
-		t.Fatal(err)
-	}
-	_ = id
-}
-
-func TestToUUID(t *testing.T) {
-	id, err := New()
-	if err != nil {
-		t.Fatal(err)
-	}
-	u := ToUUID(id)
-	_ = u
-}
--- a/util/register/util.go
+++ b/util/register/util.go
@@ -71,6 +71,14 @@ func CopyService(service *register.Service) *register.Service {
 	}
 	s.Nodes = nodes

+	// copy endpoints
+	eps := make([]*register.Endpoint, len(service.Endpoints))
+	for j, ep := range service.Endpoints {
+		e := &register.Endpoint{}
+		*e = *ep
+		eps[j] = e
+	}
+	s.Endpoints = eps
 	return s
 }

--- a/util/ring/buffer.go
+++ b/util/ring/buffer.go
@@ -113,7 +113,7 @@ func (b *Buffer) Stream() (<-chan *Entry, chan bool) {
 	defer b.Unlock()

 	entries := make(chan *Entry, 128)
-	id := id.MustNew()
+	id := id.Must()
 	stop := make(chan bool)

 	b.streams[id] = &Stream{
--- a/util/sort/sort.go
+++ b/util/sort/sort.go
@@ -1,6 +1,7 @@
 package sort

 import (
+	"fmt"
 	"sort"
 )

@@ -8,7 +9,7 @@ import (
 type byKey []interface{}

 func (k byKey) Len() int           { return len(k) / 2 }
-func (k byKey) Less(i, j int) bool { return k[i*2].(string) < k[j*2].(string) }
+func (k byKey) Less(i, j int) bool { return fmt.Sprintf("%s", k[i*2]) < fmt.Sprintf("%s", k[j*2]) }
 func (k byKey) Swap(i, j int) {
 	k[i*2], k[j*2] = k[j*2], k[i*2]
 	k[i*2+1], k[j*2+1] = k[j*2+1], k[i*2+1]
--- a/util/time/duration_test.go
+++ b/util/time/duration_test.go
@@ -35,11 +35,11 @@ func TestUnmarshalYAML(t *testing.T) {
 		t.Fatalf("invalid duration %v != 10000000", v.TTL)
 	}

-	err = yaml.Unmarshal([]byte(`{"ttl":"1d"}`), v)
+	err = yaml.Unmarshal([]byte(`{"ttl":"1y"}`), v)
 	if err != nil {
 		t.Fatal(err)
-	} else if *(v.TTL) != 86400000000000 {
-		t.Fatalf("invalid duration %v != 86400000000000", *v.TTL)
+	} else if *(v.TTL) != 31622400000000000 {
+		t.Fatalf("invalid duration %v != 31622400000000000", v.TTL)
 	}
 }

@@ -68,11 +68,11 @@ func TestUnmarshalJSON(t *testing.T) {
 		t.Fatalf("invalid duration %v != 10000000", v.TTL)
 	}

-	err = json.Unmarshal([]byte(`{"ttl":"1d"}`), v)
+	err = json.Unmarshal([]byte(`{"ttl":"1y"}`), v)
 	if err != nil {
 		t.Fatal(err)
-	} else if v.TTL != 86400000000000 {
-		t.Fatalf("invalid duration %v != 86400000000000", v.TTL)
+	} else if v.TTL != 31622400000000000 {
+		t.Fatalf("invalid duration %v != 31622400000000000", v.TTL)
 	}
 }

@@ -87,11 +87,11 @@ func TestParseDuration(t *testing.T) {
 	if td.String() != "340h0m0s" {
 		t.Fatalf("ParseDuration 14d != 340h0m0s : %s", td.String())
 	}
-	td, err = ParseDuration("1d")
+	td, err = ParseDuration("1y")
 	if err != nil {
 		t.Fatalf("ParseDuration error: %v", err)
 	}
-	if td.String() != "24h0m0s" {
-		t.Fatalf("ParseDuration 1d != 24h0m0s : %s", td.String())
+	if td.String() != "8784h0m0s" {
+		t.Fatalf("ParseDuration 1y != 8784h0m0s : %s", td.String())
 	}
 }