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配置Apache2启用deflate压缩加快传输

2008-08-19 13:02:38| 分类： apache | 标签： |举报 |字号大中小订阅

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下载了Yahoo的给Firefox开发的YSlow插件，这个插件确实不错，能够给出不少优化建议，发现所在主机没有开启deflate压缩。
首先加载mod_deflate。
在httpd.conf中加入

# Insert filter
SetOutputFilter DEFLATE

# Netscape 4.x has some problems...
BrowserMatch ^Mozilla/4 gzip-only-text/html

# Netscape 4.06-4.08 have some more problems
BrowserMatch ^Mozilla/4\.0[678] no-gzip

# MSIE masquerades as Netscape, but it is fine
# BrowserMatch \bMSIE !no-gzip !gzip-only-text/html

# NOTE: Due to a bug in mod_setenvif up to Apache 2.0.48
# the above regex won't work. You can use the following
# workaround to get the desired effect:
BrowserMatch \bMSI[E] !no-gzip !gzip-only-text/html

# Don't compress images
SetEnvIfNoCase Request_URI .(?:gif|jpe?g|png|exe|bmp|mp3|rar|zip|swf|cab|t?gz|bz2|sit)$ no-gzip dont-vary
SetEnvIfNoCase Request_URI \.pdf$ no-gzip dont-vary

# Make sure proxies don't deliver the wrong content
Header append Vary User-Agent env=!dont-vary

</Location>

再重启apache即可，/etc/init.d/apache2 restart
经过port80software的在线检测，首页大小从91977 bytes压缩到13376 bytes，传输速度提高6.8X，传输速度从原来12.832 s缩减到1.866 s。
如果修改配置之后提示“Invalid command 'Header', perhaps mis-spelled or defined by a module not included in the server configuration”，则加载Header模块即可，不过最好还是在编译apache模块时直接加上--enable-deflate --enable-headers就省事多了。

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