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Example Varnish 4.0 Configuration
#########################################################################
# This is an example VCL file for Varnish 4.0. #
# From: https://gist.github.com/davidthingsaker/6b0997b641fdd370a395 #
# LICENSE: If this could help you in any way, you are obliged to use it #
# for free with no limitations. #
#########################################################################
# 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 = "8080";
}
sub vcl_recv {
# Happens before we check if we have this in cache already.
#
# Typically you clean up the request here, removing cookies you don't need,
# rewriting the request, etc.
# Properly handle different encoding types
if (req.http.Accept-Encoding) {
if (req.url ~ "\.(jpg|jpeg|png|gif|gz|tgz|bz2|tbz|mp3|ogg|swf|woff)$") {
# No point in compressing these
unset req.http.Accept-Encoding;
} elsif (req.http.Accept-Encoding ~ "gzip") {
set req.http.Accept-Encoding = "gzip";
} elsif (req.http.Accept-Encoding ~ "deflate") {
set req.http.Accept-Encoding = "deflate";
} else {
# unknown algorithm (aka crappy browser)
unset req.http.Accept-Encoding;
}
}
# Cache files with these extensions
if (req.url ~ "\.(js|css|jpg|jpeg|png|gif|gz|tgz|bz2|tbz|mp3|ogg|swf|woff)$") {
unset req.http.cookie;
return (hash);
}
# Dont cache anything thats on the blog page or thats a POST request
if (req.url ~ "^/blog" || req.method == "POST") {
return (pass);
}
# This is Laravel specific, we have session-monster which sets a no-session header if we dont really need the set session cookie.
# Check for this and unset the cookies if not required
# Except if its a POST request
if (req.http.X-No-Session ~ "yeah" && req.method != "POST") {
unset req.http.cookie;
}
return (hash);
}
sub vcl_backend_response {
# Happens after we have read the response headers from the backend.
#
# Here you clean the response headers, removing silly Set-Cookie headers
# and other mistakes your backend does.
# This is how long Varnish will cache content. Set at top for visibility.
set beresp.ttl = 1d;
if ((bereq.method == "GET" && bereq.url ~ "\.(css|js|xml|gif|jpg|jpeg|swf|png|zip|ico|img|wmf|txt)$") ||
bereq.url ~ "\.(minify).*\.(css|js).*" ||
bereq.url ~ "\.(css|js|xml|gif|jpg|jpeg|swf|png|zip|ico|img|wmf|txt)\?ver") {
unset beresp.http.Set-Cookie;
set beresp.ttl = 5d;
}
# Unset all cache control headers bar Age.
unset beresp.http.etag;
unset beresp.http.Cache-Control;
unset beresp.http.Pragma;
# Unset headers we never want someone to see on the front end
unset beresp.http.Server;
unset beresp.http.X-Powered-By;
# Set how long the client should keep the item by default
set beresp.http.cache-control = "max-age = 300";
# Set how long the client should keep the item by default
set beresp.http.cache-control = "max-age = 300";
# Override browsers to keep styling and dynamics for longer
if (bereq.url ~ ".minify.*\.(css|js).*") { set beresp.http.cache-control = "max-age = 604800"; }
if (bereq.url ~ "\.(css|js).*") { set beresp.http.cache-control = "max-age = 604800"; }
# Override the browsers to cache longer for images than for main content
if (bereq.url ~ ".(xml|gif|jpg|jpeg|swf|css|js|png|zip|ico|img|wmf|txt)$") {
set beresp.http.cache-control = "max-age = 604800";
}
# We're done here, send the data to the browser
return (deliver);
}
sub vcl_deliver {
# Happens when we have all the pieces we need, and are about to send the
# response to the client.
#
# You can do accounting or modifying the final object here.
# Lets not tell the world we are using Varnish in the same principle we set server_tokens off in Nginx
unset resp.http.Via;
unset resp.http.X-Varnish;
}
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