Cache tag support [#1394462]

The attached patch adds support for cache tags (http://drupal.org/project/cachetags), which adds the tags in a custom header that varnish can invalidate against. THis is based on dixon's work here, but uses PURGE instead of the admin socket: http://drupal.org/node/1341322.

Because an extra header needs to be passed in, I added a headers parameter in purge_urls, keyed off the urls in the previous argument.

This patch also removes the dependency on expires. From what I could tell, the only reason it was necessary was for expires_print_r, so I copied a version of that function in.

Comment	File	Size	Author
	purge-cachetags.patch	4.41 KB	msonnabaum

Comments

Comment #1

msonnabaum commented 4 January 2012 at 23:58

Also, to get this to work you'd need something like the following in your vcl:

  if (req.request == "PURGE") {
    if (req.http.X-Cache-Tags) {
      purge("req.http.host == " req.http.host " && obj.http.X-Cache-Tags ~ " req.http.X-Cache-Tags);
      error 200 "Purged.";
    }
    return(lookup);
  }

Comment #2

SqyD commented 18 March 2012 at 20:32

Version:

7.x-1.x-dev

» 7.x-2.x-dev

Comment #3

SqyD commented 22 October 2012 at 14:24

Is anyone still interested in getting this into the 2.x branch?
The rewrite I'm doing will make adding this functionality a lot easier. May not make it into make it an initial 2.0 release but still seems interesting to implement.
Expire dependency will be dropped as well for 2.x

Comment #4

SqyD commented 15 January 2013 at 03:59

Status:

Needs review

» Postponed (maintainer needs more info)

please respond if there is interest in this and I will (scouts honor) look into this for 2.x

Comment #5

SqyD commented 21 January 2013 at 02:11

Okay, I bumped into Moshe W. this week and he mentioned Cache tags... That for sure counts as interest from the community so I will try to get this into the 2.x branch at some point in the near future.