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/1.1 200 OK Server: nginx/1.7.5 Date: Fri, 07 Nov 2014 14:26:25 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: 1 Rewrite, 1 Expensive Rewrite. [ 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/1.1 200 OK Server: nginx/1.7.5 Content-Type: text/html Connection: keep-alive Vary: Accept-Encoding Date: Fri, 07 Nov 2014 15:03:29 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/1.1 200 OK Server: nginx/1.7.5 Date: Fri, 07 Nov 2014 15:04:56 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 RewriteLevel PassThrough; # 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 CssFlattenMaxBytes 5120; # 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/*";
原创文章,作者:ItWorker,如若转载,请注明出处:https://blog.ytso.com/40623.html