# Does Nginx's proxy cache support any kind of cache validation?

**URL:** <https://www.ruby-forum.com/t/does-nginxs-proxy-cache-support-any-kind-of-cache-validation/184232>\
**Category:** NGINX\
**Created:** [February 26, 2010, 11:33pm UTC](https://www.ruby-forum.com/t/does-nginxs-proxy-cache-support-any-kind-of-cache-validation/184232 "2010-02-26T23:33:45Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![travisbell](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/96bed5/32.png) [@travisbell](https://www.ruby-forum.com/u/travisbell)\
**Post date:** [February 26, 2010, 11:33pm UTC](https://www.ruby-forum.com/t/does-nginxs-proxy-cache-support-any-kind-of-cache-validation/184232/1 "2010-02-26T23:33:45Z")

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Hey guys,

I have been playing with proxy cache, works well enough except for one  
issue.

My pages are localized (but use the same standard URL) and with other  
systems I can use either the vary or etag header to notify the cache of  
either updated content or simply a different version to serve. Nginx  
doesn’t seem to be paying any attention to the etag so is this possible  
to with Nginx right now in any capacity?

Posted at Nginx Forum:

> **[Does Nginx's proxy cache support any kind of cache validation?](https://forum.nginx.org/read.php?2,57772,57772#msg-57772)**
>
> Hey guys, I have been playing with proxy cache, works well enough except for one issue. My pages are localized (but use the same standard URL) and with other systems I can use either the vary or etag header to notify the cache of either updated...