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在實際運維中，為了提高web頁面的訪問加載速度，一般會把靜態資源（比如js、css、img等）在服務器進行壓縮再傳輸到客戶瀏覽器，主要配置步驟如下：
環境：Centos
1、Vim打開Nginx配置文件
vim /etc/nginx/nginx.conf
2、找到如下一段，進行修改
gzip on; // 開啟Gzip
gzip_min_length 1k; // 不壓縮臨界值，大於1K的才壓縮，一般不用改
gzip_buffers 4 16k; // buffer，就是，嗯，算了不解釋了，不用改
#gzip_http_version 1.0; // 用了反向代理的話，末端通信是HTTP/1.0，有需求的應該也不用看我這科普文了；有這句的話注釋了就行了，默認是HTTP/1.1
gzip_comp_level 2; // 壓縮級別，1-10，數字越大壓縮的越好，時間也越長！
gzip_types text/plain application/x-javascript application/javascript text/javascript text/css application/xml application/x-httpd-php image/jpeg image/gif image/png; // 進行壓縮的文件類型，缺啥補啥就行了，JavaScript有兩種寫法，最好都寫上吧，總有人抱怨js文件沒有壓縮，其實多寫一種格式就行了
gzip_vary off; // 跟Squid等緩存服務有關，on的話會在Header里增加"Vary: Accept-Encoding"，我不需要這玩意，自己對照情況看着辦吧
gzip_disable "MSIE [1-6]\."; // IE6對Gzip不怎么友好，不給它Gzip了
3、:wq保存退出，重新加載Nginx
nginx -s reload
4、用curl測試Gzip是否成功開啟
curl -I -H "Accept-Encoding: gzip, deflate" "http://www.slyar.com/blog/"
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
頁面成功壓縮
curl -I -H "Accept-Encoding: gzip, deflate" "http://www.slyar.com/blog/wp-content/plugins/photonic/include/css/photonic.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
css文件成功壓縮
curl -I -H "Accept-Encoding: gzip, deflate" "http://www.slyar.com/blog/wp-includes/js/jquery/jquery.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
js文件成功壓縮
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
圖片成功壓縮