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| Web Caching |
Web Caching
The purpose of caching is to reduce latency and network traffic. Caching has been used for local storage since nearly the dawn of computers. Recently accessed information is stored in a cache buffer in case the user needs to access it again. If so, the data is pulled from the cache rather that the slower hard drive. Thus, latency s reduced. On the web, latency and traffic are reduced if previously accessed information can be obtained from a local or nearby cache serve rather than from the Web serve that originated the requested information (called the “origin” server). The information may be stored on the user’s local computer, a special caching server within the enterprise, or a caching server geographically closer to the enterprise, usually at a nearby Internet Service Provider. The caching hierarchy is outline below: .
- Local Web Browser Caching
- Proxy Server Caching
- Reverse Proxy Cache
- Distributed Content Servers
more detailes, please visit:
http:///www.linktionary.com/w/webcaching.html
