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POHeroku & Rails - Varnish HTTP Cache Not Working
 

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  1. POHeroku & Rails - Varnish HTTP Cache Not Working
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    <p>My heroku website's root page is essentially static, it has some ruby code in the view when its generated, but there's nothing specific to a single user, so I'd like to have it cached by Varnish and served up without hitting my dyno (note that there are other pages that are dynamic in the application).</p> <p>Heroku makes it seem very simple <a href="http://devcenter.heroku.com/articles/http-caching" rel="nofollow">here</a>. Just add <code>response.headers['Cache-Control'] = 'public, max-age=300'</code> and it'll cache for 5 minutes before regenerating.</p> <p>To test this I made the changed and outputted the date (<code>Time.now</code>) to the page, to see if it would remain the same for 5 minutes, but every time I access the page on a new browser it updates. Refreshing on the same browser works fine, but I think that's because of the browser caching, not Heroku.</p> <p>If it's any help, when I do a curl -i to get the HTTP headers, I get this:</p> <pre><code>HTTP/1.1 200 OK^M Server: nginx/0.7.67^M Date: Thu, 29 Dec 2011 02:03:33 GMT^M Content-Type: text/html; charset=utf-8^M Connection: keep-alive^M Cache-Control: public, max-age=300^M X-Ua-Compatible: IE=Edge^M Etag: "8a1b58f048968803980417a2914764d0"^M X-Runtime: 0.038393^M Content-Length: 8310^M X-Varnish: 1040651825^M Age: 0^M Via: 1.1 varnish^M </code></pre> <p>Basically, I'd like to make sure that it's generated once and then cached in Varnish, am I missing any options, do I have to configure something more? If you have other suggestions for serving a fast static page I'd love those as well.</p> <p>Thanks!</p>
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    1. COAlso note that I do have an authentication system which may add some before_filters, but they don't have an effect on the output of the main page.
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    2. COCan I just confirm you're running on the Aspen or Bamboo stack?
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    3. COYep, not on Cedar.
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