NGX_HTTP_CACHE_EXPIRED  727 http/ngx_http_upstream.c         u->cache_status = NGX_HTTP_CACHE_EXPIRED;
NGX_HTTP_CACHE_EXPIRED 1660 http/ngx_http_upstream.c         if (u->cache_status == NGX_HTTP_CACHE_EXPIRED
NGX_HTTP_CACHE_EXPIRED 2854 http/ngx_http_upstream.c             if (u->cache_status == NGX_HTTP_CACHE_EXPIRED