Google Pagespeed在作为一个Nginx的模块在研发这么久之后仍是beta版本,着实有点尴尬,不过也证明了该项目是成功的,最起码它仍在迭代,实际上在使用中,我们也碰到一些非模块本身的问题,譬如当它基于反向代理时模板的寻址,图片的URL重写…为此不得不对其做一些配置让它不是看起来多了一个协议,而是真正的能对页面的细节进行优化,最大限度的压榨服务器的的性能提高用户访问速度..
在实际使用中,它能够带来什么
1、优化缓存并整合应用程序的数据和逻辑 2、优化往返请求,降低请求开销,降低响应页面大小 3、对CSS Javascript 进行合并,这里相对来说要慎用(需要前期测试) 4、DNS预加载,延时加载图片等过滤器的支持(赞) 5、等等(少说多做)
首先是我的目录结构
- ###其他目录不作解释,source 目录即所有源码包的路径###
- [root@iPython software]# ls /software/
- mysql nginx php readme.txt sharelib source var_temp
- ###库文件的支持###
- [root@ipython software]# ls /software/sharelib/
- curl freetype gd google-libunwind google-perftools libiconv libjpeg libmcrypt libpng libtool libxml2 mhash ncurses openssl pcre zlib
- Nginx版本:
- [root@ipython software]# curl -I 127.0.0.1
- HTTP/1.1200 OK
- Server: nginx/1.7.5
- Date:Fri,07Nov201414:26:25 GMT
- Content-Type: text/html
- Connection: keep-alive
- Vary:Accept-Encoding
下载地址和参考地址(墙内就不建议点了):
ngx-pagespeed for github
- [root@ipython source]# wget https://github.com/pagespeed/ngx_pagespeed/archive/release-1.9.32.1-beta.zip
ngx-pagespeed optimization library
- [root@ipython source]# wget https://dl.google.com/dl/page-speed/psol/1.9.32.1.tar.gz
ngx-pagespeed official
- http://ngxpagespeed.com/ngx_pagespeed_example/
GoogleDevelopers
- https://developers.google.com/speed/docs/mod_pagespeed/build_ngx_pagespeed_from_source
开始编译Ngx-pagespeed
- ###解开程序包--我在写这篇文章的时候,它似乎已经又更新了...建议参考的同学使用最新版###
- [root@ipython source]# unzip release-1.9.32.1-beta
- [root@ipython source]# cd ngx_pagespeed-release-1.9.32.1-beta/
- ##将pagespeed 的优化库解压至当前目录##
- [root@ipython ngx_pagespeed-release-1.9.32.1-beta]# tar zxf ../1.9.32.1.tar.gz -C ./
- ##此刻你的目录路径应该是这样的##
- [root@ipython ngx_pagespeed-release-1.9.32.1-beta]# ls
- config cpp_feature LICENSE psol README.md scripts src test
- ##重新编译nginx##
- [root@ipython ngx_pagespeed-release-1.9.32.1-beta]# cd ../nginx-1.7.5/
- ###请基于你自己的编译参数加上最后一条 --add-module ,切勿直接复制粘贴,因为我的环境是基于自己弄的一键包来演示的(如果你也需要?)###
- [root@ipython nginx-1.7.5]#./configure --prefix=/software/nginx --user=nginx --group=nginx --add-module=../ngx_pagespeed-release-1.9.32.1-beta
- ##预配置结束后执行##
- [root@ipython nginx-1.7.5]# make
- ##如果你是全新安装,在预配置结束后make install,如果是重新编译,你可以这样##
- [root@ipython nginx-1.7.5]# mv /software/nginx/sbin/nginx /software/nginx/sbin/nginx.bak
- [root@ipython nginx-1.7.5]# cp objs/nginx /software/nginx/sbin/
- [root@ipython nginx-1.7.5]# kill -USR2 `cat /software/nginx/nginx.pid`
- [root@ipython nginx-1.7.5]# kill -QUIT `cat /software/nginx/nginx.pid.oldbin`
让常用的配置开启Pagespeed
- ##注意那条include##
- [root@ipython nginx-1.7.5]# vi /software/nginx/conf/nginx.conf
- server
- {
- listen 80;
- server_name 127.0.0.1;
- include pagespeed.conf;
- ...我省略了好多行
- #新增配置文件,配置后面再解释#
- [root@ipython nginx-1.7.5]# cat /software/nginx/conf/pagespeed.conf
- pagespeed on;
- pagespeed FileCachePath/software/var_temp/nginx/pagespeed/;
- ##重启nginx|reload也可以##
- [root@ipython nginx-1.7.5]# service nginx restart
- Stopping nginx:[ OK ]
- Starting nginx:[1107/230146:INFO:google_message_handler.cc(35)]No threading detected.Own threads:1Rewrite,1ExpensiveRewrite.
- [ OK ]
- ##看看http头 和前面是不是不一样了##
- [root@ipython nginx-1.7.5]# curl -I 127.0.0.1
- HTTP/1.1200 OK
- Server: nginx/1.7.5
- Content-Type: text/html
- Connection: keep-alive
- Vary:Accept-Encoding
- Date:Fri,07Nov201415:03:29 GMT
- X-Page-Speed:1.9.32.1-4238
- Cache-Control: max-age=0,no-cache
- ##临时关闭pagespeed##
- [root@ipython nginx-1.7.5]# curl -I 127.0.0.1?ModPagespeed=off
- HTTP/1.1200 OK
- Server: nginx/1.7.5
- Date:Fri,07Nov201415:04:56 GMT
- Content-Type: text/html
- Connection: keep-alive
- Vary:Accept-Encoding
一个示例配置文件
- [root@ipython nginx-1.7.5]# cat /software/nginx/conf/pagespeed.conf
- # 启用ngx_pagespeed
- pagespeed on;
- pagespeed FileCachePath/software/var_temp/nginx/pagespeed/;
- # 禁用CoreFilters
- pagespeed RewriteLevelPassThrough;
- # 启用压缩空白过滤器
- pagespeed EnableFilters collapse_whitespace;
- # 启用JavaScript库卸载
- pagespeed EnableFilters canonicalize_javascript_libraries;
- # 把多个CSS文件合并成一个CSS文件
- pagespeed EnableFilters combine_css;
- # 把多个JavaScript文件合并成一个JavaScript文件
- pagespeed EnableFilters combine_javascript;
- # 删除带默认属性的标签
- pagespeed EnableFilters elide_attributes;
- # 改善资源的可缓存性
- pagespeed EnableFilters extend_cache;
- # 更换被导入文件的@import,精简CSS文件
- pagespeed EnableFilters flatten_css_imports;
- pagespeed CssFlattenMaxBytes5120;
- # 延时加载客户端看不见的图片
- pagespeed EnableFilters lazyload_images;
- # 启用JavaScript缩小机制
- pagespeed EnableFilters rewrite_javascript;
- # 启用图片优化机制
- pagespeed EnableFilters rewrite_images;
- # 预解析DNS查询
- pagespeed EnableFilters insert_dns_prefetch;
- # 重写CSS,首先加载渲染页面的CSS规则
- pagespeed EnableFilters prioritize_critical_css;
- # Example 禁止pagespeed 处理/ipython/目录
- pagespeed Disallow"*/ipython/*";