Wednesday, June 24, 2009

Proxy and Caching Servers:

Proxy and Caching Servers:
Proxy servers act as an intermediary link between the client and the server.
Their purpose is to hide the server from the client without disturbing the communication link between the two.
When a client sends a request for a Web page, the request is routed to the proxy server. It first looks for the Web page in its memory.
If the Web page exists, it sends back that page to the client.
If the requested page does not exist in the cache server’s memory, it fetches the requested page from the server that is hosting it on the Internet and then maintains a copy of that Web page.
All successive requests for this page or file is fetched from the cache of the server.

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