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:
Websocket: Websocket Client Demo
Android: Android
iOS: iOS
| CPU | Memory | Instance |
|---|---|---|
| Intel(R) Xeon(R) CPU E5-2630 v2 @ 2.60GHz | DDR3 32GB | 2 |
- 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
- CPU: 1400%~2340%
- Memory: 4.22GB
- GC Pause: 77ms
- Network: Incoming(302MBit/s), Outgoing(3.19GBit/s)
- Received: 24,400,000/s, 12,200,000/s per server.
goim is is distributed under the terms of the GNU General Public License, version 3.0 GPLv3