nginx fastcgi_cache

参考 

http://www.cnxct.com/several-reminder-in-nginx-fastcgi_cache-and-php-session_cache_limiter

http://nginx.org/en/docs/http/ngx_http_fastcgi_module.html#fastcgi_cache

fastcgi_cache_path /data/files/game/nginxCache/content levels=1:2 keys_zone=Hpp:250m inactive=1d max_size=1G;
fastcgi_temp_path /data/files/game/nginxCache/temp;
fastcgi_cache_key "$scheme$request_method$host$request_uri$is_args$args";
fastcgi_cache_use_stale error timeout invalid_header http_500;
#nocache
fastcgi_ignore_headers "Cache-Control" "Expires" "Set-Cookie";

server{
		set $skip_cache 0;
                #post访问不缓存
                if ($request_method = POST) {
                                set $skip_cache 1;
                }
                #动态查询不缓存
                if ($query_string ~* "nonocache") {
                        set $skip_cache 1;
                }
                #后台等特定页面不缓存（其他需求请自行添加即可）
                if ($request_uri ~* "users") {
                    set $skip_cache 1;
                }
                if ($request_uri ~* "reply.php") {
                    set $skip_cache 1;
                }
                #对登录后的结果缓存(hehe就是一个判断登录与否的Cookei名称）
                if ($http_cookie ~* "ECM_ID") {
                                set $skip_cache 1;
                }

		fastcgi_cache_bypass $skip_cache;
                fastcgi_no_cache $skip_cache;
                add_header X-Cache "$upstream_cache_status From $host";
                add_header KCache "$scheme$request_method$host$request_uri$is_args$args";
                fastcgi_cache Hpp;
                fastcgi_cache_valid 200 301 302 1d;
}

fastcgi_cache的清除需要使用ngx_cache_purge这个模块.

ngx_cache_purge 是 nginx 的第三方那个模块，用于清除 FastCGI, proxy, SCGI and uWSGI 缓存

参考：

点击打开链接https://www.cnhzz.com/nginx_cache_purge/

点击打开链接http://54im.com/nginx/ngx_cache_purge.html

或者

自己写方法删除缓存目录下的文件

举例：

fastcgi_cache_path /www/php_cache  levels=1:2  keys_zone=cache_php:30m inactive=1d max_size=10g;

1:2会生成16*256个字目录

root@vbstevena nginxCache # find . -type f 
./content/8/2d/4573270729c3db4e26e68198e5a1c2d8
./content/4/81/75a8c077cb22d087cf61c233a2184814
./content/1/6e/a4a589e68d5352e716f4033d01c026e1

<?php
function purgeCache()
{
    $url = $this->post("url");
 
    if (empty($url) || !Cola_Com_Validate::url($url)) {
        exit("请输入正确的URL。");
    }
 
    $md5 = md5($url);
    $cacheFile = $this->_cacheRoot . "/" . substr($md5, -1) . "/" . substr($md5, -3, 2) . "/" . $md5;
 
    if (!file_exists($cacheFile)) {
        exit("缓存不存在。");
    }
 
    if (@unlink($cacheFile)) {
        echo "清除缓存成功。";
    } else {
        echo "清除缓存失败。";
    }
}

参考：点击打开链接http://www.lvtao.net/server/224.html#comment-1904