nginx缓存以及清除缓存的使用

Http {
  .
  .
  .
  proxy_cache_path /cache/nginx levels=1:2 keys_zone=imooc_cache:10m max_size=5g inactive=60m use_temp_path=off;

  .
  .
  .
  server {
    .
    .
    .
    location /api/ {
      proxy_cache imooc_cache;
      proxy_pass 127.0.0.1:81/api/;
      proxy_cache_valid 200 304 12h;
      proxy_cache_valid any 10m;
      proxy_cache_key $host$uri$is_args$args;
      include proxy_params;
    }
  }
}

proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_connect_timeout 30;
proxy_send_timeout 60;
proxy_read_timeout 60;
proxy_buffering on;
proxy_buffer_size 32k;
proxy_buffers 4 128k;

[root@localhost 02]# cat 9563faff155b9fcfbf3fb1b16c253021 
¿]n`ÿÿÿÿÿÿÿÿÿ´m`Džt> 
KEY: 192.168.148.170/api/index.PHP
HTTP/1.1 200 OK
Date: Wed, 07 Apr 2021 13:34:55 GMT
Server: Apache/2.4.46 (Unix) php/7.4.16
X-Powered-By: PHP/7.4.16
Content-Length: 31
Connection: close
Content-Type: text/html; charset=UTF-8

this is 192.168.148.170_php_new[root@localhost 02]# 

./configure --sbin-path=/usr/local/nginx/nginx --conf-path=/usr/local/nginx/nginx.conf --pid-path=/usr/local/nginx/nginx.pid --with-http_gzip_static_module --with-http_stub_status_module --with-file-aio --with-http_realip_module --with-http_ssl_module --with-pcre=/home/pcre-8.44 --with-zlib=/home/zlib-1.2.11 --with-openssl=/home/openssl-1.1.1g --add-module=/home/ngx_cache_purge-2.3

make -j2

make install

location ~ /clear_cache(.*) {
     allow   all;
     proxy_cache_purge imooc_cache $host$1$is_args$args;
}

# set 指令为变量设置，proxy_no_cache参数中的值可以设置多个，但是多个值中，只要有一个是不为0的，就会通过缓存响应数据
server
{
    .
    .
    .
    location /api/ {
       set $a 0; #设置初始值
       if ( $request_uri ~ /api/noapi/(.*) ){
           set $a 1; #如果满足不缓存 设置为1
       }

       proxy_no_cache $a;//
       .
       .
       .
    }
    location ~ /clear_cache(.*) {
         allow   all;
         proxy_cache_purge imooc_cache $host$1$is_args$args;
    }
}