I'm converting from 2.1 to 3.0. I got bit by the beresp.cacheable variable going away, and replacing it with beresp.ttl > 0s doesn't work because ttl hasn't been determined yet; it's a -1.000.<br><br>This is the block of code in question (in vcl_fetch)<br>
<br> if (!beresp.cacheable && beresp.status != 404) {<br> set beresp.http.X-Cacheable = "NO: !beresp.cacheable";<br> return (pass);<br> } else {<br> # From <a href="http://varnish-cache.org/wiki/VCLExampleLongerCaching">http://varnish-cache.org/wiki/VCLExampleLongerCaching</a><br>
/* Remove Expires from backend, it's not long enough */<br> unset beresp.http.expires;<br> }<br><br>If beresp.ttl hasn't been determined yet, what's the appropriate replacement?<br>
<br>On a related note, I was looking at the source code for 2.1. From my quick reading, it looks like beresp.cacheable is determined by request type and return status. I don't see where apache/drupal/web-server cache headers are consulted at all.<br>
<br>Am I missing something there? Are back-end cache headers to be parsed in VCL rather than being automagically determined?<br><br>TIA,<br><br>--- David<br>