Ecosyste.ms: Awesome

An open API service indexing awesome lists of open source software.

https://github.com/go-micro/go-micro

A Go microservices framework
https://github.com/go-micro/go-micro

distributed-systems go golang micro microservices rpc

Last synced: about 2 months ago
JSON representation

A Go microservices framework

Lists

README 

        
# 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/go-micro.dev/v4?tab=doc) [![Go Report Card](https://goreportcard.com/badge/github.com/go-micro/go-micro)](https://goreportcard.com/report/github.com/go-micro/go-micro)



Go Micro is a framework for distributed systems development.



**Note**: V5 will be a fork known as [**Orb**](https://github.com/go-orb/go-orb)



## Overview



Go Micro provides the core requirements for distributed systems development including RPC and Event driven communication.

The Go Micro philosophy is sane defaults with a pluggable architecture. We provide defaults to get you started quickly

but everything can be easily swapped out.



## Features



Go 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, 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

  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. The default discovery mechanism is

  multicast DNS (mdns), a zeroconf system.



- **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. This includes protobuf and json by default.



- **RPC Client/Server** - 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.



- **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 system is a HTTP event message broker.



- **Event Streaming** - PubSub is great for async notifications but for more advanced use cases event streaming is preferred. Offering

  persistent storage, consuming from offsets and acking. Go Micro includes support for NATS Jetstream and Redis streams.



- **Synchronization** - Distributed systems are often built in an eventually consistent manner. Support for distributed locking and

  leadership are built in as a Sync interface. When using an eventually consistent database or scheduling use the Sync interface.



- **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.



## Getting Started



To make use of Go Micro import it 



```golang

import "go-micro.dev/v4"

```



Define a handler (protobuf is optionally supported - see [example](https://github.com/go-micro/examples/blob/main/helloworld/main.go)) 



```golang

type Request struct {

        Name string `json:"name"`

}



type Response struct {

        Message string `json:"message"`

}



type Helloworld struct{}



func (h *Helloworld) Greeting(ctx context.Context, req *Request, rsp *Response) error {

        rsp.Message = "Hello " + req.Name

        return nil

}

```



Create, initialise and run the service



```golang

// create a new service

service := micro.NewService(

    micro.Name("helloworld"),

    micro.Handle(new(Helloworld)),

)



// initialise flags

service.Init()



// start the service

service.Run()

```



Optionally set fixed address



```golang

service := micro.NewService(

    // set address

    micro.Address(":8080"),

)

```



Call it via curl



```

curl -XPOST \

     -H 'Content-Type: application/json' \

     -H 'Micro-Endpoint: Helloworld.Greeting' \

     -d '{"name": "alice"}' \

      http://localhost:8080

```



See the [examples](https://github.com/go-micro/examples) for detailed information on usage.



## Toolkit



See [github.com/go-micro](https://github.com/go-micro) for tooling.



- [API](https://github.com/go-micro/api)

- [CLI](https://github.com/go-micro/cli)

- [Demo](https://github.com/go-micro/demo)

- [Plugins](https://github.com/go-micro/plugins)

- [Examples](https://github.com/go-micro/examples)

- [Dashboard](https://github.com/go-micro/dashboard)

- [Generator](https://github.com/go-micro/generator)



## Changelog



See [CHANGELOG.md](https://github.com/micro/go-micro/tree/master/CHANGELOG.md) for release history.



## License



Go Micro is Apache 2.0 licensed.