Optimize FastCGI Cache

install/deb/nginx/nginx.conf

@@ -45,6 +45,8 @@ http {
     fastcgi_send_timeout            180s;
     fastcgi_cache_lock              on;
     fastcgi_cache_lock_timeout      5s;
+    fastcgi_cache_background_update on;
+    fastcgi_cache_revalidate        on;
     
     # Proxy settings
     proxy_redirect                  off;