w3total

         # BEGIN W3TC Page Cache core
          set $w3tc_rewrite 0;
          if ($request_method = POST) {
          set $w3tc_rewrite 0;
          }
          if ($query_string != "") {
          set $w3tc_rewrite 0;
          }
          if ($request_uri !~ \/$) {
          set $w3tc_rewrite 0;
          }
          if ($http_cookie ~* "(comment_author|wp\-postpass|w3tc_logged_out|wordpress_logged_in|wptouch_switch_toggle)") {
          set $w3tc_rewrite 0;
          }
          if ($http_user_agent ~* "(W3\ Total\ Cache/0\.9\.2\.7)") {
          set $w3tc_rewrite 0;
          }
          set $w3tc_enc "";
          if ($http_accept_encoding ~ gzip) {
          set $w3tc_enc "_gzip";
          }
          if (-f "/wp-content/cache/page_enhanced/$http_host/$request_uri/_index.html$w3tc_enc") {
          set $w3tc_rewrite 1;
          }
          if ($w3tc_rewrite = 1) {
          rewrite .* "/wp-content/cache/page_enhanced/$http_host/$request_uri/_index.html$w3tc_enc" last;
          }
          # END W3TC Page Cache core