In this tutorial, we’ll show you a simple way to manage caching based on the value of a request cookie. Using the example below, we’ll prevent caching of requests with cookies named as either: “wp” or “wordpress” or “comment”.
The EdgeRules feature is available only on Enterprise plans.
EdgeRules configuration
Here’s how to set it up using EdgeRules in the MaxCDN Control Panel:
Nginx Configuration Block
location / {
set $tmp "0";
if ($http_cookie ~* (wp|wordpress|comment)) {
set $tmp "1";
}
proxy_no_cache $tmp;
}
CURL Test Without Cookie
$ curl -I gbgcl13.netdnasa2.netdna-cdn.com/
HTTP/1.1 200 OK
Date: Wed, 23 Sep 2015 19:21:43 GMT
Content-Type: text/html
Content-Length: 935
Last-Modified: Thu, 06 Aug 2015 12:32:59 GMT
Cache-Control: public, must-revalidate, proxy-revalidate
Server: NetDNA-cache/2.2
X-Cache: HIT
Accept-Ranges: bytes
CURL Test With Proper Cookie in Request
$ curl -I gbgcl13.netdnasa2.netdna-cdn.com/ -b "random=value"
HTTP/1.1 200 OK
Date: Wed, 23 Sep 2015 19:22:47 GMT
Content-Type: text/html
Content-Length: 935
Last-Modified: Thu, 06 Aug 2015 12:32:59 GMT
Cache-Control: public, must-revalidate, proxy-revalidate
Server: NetDNA-cache/2.2
X-Cache: MISS
Accept-Ranges: bytes
If you have any questions or experience any issues, please reach out to the Support Team, live chat and ticket support are available 24/7.