Difference between revisions of "Web cache"
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A web cache system can refer either to an [[appliance]], or to a [[computer program]]. | A web cache system can refer either to an [[appliance]], or to a [[computer program]]. | ||
| + | |||
| + | == HTTP ETag == | ||
| + | |||
| + | The [[HTTP ETag]] is one of several mechanisms that HTTP provides for web cache validation. | ||
| + | |||
| + | HTTP ETag allows a client to make conditional requests. | ||
== See also == | == See also == | ||
| − | * [[]] | + | * [[Bandwidth (computing)]] |
| + | * [[HTML]] | ||
| + | * [[HTTP ETag]] | ||
| + | * [[Web document]] | ||
| + | * [[Web image]] | ||
| + | * [[Web server]] | ||
== External links == | == External links == | ||
| − | * [] @ Wikipedia | + | * [https://en.wikipedia.org/wiki/Web_cache Web cache] @ Wikipedia |
Revision as of 08:24, 17 February 2016
A web cache (or HTTP cache) is an information technology for the temporary storage (caching) of web documents, such as HTML pages and web images.
Description
Web caches are used to reduce:
- Bandwidth usage
- Server load
- Perceived lag
A web cache system stores copies of documents passing through it; subsequent requests may be satisfied from the cache if certain conditions are met.
A web cache system can refer either to an appliance, or to a computer program.
HTTP ETag
The HTTP ETag is one of several mechanisms that HTTP provides for web cache validation.
HTTP ETag allows a client to make conditional requests.
See also
External links
- Web cache @ Wikipedia
