section.io VCL - Performance Config

performanceConfig.vcl

#section.io VCL sample. Copy paste into your section.io account to implement instantly
 
#vcl_recv - copy this code into the section called sub vcl_recv
if (req.http.Accept-Encoding) {
	if (req.http.Accept-Encoding ~ "gzip") {
		set req.http.Accept-Encoding = "gzip";
	} else if (req.http.Accept-Encoding ~ "deflate") {
		set req.http.Accept-Encoding = "deflate";
	} else {
		unset req.http.Accept-Encoding;
	}
}

if (req.url ~ ".*\.(?:css|js|jpe?g|png|gif|ico|swf)(?=\?|&|$)") {
	unset req.http.Cookie;
	#Varnish <= 3.x calls this "return (lookup);" instead of "return (hash);"
	return (hash);
}
 
#vcl_backend_response - copy this code into the section called sub vcl_backend_response
#Varnish <= 3.x calls this "vcl_fetch" instead of "vcl_backend_response"
if (beresp.status < 400){
	if (bereq.url ~ ".*\.(?:css|js|jpe?g|png|gif|ico|swf)(?=\?|&|$)") {
		set beresp.ttl = 28800s; #The number of seconds to cache inside Varnish
		set beresp.http.Cache-Control = "max-age=28800"; #The number of seconds to cache in browser
	}
}

#vcl_deliver - copy this code into the section called sub vcl_deliver
if (resp.http.x-varnish ~ " ") {
    set resp.http.X-Cache = "HIT";
} else {
    set resp.http.X-Cache = "MISS";
}

Adjust config to be V4 centric with V3.X comments