# Header expiry on google charts and amazon s3

**URL:** <https://www.ruby-forum.com/t/header-expiry-on-google-charts-and-amazon-s3/161407>\
**Category:** Rails\
**Created:** [February 26, 2009, 9:16am UTC](https://www.ruby-forum.com/t/header-expiry-on-google-charts-and-amazon-s3/161407 "2009-02-26T09:16:57Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![ankitparekh](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/d9b06d/32.png) [@ankitparekh](https://www.ruby-forum.com/u/ankitparekh)\
**Post date:** [February 26, 2009, 9:16am UTC](https://www.ruby-forum.com/t/header-expiry-on-google-charts-and-amazon-s3/161407/1 "2009-02-26T09:16:57Z")

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Hey all

I am using google charts in my app and even Amazon s3. So i m getting  
some jpg component from these sites…

can ne one tell me how to set header expiry for those components that r  
coming from other servers like google charts and amazon.

i m using nginx server.

thanks