Nginx 开启gzip压缩(图片,文件,css)
1、Vim打开Nginx配置文件
<pre class=\"brush:bash;toolbar:false\">vim /usr/local/nginx/conf/nginx.conf</pre>2、找到如下一段，进行修改
<pre class=\"brush:bash;toolbar:false\">gzip on; gzip_min_length 1k; gzip_buffers 4 16k; #gzip_http_version 1.0; gzip_comp_level 2; gzip_types text/plain application/x-css application/xml text/javascript application/x-httpd-php image/jpeg image/gif image/png; gzip_vary off; gzip_disable "MSIE [1-6]\\.";</pre>3、解释一下
第1行：开启Gzip
第2行：不压缩临界值，大于1K的才压缩，一般不用改
第3行：buffer，就是，嗯，算了不解释了，不用改
第4行：用了反向代理的话，末端通信是HTTP/1.0，有需求的应该也不用看我这科普文了；有这句的话注释了就行了，默认是HTTP/1.1
第5行：压缩级别，1-10，数字越大压缩的越好，时间也越长，看心情随便改吧
第6行：进行压缩的文件类型，缺啥补啥就行了，JavaScript有两种写法，最好都写上吧，总有人抱怨js文件没有压缩，其实多写一种格式就行了
第7行：跟Squid等缓存服务有关，on的话会在Header里增加"Vary: Accept-Encoding"，我不需要这玩意，自己对照情况看着办吧
第8行：IE6对Gzip不怎么友好，不给它Gzip了
4、:wq保存退出，重新加载Nginx
<pre class=\"brush:bash;toolbar:false\">/usr/local/nginx/sbin/nginx -s reload</pre>5、用curl测试Gzip是否成功开启
<pre class=\"brush:bash;toolbar:false\">curl -I -H "Accept-Encoding: gzip, deflate" "http://www.jiaochengji.com/" HTTP/1.1 200 OK Server: nginx/1.0.15 Date: Sun, 26 Aug 2012 18:13:09 GMT Content-Type: text/html; charset=UTF-8 Connection: keep-alive X-Powered-By: PHP/5.2.17p1 X-Pingback: http://www.slyar.com/blog/xmlrpc.php Content-Encoding: gzip</pre>页面成功压缩
<pre class=\"brush:bash;toolbar:false\">curl -I -H "Accept-Encoding: gzip, deflate" "http://www.yejquerycn.cnhemes/default/statics/css/lib.css" HTTP/1.1 200 OK Server: nginx/1.0.15 Date: Sun, 26 Aug 2012 18:21:25 GMT Content-Type: text/css Last-Modified: Sun, 26 Aug 2012 15:17:07 GMT Connection: keep-alive Expires: Mon, 27 Aug 2012 06:21:25 GMT Cache-Control: max-age=43200 Content-Encoding: gzip</pre>css文件成功压缩
<pre class=\"brush:bash;toolbar:false\">curl -I -H "Accept-Encoding: gzip, deflate" http://www.jiaochengji.com /Themes/default/statics/js/jquery.min.js" HTTP/1.1 200 OK Server: nginx/1.0.15 Date: Sun, 26 Aug 2012 18:21:38 GMT Content-Type: application/x-javascript Last-Modified: Thu, 12 Jul 2012 17:42:45 GMT Connection: keep-alive Expires: Mon, 27 Aug 2012 06:21:38 GMT Cache-Control: max-age=43200 Content-Encoding: gzip</pre>js文件成功压缩
<pre class=\"brush:bash;toolbar:false\">curl -I -H "Accept-Encoding: gzip, deflate" "http://www.slyar.com/blog/wp-content/uploads/2012/08/2012-08-23_203542.png" HTTP/1.1 200 OK Server: nginx/1.0.15 Date: Sun, 26 Aug 2012 18:22:45 GMT Content-Type: image/png Last-Modified: Thu, 23 Aug 2012 13:50:53 GMT Connection: keep-alive Expires: Tue, 25 Sep 2012 18:22:45 GMT Cache-Control: max-age=2592000 Content-Encoding: gzip</pre>图片成功压缩
<pre class=\"brush:bash;toolbar:false\">curl -I -H "Accept-Encoding: gzip, deflate" "http://www.slyar.com/blog/wp-content/plugins/wp-multicollinks/wp-multicollinks.css" HTTP/1.1 200 OK Server: nginx/1.0.15 Date: Sun, 26 Aug 2012 18:23:27 GMT Content-Type: text/css Content-Length: 180 Last-Modified: Sat, 02 May 2009 08:46:15 GMT Connection: keep-alive Expires: Mon, 27 Aug 2012 06:23:27 GMT Cache-Control: max-age=43200 Accept-Ranges: bytes</pre>最后来个不到1K的文件，由于我的阈值是1K，所以没压缩
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