nginx fastcgi caching reverse proxy

nginx_fcgi_reverse_proxy_cache.conf

fastcgi_cache_path /var/cache/nginx levels=1:2 keys_zone=fpmcache:100m max_size=10g inactive=60m use_temp_path=off;
fastcgi_cache_key "$request_uri|$request_body";
fastcgi_cache_methods POST;
server {
    server_tokens off;
    listen       80 default_server;
    server_name  server_name _;

    access_log   /dev/stdout;
    error_log    /dev/stderr;

    root /opt/code;

    location / {
        try_files $uri /index.php$is_args$args;
    }

    set $disable_cache 1;
    if ($request_uri ~ "^/cache") {set $disable_cache 0;}

    location ~ [^/]\.php(/|$) {
        fastcgi_cache_bypass $disable_cache;
        fastcgi_no_cache $disable_cache;

        fastcgi_cache fpmcache;
        fastcgi_cache_valid 200 15m;
        fastcgi_cache_min_uses 1;
        fastcgi_cache_lock on;
        add_header X-FastCGI-Cache $upstream_cache_status;

        #basic fpm settings
        fastcgi_pass fpm:9000;
        fastcgi_split_path_info ^(.+\.php)(/.*)$;
        fastcgi_read_timeout 35;
        include fastcgi_params;
        fastcgi_param DOCUMENT_ROOT $realpath_root;
        fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
    }
}