nginx - 在http PUT或POST上清除缓存

http {
    proxy_cache_path /tmp/nginx levels=1:2 keys_zone=my_cache:10m max_size=10g inactive=60m use_temp_path=off;

    server {
        listen 80;
        server_name example.com;

        location / {
            proxy_pass http://backend;
            proxy_cache my_cache;
            proxy_cache_valid 200 206 60m;
            proxy_cache_lock on;
            proxy_cache_use_stale error timeout updating http_500 http_502 http_503 http_504;
            proxy_cache_bypass $http_cache_control;
            add_header X-Cache-Status $upstream_cache_status;

            proxy_cache_purge PUT POST;
        }
    }
}