HTTP compression
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HTTP compression is a capability built into both web servers and web browsers, to make better use of available bandwidth. HTTP protocol data is compressed before it is sent from the server: compliant browsers will announce what methods are supported to the server before downloading the correct format; unsupported browsers will download uncompressed data. Data is usually compressed with either deflate or gzip modules specific to the server software.
Servers that support HTTP compression
- Microsoft IIS: built-in or using 3rd-party module
- Apache HTTP Server, via mod_deflate or mod_gzip
- Caucho Resin Professional, via GzipFilter
- Sun Java System Web Server
- Zeus Web Server
- Lighttpd, via mod_compress[1]
- Nginx - built-in
- RaidenHTTPD - built-in
- Serenity Server - built-in.
External links
- RFC 2616
- Apache: mod_deflate & mod_gzip
- Compression with lighttpd
- Apache and IIS compression examples
- 15 Seconds: Web Site Compression
- HTTP Compression: resource page by the founder of VIGOS AG, Constantin Rack
- Using HTTP Compression by Martin Brown of Server Watch
- Using HTTP Compression in IIS 6.0: Microsoft page
- Enabling HTTP Compression in IIS 6.0: detailed article from Donnie Mack of DotNetJunkies
Notes
- ↑ Lighttpd's mod_compress only supports compressing static files, that is, no content dynamically generated from a cgi/fcgi/other program. mod_deflate is a modified version of mod_compress which supports dynamic content compression but it's planned for Lighttpd 1.5.0 which is still under development.
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