92495d22db
This commit adds the following changes: * advert now stores a list of route events as opposed to just last one * attempt to dedup route events before appending them to advert * have max suppress threshold for long time suppressed adverts * decaying events on every advert tick Originally we werent decaying penalties on every advert tick. That was incorrect behaviour. Furthermore some events would end up being accumulated potentially causing memory leaks. We were also overriding the last received router event which was causing incorrect sequence of events to be applied when received by a receiver: Create, Delete would be "squashed" into Delete only which would be nonsensical since the Create event would never be delivered hence we would be deleting nonexistent routes. Not Decaying the events on every tick or not having the max suppression threshold could lead to DoS by growing the router memory infinitely.
Go Micro 
Go Micro is a framework for microservice development.
Overview
Go Micro provides the core requirements for distributed systems development including RPC and Event driven communication. The micro philosophy is sane defaults with a pluggable architecture. We provide defaults to get you started quickly but everything can be easily swapped out.
Plugins are available at github.com/micro/go-plugins.
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Features
Go Micro abstracts away the details of distributed systems. Here are the main features.
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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. The default discovery mechanism is multicast DNS (mdns), a zeroconf system. You can optionally set gossip using the SWIM protocol for p2p networks or consul for a resilient cloud-native setup.
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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.
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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. This includes protobuf and json by default.
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Request/Response - RPC 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. The default transport is http/1.1 or http2 when tls is enabled.
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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. The default messaging is point-to-point http/1.1 or http2 when tls is enabled.
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Pluggable Interfaces - Go Micro makes use of Go interfaces for each distributed system abstraction. Because of this these interfaces are pluggable and allows Go Micro to be runtime agnostic. You can plugin any underlying technology. Find plugins in github.com/micro/go-plugins.
Getting Started
See the docs for detailed information on the architecture, installation and use of go-micro.