[[Linuxめも]]

Apacheでコンテンツをgzip圧縮すると、ネットワークで送信されるバイト数を減らすことができ、結果サーバーの応答時間を短縮することができるようになります。

gzip圧縮のためにCPUリソースが使用されますので、CPU負荷が高い場合は逆効果になる恐れもあるので注意が必要です。

Apache2.2系

 LoadModule deflate_module modules/mod_deflate.so
 LoadModule filter_module modules/mod_filter.so
 
 <Location />
     BrowserMatch ^Mozilla/4 gzip-only-text/html
     BrowserMatch ^Mozilla/4.0[678] no-gzip
     BrowserMatch bMSIE !no-gzip !gzip-only-text/html
 
     FilterDeclare Compression CONTENT_SET
     FilterProvider Compression DEFLATE Content-Type $text/plain
     FilterProvider Compression DEFLATE Content-Type $text/html
     FilterProvider Compression DEFLATE Content-Type $text/css
     FilterProvider Compression DEFLATE Content-Type $text/javascript
     FilterProvider Compression DEFLATE Content-Type $application/javascript
     FilterProvider Compression DEFLATE Content-Type $application/xhtml
     FilterProvider Compression DEFLATE Content-Type $application/xml
     FilterProvider Compression DEFLATE Content-Type $application/xhtml+xml
     FilterProvider Compression DEFLATE Content-Type $application/rss+xml
     FilterProvider Compression DEFLATE Content-Type $application/atom+xml
     FilterProvider Compression DEFLATE Content-Type $application/x-javascript
     FilterProvider Compression DEFLATE Content-Type $image/svg+xml
     FilterChain Compression
 
     SetEnvIfNoCase Request_URI .(?:gif|jpe?g|png|zip|lzh|exe)$ dont-vary
 
     Header append Vary User-Agent env=!dont-vary
     Header append Vary Accept-Encoding env=!dont-vary
 </Location>

Apache2.4系

 LoadModule deflate_module modules/mod_deflate.so
 LoadModule filter_module modules/mod_filter.so
 
 <Location />
     BrowserMatch ^Mozilla/4 gzip-only-text/html
     BrowserMatch ^Mozilla/4.0[678] no-gzip
     BrowserMatch bMSIE !no-gzip !gzip-only-text/html
 
     FilterDeclare Compression CONTENT_SET
     FilterProvider Compression DEFLATE "%{CONTENT_TYPE}='text/plain'"
     FilterProvider Compression DEFLATE "%{CONTENT_TYPE}='text/html'"
     FilterProvider Compression DEFLATE "%{CONTENT_TYPE}=~m#^text\/html#"
     FilterProvider Compression DEFLATE "%{CONTENT_TYPE}='text/css'"
     FilterProvider Compression DEFLATE "%{CONTENT_TYPE}='text/javascript'"
     FilterProvider Compression DEFLATE "%{CONTENT_TYPE}='application/javascript'"
     FilterProvider Compression DEFLATE "%{CONTENT_TYPE}='application/xhtml'"
     FilterProvider Compression DEFLATE "%{CONTENT_TYPE}='application/xml'"
     FilterProvider Compression DEFLATE "%{CONTENT_TYPE}='application/xhtml+xml'"
     FilterProvider Compression DEFLATE "%{CONTENT_TYPE}='application/rss+xml'"
     FilterProvider Compression DEFLATE "%{CONTENT_TYPE}='application/atom+xml'"
     FilterProvider Compression DEFLATE "%{CONTENT_TYPE}='application/x-javascript'"
     FilterProvider Compression DEFLATE "%{CONTENT_TYPE}='image/svg+xml'"
     FilterChain Compression
 
     SetEnvIfNoCase Request_URI .(?:gif|jpe?g|png|zip|lzh|exe)$ dont-vary
 
     Header append Vary User-Agent env=!dont-vary
     Header append Vary Accept-Encoding env=!dont-vary
 </Location>

こちらの記事も参考にして下さい。~
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