在nginx上启用缓存

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我有自己的CentOS 6和Nginx VPS,我想启用缓存.要测试它,如果成功启用,我会使用Google PageSpeed Insight.
我的问题是,我没有太多经验,我必须启用缓存,我可以设置图像缓存等多长时间.
多数民众赞成在互联网上发现并尝试到目前为止:

>创建目录:/ etc / Nginx / sites-available和/ etc / Nginx / sites-enabled因为它们不知道以某种方式存在.
>链接创建的目录:/etc/Nginx/Nginx.conf并添加include / etc / Nginx / sites-enabled / *;在文件的末尾,但在最后}之前
>创建文件/etc/Nginx/sites-available/my-site.com.conf:

server {
listen       80;
server_name  localhost;

location / {
    root   /usr/share/Nginx/html;
    index  index.html index.htm;
}

location ~*  \.(jpg|jpeg|png|gif|ico|css|js)${
    expires 15d;
}

location ~*  \.(pdf)${
    expires 30d;
}

}
>链接conf文件:ln -s /etc/Nginx/sites-available/my-site.com.conf /etc/Nginx/sites-enabled/my-site.com.conf
>服务Nginx重启

我使用我的网站wordpress.

因此,每当我使用PageSpeed Insight或其他pagespeed工具测试我的页面时,它表示我不使用缓存来获取header.png,javascripts等.但我没有得到一些错误,即使我用Nginx -t检查配置文件,这显示了这一点:

Nginx: the configuration file /etc/Nginx/Nginx.conf Syntax is ok
Nginx: configuration file /etc/Nginx/Nginx.conf test is successful

我忘记了什么吗?

这是我完整的Nginx配置:http://pastebin.com/wxnzzePT

conf.d文件夹中的default.conf:http://pastebin.com/KUH2tSrD

您需要将缓存指令添加到default.conf文件中,并删除您创建的新文件.

您的新文件仅在用户使用http:// localhost访问该站点时使用.此外,与default.conf文件相比,新文件配置使用不同的路径.

此外,位置块内的根指令是不好的做法.

所以,你的default.conf应该是这样的:

#
# The default server
#
server {
    listen       80 default_server;
    server_name  213.165.xx.xx;

    #charset koi8-r;

    #access_log  logs/host.access.log  main;

    # Load configuration files for the default server block.
    include /etc/Nginx/default.d/*.conf;

    root   /var/www/wordpress;

    location / {
        index  index.html index.htm index.PHP;

        try_files $uri $uri/ /index.PHP?q=$request_uri;

    }

    location ~*  \.(jpg|jpeg|png|gif|ico|css|js)${
        expires 15d;
    }

    location ~*  \.(pdf)${
        expires 30d;
    }

    location /admin {
        auth_basic "Administrator Login";
        auth_basic_user_file /var/www/admin/.htpasswd;
    }

    #!!! IMPORTANT !!! We need to hide the password file from prying eyes
    # This will deny access to any hidden file (beginning with a .period)
    location ~ /\. { deny  all; }

    error_page  404              /404.html;
    location = /404.html {
        root   /usr/share/Nginx/html;
    }

    # redirect server error pages to the static page /50x.html
    #
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/Nginx/html;
    }


    # proxy the PHP scripts to Apache listening on 127.0.0.1:80
    #
    #location ~ \.PHP${
    #    proxy_pass   http://127.0.0.1;
    #}

    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
    #
    location ~ \.PHP${
        root           /var/www/wordpress;
        fastcgi_pass   127.0.0.1:9000;
        fastcgi_index  index.PHP;
        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
        include        fastcgi_params;
    }

    # deny access to .htaccess files,if Apache's document root
    # concurs with Nginx's one
    #
    #location ~ /\.ht {
    #    deny  all;
    #}
}

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