set $skip_cache 0;
if ($request_method = POST) {
    set $skip_cache 1;
}   
if ($query_string != "") {
    set $skip_cache 1;
}   
if ($request_uri ~* "/wp-admin/|/xmlrpc.php|wp-.*.php|/feed/|index.php|sitemap(_index)?.xml") {
    set $skip_cache 1;
}   
if ($http_cookie ~* "comment_author|wordpress_[a-f0-9]+|wp-postpass|wordpress_no_cache|wordpress_logged_in") {
    set $skip_cache 1;
}
location ~ [^/]\.php(/|$)
    {
        try_files $uri =404;
        fastcgi_pass unix:/tmp/php-cgi-80.sock;
        fastcgi_index index.php;
        include fastcgi.conf;  
        add_header Strict-Transport-Security "max-age=63072000; includeSubdomains; preload";
        fastcgi_cache_bypass $skip_cache;
        fastcgi_no_cache $skip_cache;
        add_header X-Cache "$upstream_cache_status From $host";
        fastcgi_cache WORDPRESS;
        add_header Cache-Control  max-age=0;
        add_header Nginx-Cache "$upstream_cache_status";
        add_header Last-Modified $date_gmt;
        add_header X-Frame-Options SAMEORIGIN;
        add_header X-Content-Type-Options nosniff;
        add_header X-XSS-Protection "1; mode=block";
        etag  on;
        fastcgi_cache_valid 200 301 302 1d;
}


location ~ /purge(/.*) {
    allow 127.0.0.1;
    deny all;
    fastcgi_cache_purge WORDPRESS "$scheme$request_method$host$1";
}