2020-05-17 14:39:20 +03:00
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# Go Micro [![License](https://img.shields.io/:license-apache-blue.svg)](https://opensource.org/licenses/Apache-2.0) [![Go.Dev reference](https://img.shields.io/badge/go.dev-reference-007d9c?logo=go&logoColor=white&style=flat-square)](https://pkg.go.dev/github.com/micro/go-micro?tab=doc) [![Travis CI](https://api.travis-ci.org/micro/go-micro.svg?branch=master)](https://travis-ci.org/micro/go-micro) [![Go Report Card](https://goreportcard.com/badge/micro/go-micro)](https://goreportcard.com/report/github.com/micro/go-micro) <a href="https://slack.micro.mu"><img src="https://img.shields.io/badge/join-us%20on%20slack-gray.svg?longCache=true&logo=slack&colorB=brightgreen" alt="Slack Widget"></a>
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2015-01-14 02:31:27 +03:00
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2020-04-14 00:15:21 +03:00
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Go Micro is a framework for distributed systems development.
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2016-06-20 04:52:38 +03:00
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2018-11-27 22:43:57 +03:00
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## Overview
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Go Micro provides the core requirements for distributed systems development including RPC and Event driven communication.
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2020-05-23 18:46:50 +03:00
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The **Micro** philosophy is sane defaults with a pluggable architecture. We provide defaults to get you started quickly
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2018-11-27 22:43:57 +03:00
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but everything can be easily swapped out.
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2016-12-07 19:54:19 +03:00
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## Features
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2016-07-03 04:49:13 +03:00
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2017-06-15 21:57:27 +03:00
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Go Micro abstracts away the details of distributed systems. Here are the main features.
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2016-07-03 04:49:13 +03:00
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2020-05-31 13:26:46 +03:00
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- **Authentication** - Auth is built in as a first class citizen. Authentication and authorization enable secure
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zero trust networking by providing every service an identity and certificates. This additionally includes rule
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based access control.
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- **Dynamic Config** - Load and hot reload dynamic config from anywhere. The config interface provides a way to load application
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level config from any source such as env vars, file, etcd. You can merge the sources and even define fallbacks.
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- **Data Storage** - A simple data store interface to read, write and delete records. It includes support for memory, file and
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CockroachDB by default. State and persistence becomes a core requirement beyond prototyping and Micro looks to build that into the framework.
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2018-12-02 16:23:46 +03:00
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- **Service Discovery** - Automatic service registration and name resolution. Service discovery is at the core of micro service
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2019-01-16 16:12:21 +03:00
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development. When service A needs to speak to service B it needs the location of that service. The default discovery mechanism is
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2019-11-07 01:04:02 +03:00
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multicast DNS (mdns), a zeroconf system.
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2018-12-02 16:23:46 +03:00
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- **Load Balancing** - Client side load balancing built on service discovery. Once we have the addresses of any number of instances
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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
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across the services and retry a different node if there's a problem.
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- **Message Encoding** - Dynamic message encoding based on content-type. The client and server will use codecs along with content-type
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to seamlessly encode and decode Go types for you. Any variety of messages could be encoded and sent from different clients. The client
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2018-12-26 15:03:08 +03:00
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and server handle this by default. This includes protobuf and json by default.
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2018-12-02 16:23:46 +03:00
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2019-02-09 15:25:34 +03:00
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- **Request/Response** - RPC based request/response with support for bidirectional streaming. We provide an abstraction for synchronous
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2018-12-02 16:23:46 +03:00
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communication. A request made to a service will be automatically resolved, load balanced, dialled and streamed. The default
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2020-01-19 16:51:31 +03:00
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transport is [gRPC](https://grpc.io/).
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2018-12-02 16:23:46 +03:00
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- **Async Messaging** - PubSub is built in as a first class citizen for asynchronous communication and event driven architectures.
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2020-04-11 20:23:37 +03:00
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Event notifications are a core pattern in micro service development. The default messaging system is a HTTP event message broker.
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2018-11-27 22:43:57 +03:00
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2020-05-31 13:21:55 +03:00
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- **Synchronization** - Distributed systems are often built in an eventually consistent manner. Support for distributed locking and
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leadership are built in as a Sync interface. When using an eventually consistent database or scheduling use the Sync interface.
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2018-12-02 16:26:38 +03:00
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- **Pluggable Interfaces** - Go Micro makes use of Go interfaces for each distributed system abstraction. Because of this these interfaces
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are pluggable and allows Go Micro to be runtime agnostic. You can plugin any underlying technology. Find plugins in
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[github.com/micro/go-plugins](https://github.com/micro/go-plugins).
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2018-11-14 18:18:13 +03:00
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## Getting Started
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2017-02-10 15:36:42 +03:00
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2020-04-19 02:44:52 +03:00
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To make use of Go Micro
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2020-04-19 02:45:29 +03:00
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```golang
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import "github.com/micro/go-micro/v2"
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2020-05-31 13:28:32 +03:00
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// create a new service
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service := micro.NewService(
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micro.Name("helloworld"),
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)
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2020-05-31 13:28:32 +03:00
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// initialise flags
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service.Init()
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2020-05-31 13:28:32 +03:00
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// start the service
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service.Run()
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```
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2020-05-30 12:59:59 +03:00
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See the [docs](https://dev.micro.mu) for detailed information on the architecture, installation and use of go-micro.
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2020-04-19 02:46:33 +03:00
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## License
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2020-04-28 21:35:13 +03:00
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Go Micro is Apache 2.0 licensed.
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2020-04-19 02:46:33 +03:00
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