goim

• 曾经稳定的支撑了一个国内语音社交应用两年以上
• 最大同时在线用户约3万，设计容量能支撑10万+
• 本身是一个单播广播系统，适用于实时IM场景的应用
• 分布式架构设计，有横向扩容的能力
• 代码简单，容易修改；项目自包含，没有外部依赖

参见：长连接和广播系统设计文档

BELOW IS THE ORIGINAL PROJECT INFORMATION

goim is a im server writen by golang.

• Light weight
• High performance
• Pure Golang
• Supports single push, multiple push and broadcasting
• Supports one key to multiple subscribers (Configurable maximum subscribers count)
• Supports heartbeats (Application heartbeats, TCP, KeepAlive, HTTP long pulling)
• Supports authentication (Unauthenticated user can't subscribe)
• Supports multiple protocols (WebSocket，TCP，HTTP）
• Scalable architecture (Unlimited dynamic job and logic modules)
• Asynchronous push notification based on Kafka

Protocol:

proto

English

中文

Websocket: Websocket Client Demo

Android: Android

iOS: iOS

• Online: 1,000,000
• Duration: 15min
• Push Speed: 40/s (broadcast room)
• Push Message: {"test":1}
• Received calc mode: 1s per times, total 30 times

• CPU: 2000%~2300%
• Memory: 14GB
• GC Pause: 504ms
• Network: Incoming(450MBit/s), Outgoing(4.39GBit/s)

• Received: 35,900,000/s

中文

English

goim is is distributed under the terms of the MIT License.