# "Vary" header

**URL:** <https://www.ruby-forum.com/t/vary-header/181764>\
**Category:** Rails\
**Created:** [January 18, 2010, 1:02am UTC](https://www.ruby-forum.com/t/vary-header/181764 "2010-01-18T01:02:05Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Guilherme\_Silveira](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/e79b87/32.png) [@Guilherme\_Silveira](https://www.ruby-forum.com/u/Guilherme_Silveira)\
**Post date:** [January 18, 2010, 1:02am UTC](https://www.ruby-forum.com/t/vary-header/181764/1 "2010-01-18T01:02:05Z")

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Hello guys,

Is there anyone trying to work with content negotiation and caching  
capabilities? The Vary header needs to be implemented and I am looking  
to see if someone has already implemented support to “Vary” when  
invoking “stale?”.

Regards