github.com/micro/go-micro/v2@v2.9.1/README.md (about) 1 # Go Micro [](https://opensource.org/licenses/Apache-2.0) [](https://pkg.go.dev/github.com/micro/go-micro?tab=doc) [](https://travis-ci.org/micro/go-micro) [](https://goreportcard.com/report/github.com/micro/go-micro) 2 3 Go Micro is a framework for distributed systems development. 4 5 ## Overview 6 7 Go Micro provides the core requirements for distributed systems development including RPC and Event driven communication. 8 The **Micro** philosophy is sane defaults with a pluggable architecture. We provide defaults to get you started quickly 9 but everything can be easily swapped out. 10 11 ## Features 12 13 Go Micro abstracts away the details of distributed systems. Here are the main features. 14 15 - **Authentication** - Auth is built in as a first class citizen. Authentication and authorization enable secure 16 zero trust networking by providing every service an identity and certificates. This additionally includes rule 17 based access control. 18 19 - **Dynamic Config** - Load and hot reload dynamic config from anywhere. The config interface provides a way to load application 20 level config from any source such as env vars, file, etcd. You can merge the sources and even define fallbacks. 21 22 - **Data Storage** - A simple data store interface to read, write and delete records. It includes support for memory, file and 23 CockroachDB by default. State and persistence becomes a core requirement beyond prototyping and Micro looks to build that into the framework. 24 25 - **Service Discovery** - Automatic service registration and name resolution. Service discovery is at the core of micro service 26 development. When service A needs to speak to service B it needs the location of that service. The default discovery mechanism is 27 multicast DNS (mdns), a zeroconf system. 28 29 - **Load Balancing** - Client side load balancing built on service discovery. Once we have the addresses of any number of instances 30 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 31 across the services and retry a different node if there's a problem. 32 33 - **Message Encoding** - Dynamic message encoding based on content-type. The client and server will use codecs along with content-type 34 to seamlessly encode and decode Go types for you. Any variety of messages could be encoded and sent from different clients. The client 35 and server handle this by default. This includes protobuf and json by default. 36 37 - **gRPC Transport** - gRPC 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. 38 39 - **Async Messaging** - PubSub is built in as a first class citizen for asynchronous communication and event driven architectures. 40 Event notifications are a core pattern in micro service development. The default messaging system is a HTTP event message broker. 41 42 - **Synchronization** - Distributed systems are often built in an eventually consistent manner. Support for distributed locking and 43 leadership are built in as a Sync interface. When using an eventually consistent database or scheduling use the Sync interface. 44 45 - **Pluggable Interfaces** - Go Micro makes use of Go interfaces for each distributed system abstraction. Because of this these interfaces 46 are pluggable and allows Go Micro to be runtime agnostic. You can plugin any underlying technology. Find plugins in 47 [github.com/micro/go-plugins](https://github.com/micro/go-plugins). 48 49 ## Getting Started 50 51 To make use of Go Micro 52 53 ```golang 54 import "github.com/micro/go-micro/v2" 55 56 // create a new service 57 service := micro.NewService( 58 micro.Name("helloworld"), 59 ) 60 61 // initialise flags 62 service.Init() 63 64 // start the service 65 service.Run() 66 ``` 67 68 See the [docs](https://dev.m3o.com) for detailed information on the architecture, installation and use of go-micro. 69 70 ## License 71 72 Go Micro is Apache 2.0 licensed. 73