Problem with Varnish X-Cache: MISS all the time
Guillaume Quintard
guillaume at varnish-software.com
Mon May 14 09:01:34 UTC 2018
Hi,
you are hashing the cookie, that is pretty sure to kill your hit ratio.
Regards,
--
Guillaume Quintard
On Mon, May 14, 2018 at 9:40 AM, jack Linux <ilinuxer.85 at gmail.com> wrote:
> I Have website running on cloudflare + nginx + varnish on centos 6.9
> arch 64bit Distribution
>
>
> ============
> Header status =
> ============
>
> HTTP/1.1 200 OK
> Date: Mon, 14 May 2018 07:25:34 GMT
> Content-Type: text/html
> Connection: keep-alive
> Set-Cookie: __cfduid=d0d5a5c3e3423f286ca476d1fecbeeb7a1526282734;
> expires=Tue, 14-May-19 07:25:34 GMT; path=/; domain=.site.com;
> HttpOnly
> X-Powered-By: PHP/5.4.45
> Set-Cookie: PHPSESSID=4a3847f117e1a757e8b3f92784987bfd; path=/
> Expires: Thu, 19 Nov 1981 08:52:00 GMT
> Cache-Control: private, must-revalidate
> Pragma: no-cache
> Set-Cookie: detect_mobiles=20; expires=Tue, 15-May-2018 00:08:54 GMT;
> path=/
> Vary: Accept-Encoding
> X-Varnish: 1615241683
> Age: 0
> Via: 1.1 varnish
> X-Cache: MISS
> Set-Cookie: site.com=web01; path=/
> Server: cloudflare
> CF-RAY: 41aba1b134769c35-AMS
>
> =============
> = varnish config =
> =============
>
> /* SET THE HOST AND PORT OF SITE
> * *********************************************************/
>
> backend default {
> .host = "10.0.0.1";
> .port = "8080";
> }
>
> # SET THE ALLOWED IP OF PURGE REQUESTS
> # ##########################################################
> acl purge {
> "localhost";
> "10.0.0.1";
> }
>
> #THE RECV FUNCTION
> # ##########################################################
> sub vcl_recv {
> #remove HTTPOXY CGI vulnerability
> unset req.http.proxy;
>
> #remove extraneous host ports
> set req.http.host = regsub(req.http.Host, ":[0-9]+", "");
>
> # set realIP by trimming CloudFlare IP which will be used for
> various checks
> set req.http.X-Actual-IP = regsub(req.http.X-Forwarded-For,
> "[, ].*$", "");
>
> # Enable smart refreshing
> if (req.http.Cache-Control ~ "no-cache" && client.ip ~ purge) {
> set req.hash_always_miss = true;
> }
>
> # Unset cloudflare cookies
>
> # Remove has_js and CloudFlare/Google Analytics __* cookies.
> set req.http.Cookie = regsuball(req.http.Cookie,
> "(^|;\s*)(_[_a-z]+|has_js)=[^;]*", "");
> # Remove a ";" prefix, if present.
> set req.http.Cookie = regsub(req.http.Cookie, "^;\s*", "");
>
> # For Testing: If you want to test with Varnish passing (not
> caching) uncomment
> # return( pass );
>
> # FORWARD THE IP OF THE REQUEST
> if (req.restarts == 0) {
> if (req.http.x-forwarded-for) {
> set req.http.X-Forwarded-For =
> req.http.X-Forwarded-For + ", " + client.ip;
> } else {
> set req.http.X-Forwarded-For = client.ip;
> }
> }
>
> # DO NOT CACHE RSS FEED
> if (req.url ~ "/feed/") {
> return ( pass );
> }
>
> ## Do not cache search results, comment these 3 lines if you do want
> to cache them
>
> if (req.url ~ "/\?s\=") {
> return ( pass );
> }
>
> # CLEAN UP THE ENCODING HEADER.
> # SET TO GZIP, DEFLATE, OR REMOVE ENTIRELY. WITH VARY ACCEPT-ENCODING
> # VARNISH WILL CREATE SEPARATE CACHES FOR EACH
> # DO NOT ACCEPT-ENCODING IMAGES, ZIPPED FILES, AUDIO, ETC.
> # ##########################################################
> if (req.http.Accept-Encoding) {
> if (req.url ~ "\.(jpg|png|gif|gz|tgz|bz2|tbz|mp3|ogg)$") {
> # No point in compressing these
> remove req.http.Accept-Encoding;
> } elsif (req.http.Accept-Encoding ~ "gzip") {
> set req.http.Accept-Encoding = "gzip";
> } elsif (req.http.Accept-Encoding ~ "deflate") {
> set req.http.Accept-Encoding = "deflate";
> } else {
> # unknown algorithm
> remove req.http.Accept-Encoding;
> }
> }
>
> # IF THIS IS A PURGE REQUEST, THEN CHECK THE IPS SET ABOVE
> # BLOCK IF NOT ONE OF THOSE IPS
> # ##########################################################
> if (req.request == "PURGE") {
> if ( !client.ip ~ purge ) {
> error 405 "Not allowed.";
> }
> return (lookup);
> }
>
> # PIPE ALL NON-STANDARD REQUESTS
> # ##########################################################
> if (req.request != "GET" &&
> req.request != "HEAD" &&
> req.request != "PUT" &&
> req.request != "POST" &&
> req.request != "TRACE" &&
> req.request != "OPTIONS" &&
> req.request != "DELETE") {
> return (pipe);
> }
>
> # ONLY CACHE GET AND HEAD REQUESTS
> # ##########################################################
> if (req.request != "GET" && req.request != "HEAD") {
> return (pass);
> }
>
> # IF YOU GET HERE THEN THIS REQUEST SHOULD BE CACHED
> # ##########################################################
> return (lookup);
> }
>
> sub vcl_hash {
> #this is to store cache based on PHPSESSID or woocommerce cookie so
> cart doesn't show 0
> if (req.http.cookie) {
> hash_data(req.http.cookie);
> }
> #fix flexible ssl css
> if (req.http.x-forwarded-proto) {
> hash_data(req.http.x-forwarded-proto);
> }
> }
>
> # HIT FUNCTION
> # ##########################################################
> sub vcl_hit {
> # IF THIS IS A PURGE REQUEST THEN DO THE PURGE
> # ##########################################################
> if (req.request == "PURGE") {
> purge;
> error 200 "Purged.";
> }
>
> return (deliver);
> }
>
> # MISS FUNCTION
> # ##########################################################
> sub vcl_miss {
> if (req.request == "PURGE") {
> purge;
> error 200 "Purged.";
> }
>
> return (fetch);
> }
>
> # FETCH FUNCTION
> # ##########################################################
> sub vcl_fetch {
> # I SET THE VARY TO ACCEPT-ENCODING, THIS OVERRIDES W3TC
> # TENDANCY TO SET VARY USER-AGENT. YOU MAY OR MAY NOT WANT
> # TO DO THIS
> # ##########################################################
>
> set beresp.http.Vary = "Accept-Encoding";
>
> }
>
> # DELIVER FUNCTION #
> ##########################################################
> sub vcl_deliver {
>
> if ( req.url ~ "\?action=wpp_get_popular" && !req.http.cookie ~
> "wordpress_logged_in" ) {
> # Remove headers preventing Cloudflare cache
> unset resp.http.Cache-Control;
> unset resp.http.Expires;
> unset resp.http.Pragma;
> unset resp.http.ETag;
> # Cache request in browser for 1 day (in seconds)
> set resp.http.Cache-Control = "max-age=259200";
> }
>
>
> # IF THIS PAGE IS ALREADY CACHED THEN RETURN A 'HIT' TEXT
> # IN THE HEADER (GREAT FOR DEBUGGING)
> # ##########################################################
> if (obj.hits > 0) {
> set resp.http.X-Cache = "HIT";
> # IF THIS IS A MISS RETURN THAT IN THE HEADER
> # ##########################################################
> } else {
> set resp.http.X-Cache = "MISS";
> }
> }
> _______________________________________________
> varnish-misc mailing list
> varnish-misc at varnish-cache.org
> https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc
>
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