Programming language: Go
License: MIT License
Tags: Game Development    
Latest version: v0.5.0

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Nano Build Status GoDoc Go Report Card [MIT licensed][8]

Nano is an easy to use, fast, lightweight game server networking library for Go. It provides a core network architecture and a series of tools and libraries that can help developers eliminate boring duplicate work for common underlying logic. The goal of nano is to improve development efficiency by eliminating the need to spend time on repetitious network related programming.

Nano was designed for server-side applications like real-time games, social games, mobile games, etc of all sizes.

How to build a system with Nano

What does a Nano application look like?

The simplest "nano" application as shown in the following figure, you can make powerful applications by combining different components.


In fact, the nano application is a collection of  [Component ](./docs/get_started.md#component) , and a component is a bundle of  [Handler](./docs/get_started.md#handler), once you register a component to nano, nano will register all methods that can be converted to Handler to nano service container. Service was accessed by Component.Handler, and the handler will be called while client request. The handler will receive two parameters while handling a message:

  • *session.Session: corresponding a client that apply this request or notify.
  • *protocol.FooBar: the payload of the request.

While you had processed your logic, you can response or push message to the client by session.Response(payload) and session.Push('eventName', payload), or returns error when some unexpected data received.

How to build distributed system with Nano

Nano contains built-in distributed system solution, and make you creating a distributed game server easily.

See: The distributed chat demo

The Nano will remain simple, but you can perform any operations in the component and get the desired goals. You can startup a group of Nano application as agent to dispatch message to backend servers.

How to execute the asynchronous task

func (manager *PlayerManager) Login(s *session.Session, msg *ReqPlayerLogin) error {
    var onDBResult = func(player *Player) {
        manager.players = append(manager.players, player)
        s.Push("PlayerSystem.LoginSuccess", &ResPlayerLogin)

    // run slow task in new gorontine
    go func() {
        player, err := db.QueryPlayer(msg.PlayerId) // ignore error in demo
        // handle result in main logical gorontine
        nano.Invoke(func(){ onDBResult(player) })
    return nil


  • English

    • [How to build your first nano application](./docs/get_started.md)
    • [Route compression](./docs/route_compression.md)
    • [Communication protocol](./docs/communication_protocol.md)
    • [Design patterns](./docs/design_patterns.md)
    • API Reference(Server)
    • [How to integrate Lua into Nano component(incomplete)](.)
  • 简体中文

    • [如何构建你的第一个nano应用](./docs/get_started_zh_CN.md)
    • [路由压缩](./docs/route_compression_zh_CN.md)
    • [通信协议](./docs/communication_protocol_zh_CN.md)
    • API参考(服务器)
    • [如何将lua脚本集成到nano组件中(未完成)](.)



Successful cases

Go version

> go1.8


go get github.com/lonng/nano

# dependencies
go get -u github.com/pingcap/check
go get -u github.com/pingcap/errors
go get -u github.com/urfave/cli

go get -u google.golang.org/protobuf/proto
go get -u github.com/gorilla/websocket
go get -u google.golang.org/grpc

Protocol Buffers

# protoc
# download form: https://github.com/protocolbuffers/protobuf/releases
# protoc-gen-go
go install google.golang.org/protobuf/cmd/protoc-gen-go@latest
go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest
# delve
go install github.com/go-delve/delve/cmd/dlv@latest


go test -v ./...


# Case:   PingPong
# OS:     Windows 10
# Device: i5-6500 3.2GHz 4 Core/1000-Concurrent   => IOPS 11W(Average)
# Other:  ...

cd ./benchmark/io
go test -v -tags "benchmark"


[MIT License](./LICENSE)

*Note that all licence references and agreements mentioned in the nano README section above are relevant to that project's source code only.