varnish and wordpress
Miguel González
miguel_3_gonzalez at yahoo.es
Thu Jan 26 23:18:01 CET 2017
thanks for this information.
Wouldn´t it help just setting in .htaccess:
ExpiresByType text/html "access 1 month"
?
Miguel
On 01/26/17 10:42 PM, Carlos Fernandez wrote:
> Per php.net <http://php.net>:
>
> "The cache limiter defines which cache control HTTP headers are sent to
> the client. These headers determine the rules by which the page content
> may be cached by the client and intermediate proxies. Setting the cache
> limiter to /nocache/disallows any client/proxy caching. A value
> of /public/ permits caching by proxies and the client,
> whereas /private/ disallows caching by proxies and permits the client to
> cache the contents."
>
> Varnish obeys the cache control headers in the backend response,
> therefore this setting (and cache_expires) indirectly affects Varnish by
> way of the headers. You could alter them in VCL, but that takes more work.
>
>
> On Thu, Jan 26, 2017 at 16:29 Miguel González
> <miguel_3_gonzalez at yahoo.es <mailto:miguel_3_gonzalez at yahoo.es>> wrote:
>
> What is the relation of this setting with Varnish? I´m not finding any
> information about this setting and Varnish.
>
> Thanks!
>
> Miguel
>
>
> On 01/26/17 9:22 PM, Carlos Fernandez wrote:
> > That VCL looks similar to what we use. What does the
> > "session.cache_limiter" setting in your php.ini file say? If it's
> set to
> > "nocache" (the default), then PHP will always respond with an Expires
> > header set in the past so that Varnish will not cache it.
> >
> > On Thu, Jan 26, 2017 at 2:25 PM, Miguel González
> > <miguel_3_gonzalez at yahoo.es <mailto:miguel_3_gonzalez at yahoo.es>
> <mailto:miguel_3_gonzalez at yahoo.es
> <mailto:miguel_3_gonzalez at yahoo.es>>> wrote:
> >
> > Dear all,
> >
> > Probably since I´m a newbie I assume a cache system makes a
> "static"
> > copy of a web and serve it to the browser. I have several
> Wordpress
> > sites, same backend and speed load differs quite much (from 1
> second to
> > 6 seconds). Obviously size matters but shouldn´t load all
> items (CSS,
> > JS, images) almost at the same time? Webpagetest shows it´s
> not the
> > case.
> >
> > I have tried to use together with Varnish other plugin
> caches as W3
> > Total Cache but the performance is even worse.
> >
> > Maybe my assumptions are wrong or my VCL is wrong.
> >
> > I have 4.1 as was suggested by someone from the list.
> >
> > Thanks!
> >
> > Miguel
> >
> > my default.vcl:
> >
> > #
> > # This is an example VCL file for Varnish.
> > #
> > # It does not do anything by default, delegating control to the
> > # builtin VCL. The builtin VCL is called when there is no explicit
> > # return statement.
> > #
> > # See the VCL chapters in the Users Guide at
> > https://www.varnish-cache.org/docs/
> > <https://www.varnish-cache.org/docs/>
> > # and http://varnish-cache.org/trac/wiki/VCLExamples
> > <http://varnish-cache.org/trac/wiki/VCLExamples> for more
> examples.
> >
> > # Marker to tell the VCL compiler that this VCL has been
> adapted to the
> > # new 4.0 format.
> > vcl 4.0;
> >
> > import std;
> >
> > # Default backend definition. Set this to point to your
> content server.
> > backend default {
> > .host = "127.0.0.1";
> > .port = "82";
> > .connect_timeout = 600s;
> > .first_byte_timeout = 600s;
> > .between_bytes_timeout = 600s;
> >
> >
> > }
> >
> > acl purge {
> > "localhost";
> > "127.0.0.1";
> > }
> >
> >
> > # This function is used when a request is send by a HTTP client
> > (Browser)
> > sub vcl_recv {
> >
> > # remove ?ver=xxxxx strings from urls so css and js
> files are
> > cached.
> > # Watch out when upgrading WordPress, need to restart
> Varnish or
> > flush cache.
> > set req.url = regsub(req.url, "\?ver=.*$", "");
> >
> > # Remove "replytocom" from requests to make caching
> better.
> > set req.url = regsub(req.url, "\?replytocom=.*$", "");
> >
> > #We pass real IP and Port to the backend
> >
> > if (req.http.X-Forwarded-Proto == "https" ) {
> > set req.http.X-Port = "443";
> > } else {
> > set req.http.X-Port = "80";
> > }
> >
> > set req.http.X-Forwarded-For =
> regsub(req.http.X-Forwarded-For,
> > "^([^,]+),?.*$", "\1");
> >
> >
> > # Normalize the header, remove the port (in case
> you're testing
> > this on various TCP ports)
> >
> > set req.http.Host = regsub(req.http.Host, ":[0-9]+", "");
> >
> > # 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*",
> "");
> >
> >
> > # Allow purging from ACL
> > if (req.method == "PURGE") {
> > # If not allowed then a error 405 is returned
> > if (!client.ip ~ purge) {
> > return(synth(405, "This IP is not
> allowed to
> > send PURGE requests."));
> > }
> > # If allowed, do a cache_lookup -> vlc_hit() or
> > vlc_miss()
> > return (purge);
> > }
> >
> > # Post requests will not be cached
> > #if (req.http.Authorization || req.method == "POST") {
> > # return (pass);
> > #}
> >
> > # Pass anything other than GET and HEAD directly.
> > if (req.method != "GET" && req.method != "HEAD") {
> > return( pass );
> > } /* We only deal with GET and HEAD by default */
> >
> >
> > #Woocommerce don't cache :
> > if (req.url ~
> >
> "^/(cart|my-account/*|checkout|addons|logout|lost-password|product/*)")
> > {
> > return (pass);
> > }
> >
> > #Woocommerce add to cart pass :
> > if (req.url ~ "\?add-to-cart=" ) {
> > return (pass);
> > }
> > if (req.url ~ "/wp-cron.php" || req.url ~
> "preview=true") {
> > return (pass);
> > }
> >
> > # Woocommerce
> > if (req.url ~ "(cart|my-account|checkout|addons)") {
> > return (pass);
> > }
> > if ( req.url ~ "\?add-to-cart=" ) {
> > return (pass);
> > }
> >
> >
> > # --- WordPress specific configuration
> > # Did not cache the admin and login pages
> > if (req.url ~
> >
> "nocache|cart|my-account|checkout|addons|tienda|mi-cuenta|carro|producto/*|login|wp-admin|wp-(comments-post|login|signup|activate|mail|cron)\.php|preview\=true|admin-ajax\.php|xmlrpc\.php|bb-admin|whm-server-status|server-status|control\.php|bb-login\.php|bb-reset-password\.php|register\.php")
> > {
> > return (pass);
> > }
> >
> > if (req.url ~ "(ajax|dynamic|custom)") {
> > return(pass);
> > }
> >
> > # Remove the "has_js" cookie
> > set req.http.Cookie = regsuball(req.http.Cookie,
> "has_js=[^;]+(;
> > )?", "");
> >
> > # Remove any Google Analytics based cookies
> > set req.http.Cookie = regsuball(req.http.Cookie,
> "__utm.=[^;]+(;
> > )?", "");
> >
> > # Remove the Quant Capital cookies (added by some plugin,
> > all __qca)
> > set req.http.Cookie = regsuball(req.http.Cookie,
> "__qc.=[^;]+(;
> > )?", "");
> >
> > # Remove the wp-settings-1 cookie
> > set req.http.Cookie = regsuball(req.http.Cookie,
> > "wp-settings-1=[^;]+(; )?", "");
> >
> > # Remove the wp-settings-time-1 cookie
> > set req.http.Cookie = regsuball(req.http.Cookie,
> > "wp-settings-time-1=[^;]+(; )?", "");
> >
> > # Remove the wp test cookie
> > set req.http.Cookie = regsuball(req.http.Cookie,
> > "wordpress_test_cookie=[^;]+(; )?", "");
> >
> > # Are there cookies left with only spaces or that are
> empty?
> > if (req.http.cookie ~ "^ *$") {
> > unset req.http.cookie;
> > }
> >
> > # Cache the following files extensions
> > if (req.url ~ "\.(txt|css|js|png|gif|jp(e)?g|swf|ico)") {
> > unset req.http.cookie;
> > }
> >
> > # Normalize Accept-Encoding header and compression
> > #
> https://www.varnish-cache.org/docs/3.0/tutorial/vary.html
> > <https://www.varnish-cache.org/docs/3.0/tutorial/vary.html>
> > if (req.http.Accept-Encoding) {
> > # Do no compress compressed files...
> > if (req.url ~
> > "\.(jpg|png|gif|gz|tgz|bz2|tbz|mp3|ogg)$") {
> > unset 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 {
> > unset req.http.Accept-Encoding;
> > }
> > }
> >
> > # Check the cookies for wordpress-specific items
> > if (req.http.Cookie ~ "wordpress_" || req.http.Cookie ~
> > "comment_") {
> > return (pass);
> > }
> > if (!req.http.cookie) {
> > unset req.http.cookie;
> > }
> >
> > # --- End of WordPress specific configuration
> >
> > # Did not cache HTTP authentication and HTTP Cookie
> > if (req.http.Authorization || req.http.Cookie) {
> > # Not cacheable by default
> > return (pass);
> > }
> >
> > # Cache all others requests
> > return (hash);
> > }
> >
> > sub vcl_pipe {
> > return (pipe);
> > }
> >
> > sub vcl_pass {
> > return (fetch);
> > }
> >
> > # The data on which the hashing will take place
> > sub vcl_hash {
> > hash_data(req.url);
> > if (req.http.host) {
> > hash_data(req.http.host);
> > } else {
> > hash_data(server.ip);
> > }
> >
> > # If the client supports compression, keep that in a
> > different cache
> > if (req.http.Accept-Encoding) {
> > hash_data(req.http.Accept-Encoding);
> > }
> >
> > return (lookup);
> > }
> >
> > # This function is used when a request is sent by our backend
> (Nginx
> > server)
> > sub vcl_backend_response {
> > # Remove some headers we never want to see
> > unset beresp.http.Server;
> > unset beresp.http.X-Powered-By;
> >
> > if (beresp.http.content-type ~
> > "(text|javascript|application/x-font-woff)") {
> > set beresp.do_gzip = true;
> > }
> >
> > # For static content strip all backend cookies
> > if (bereq.url ~ "\.(css|js|png|gif|jp(e?)g)|swf|ico") {
> > unset beresp.http.cookie;
> > }
> > # Don't store backend
> > if (bereq.url ~ "wp-(login|admin)" || bereq.url ~
> > "preview=true") {
> > set beresp.uncacheable = true;
> > set beresp.ttl = 30s;
> > return (deliver);
> > }
> >
> > # Only allow cookies to be set if we're in admin area
> > if (!(bereq.url ~
> >
> "(wp-login|cart|my-account|checkout|addons|tienda|mi-cuenta|carro|producto/*|login|wp-admin|preview=true)"))
> > {
> > unset beresp.http.set-cookie;
> > }
> >
> > # don't cache response to posted requests or those with
> > basic auth
> > if ( bereq.method == "POST" ||
> bereq.http.Authorization ) {
> > set beresp.uncacheable = true;
> > set beresp.ttl = 120s;
> > return (deliver);
> > }
> >
> > # don't cache search results
> > if ( bereq.url ~ "\?s=" ){
> > set beresp.uncacheable = true;
> > set beresp.ttl = 120s;
> > return (deliver);
> > }
> >
> > # only cache status ok
> > if ( beresp.status != 200 ) {
> > set beresp.uncacheable = true;
> > set beresp.ttl = 120s;
> > return (deliver);
> > }
> >
> > # A TTL of 24h
> > set beresp.ttl = 24h;
> > # Define the default grace period to serve cached content
> > #set beresp.grace = 30s;
> > set beresp.grace = 1h;
> >
> > return (deliver);
> > }
> >
> > # The routine when we deliver the HTTP request to the user
> > # Last chance to modify headers that are sent to the client
> > sub vcl_deliver {
> > if (obj.hits > 0) {
> > set resp.http.X-Cache = "cached";
> > } else {
> > set resp.http.x-Cache = "uncached";
> > }
> >
> > # Remove some headers: PHP version
> > unset resp.http.X-Powered-By;
> >
> > # Remove some headers: Apache version & OS
> > unset resp.http.Server;
> >
> > # Remove some heanders: Varnish
> > unset resp.http.Via;
> > unset resp.http.X-Varnish;
> >
> > return (deliver);
> > }
> >
> > sub vcl_init {
> > return (ok);
> > }
> >
> > sub vcl_fini {
> > return (ok);
> > }
> >
> > _______________________________________________
> > varnish-misc mailing list
> > varnish-misc at varnish-cache.org
> <mailto:varnish-misc at varnish-cache.org>
> <mailto:varnish-misc at varnish-cache.org
> <mailto:varnish-misc at varnish-cache.org>>
> > https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc
> >
> <https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc>
> >
> >
> >
> >
> > --
> >
> > Best regards,
> >
> > --
> >
> > Carlos M. Fernández
> >
> > Enterprise Systems Manager
> >
> > *Saint Joseph’s University*
> >
> > Philadelphia PA 19131
> >
> > T: +1 610 660 1501
> >
>
>
> _______________________________________________
> varnish-misc mailing list
> varnish-misc at varnish-cache.org <mailto:varnish-misc at varnish-cache.org>
> https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc
>
> --
>
> Best regards,
>
> --
>
> Carlos M. Fernández
>
> Enterprise Systems Manager
>
> *Saint Joseph’s University*
>
> Philadelphia PA 19131
>
> T: +1 610 660 1501
>
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