HTTP权威指南 读书笔记-server

web server responsiblity: manager resource, handle with tcp connection,  itself administration

 1. The request / response workflow:

An screenshot from  firebug which measure the detail performance.

 2.  Proxy

    Adding more than lay between client and server, it can do more things: filter, secuty, performance, cache.

     Notes： trace can access this kind of proxies。

 

 3. Cache

    CDN http://en.wikipedia.org/wiki/Content_delivery_network

    It need to sync, freshness check, and validation.    

 

   4. Integration Points: Gateways, Tunnels, and Relays

   Gateways:   webserver can communication with application with low performance.

   Tunnels:  You can send non-HTTP traffic through HTTP connections, allowing other protocols to piggyback on top of HTTP