Discussion on real-time refresh technology of Web pageshttp://blog.csdn.net/maidou_2011/article/details/8072369
Analysis and Design of WEB-based Alarm Real-time Display System
Reverse Ajax, Part 1: Introduction to Comet
Comet: "Server Push" Technology Based on HTTP Persistent Connection
comet4j development guide http://blog.csdn.net/majian_1987/article/details/8489738
Design and Implementation of Comprehensive Alarm Monitoring Platform
Introduction to HTML5 WebSocket Technology