apache 开启Gzip网页压缩
网页gzip压缩是个什么概念呢?如果你还没接触到,讲文字全是废话,先来看两张图看着实在;
网页压缩前:
网页压缩后:
从图中就可看出网页压缩后这加载时间是成倍的缩减,下面就是就是要讲解如何开启gzip压缩;
实例环境:
服务器:centos6.5
apche:2.2.15
gzip压缩需要 deflate_module和headers_module的支持;系统默认就是开启的;需要做的是在httpd.conf配置项添加规则;
# vim /etc/httpd/conf/httpd.conf#修改配置项
#在最后边添加如下内容
AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE text/css
AddOutputFilterByType DEFLATE application/xml
AddOutputFilterByType DEFLATE application/rss+xml
AddOutputFilterByType DEFLATE application/atom_xml
AddOutputFilterByType DEFLATE application/x-javascript
AddOutputFilterByType DEFLATE application/x-httpd-php
AddOutputFilterByType DEFLATE text/html
# service httpd restart #重启apache ok就这么简单即可;然后通过火狐控制台的网络查看是否有Content-Encoding:gzip 这条
或者通过站长工具来查看:http://tool.chinaz.com/Gzips/
什么?你说你用的是虚拟空间;不能修改httpd.conf ?好吧,使用.htaccess总可以吧,好人做到底;在项目根目录下建一个.htaccess文件
里面添加如下内容:
# Insert filters
AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE text/html
AddOutputFilterByType DEFLATE text/xml
AddOutputFilterByType DEFLATE text/css
AddOutputFilterByType DEFLATE application/xml
AddOutputFilterByType DEFLATE application/xhtml+xml
AddOutputFilterByType DEFLATE application/rss+xml
AddOutputFilterByType DEFLATE application/javascript
AddOutputFilterByType DEFLATE application/x-javascript
AddOutputFilterByType DEFLATE application/x-httpd-php
AddOutputFilterByType DEFLATE application/x-httpd-fastphp
AddOutputFilterByType DEFLATE image/svg+xml
# Drop problematic browsers
BrowserMatch ^Mozilla/4 gzip-only-text/html
BrowserMatch ^Mozilla/4.0 no-gzip
BrowserMatch bMSI !no-gzip !gzip-only-text/html
# Make sure proxies don't deliver the wrong content
Header append Vary User-Agent env=!dont-vary
如果是自己的服务器还想使用.htaccess;那需要在httpd.conf 里面开启.htaccess;
修改httpd.conf的302行左右 AllowOverride None 改为 AllowOverride All:
Options FollowSymLinks
AllowOverride All
还有大约340左右的AllowOverride None 改为 AllowOverride All:
AllowOverride All: 但是如果是自己的服务器,尽量修改http.conf,而不是使用.htaccess。因为开启.htaccess后apache每次都要检测.htaccess文件会稍微降低httpd服务器的性能;
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