goim

goim is a im server writen by golang.

Features

• 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

Architecture

Protocol:

proto

Document

English

中文

Examples

Websocket: Websocket Client Demo

Android: Android

iOS: iOS

Benchmark

Benchmark Server

CPU	Memory	Instance
Intel(R) Xeon(R) CPU E5-2630 v2 @ 2.60GHz	DDR3 32GB	5

Benchmark Case

• Online: 500,000
• Duration: 10min
• Push Speed: 20/s (broadcast room)
• Push Message: {"test":1}

Benchmark Resource

• CPU: 2340% (almost all busy)
• Memory: 2.65GB
• GC Pause: 41ms
• Network: Incoming(500MBit/s), Outgoing(780MBit/s)

Benchmark Result

5.6 million/second message received with 5 24c server, 1.2 million/second per server.

中文

English

LICENSE

goim is is distributed under the terms of the GNU General Public License, version 3.0 GPLv3