Can I cache a page conditionally based on cookie value?

Server NGINX
1

Hi,

Using NginX as a reverse proxy, I want to cache the response ONLY if the
user has NOT logged in, which can be checked by testing the existence of
a
cookie.

First I tried to use “if”, but NginX complained that I cannot put a
proxy_cache_valid inside an “if”:

location / {
proxy_pass http://www.xyz.com;
if ($cookie_login = ‘’) {
proxy_cache my-cache;
proxy_cache_valid 200 301 302 60m;
}
}

Then I tried to set the cache-duration to 0s by using a variable, but
then
NginX complained the time value is incorrect.
set $cacheDuration 60m;
if ($cookie_login != ‘’) {
set $cacheDuration 0s;
}

proxy_cache my-cache;
proxy_cache_valid 200 301 302 $cacheDuration

So is there any way to cache conditionally based on the existence of a
cookie?

Thanks.

  • Patrick

Posted at Nginx Forum:

2

Maxim, that’s what I need. Thanks a lot!

Posted at Nginx Forum:

3

Hello!

On Tue, May 14, 2013 at 09:23:08PM -0400, patng323 wrote:

proxy_pass http://www.xyz.com;
if ($cookie_login != ‘’) {
set $cacheDuration 0s;
}

proxy_cache my-cache;
proxy_cache_valid 200 301 302 $cacheDuration

So is there any way to cache conditionally based on the existence of a
cookie?

Something like

proxy_no_cache $cookie_login;

should do the trick. See Module ngx_http_proxy_module for
details.

–
Maxim D.
http://nginx.org/en/donation.html