Cloudfront cache-control headers missing

Question

I setup Cloudfront to serve static images, js, css files for www.lottoresults.ie. I used a custom origin server. The cloudfront domain name I setup is icdn.lottoresults.ie. I set this up using Bind9 dns, with icdn.lottoresults.ie a CNAME for the cloudfront distro. That's all fine. However, for website performance optimization (Yslow, google pagespeed etc), I want to have Cache-control and Expires headers set, and I do not want Etags. To do this, I have the following in my htaccess file for the doc_root of www.lottoresults.ie: ``` Header unset Pragma FileETag none Header unset ETag ExpiresActive on ExpiresDefault "access plus 1 year" Header set Cache-Control "max-age=1864000, public" Header unset Last-Modified ``` The problem is that for assets coming from the cloudfront distro (icdn), I have no Cache-control or Expires headers, but I do have Etags - yet for www I do have Cache-control and Expires headers, and no Eta…

Accepted Answer

I think I know what this was, for anyone else who might have same issue.

It is kind of PEBKAC - I have to invalidate the assets before they acquire new headers.

E.g. I added a new file, images/zoom2.gif, and it looks correct:

curl -I -L http://icdn.lottoresults.ie/images/zoom2.gif

```
HTTP/1.0 200 OK
Date: Fri, 06 Apr 2012 23:00:24 GMT
Server: Apache/2.2.9 (Debian) PHP/5.2.6-1+lenny13 with Suhosin-Patch
Accept-Ranges: bytes
Content-Length: 1849
Cache-Control: max-age=1864000, public
Expires: Sat, 06 Apr 2013 23:00:24 GMT
Content-Type: image/gif
Age: 29
X-Cache: Hit from cloudfront
X-Amz-Cf-Id:         vPPBdJpw0ZI_J2trHyECnE2UBeQO9NsQZD9GSvl3GIVAZuQN5lz1ZQ==,J4bBHfF5lKEpjRPLZVYpS9HUdAKEOLEe-Gy3-a_x4PsLPrdWuRg93Q==
Via: 1.0 00204466f749ba432b50dc49d604c534.cloudfront.net (CloudFront)
Connection: close
```

Cloudfront cache-control headers missing

Solution

Problem