node.js - 移动端通知推送的实现原理？

Answer 1

SSE server-side push technology

Answer 2

Why is long connection inappropriate?
As long as the design is reasonable, the cost of maintaining a single connection is very low. In addition, the server is built through a cluster, so speed and stability can be guaranteed.

Answer 3

1. Long-term rotation training, pay attention to the amount of concurrency
2. Rotation training, which consumes high resources and affects server performance
3. Use non-Tcp WebSocket protocol

Answer 4

http://www.cnblogs.com/imstud...