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	2

Benchmark Case

• Online: 500,000(250,000 per server)
• Duration: 15min
• Push Speed: 50/s (broadcast room)
• Push Message: {"test":1}
• Received calc mode: 30s per times, total 30 times

Benchmark Resource

• CPU: 1400%~2340%
• Memory: 4.22GB
• GC Pause: 77ms
• Network: Incoming(302MBit/s), Outgoing(3.19GBit/s)

Benchmark Result

• Received: 24,400,000/s, 12,200,000/s per server.

中文

English

LICENSE

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