On Mon, 21 Feb 2011 16:52:48 -0200, N3O wrote:
Hi I'm planning to install a reverse proxy server with squid but one of the requisites is that it should have ESI support. Questions Does squid have ESI support? is it good?
Yes, in Squid-3. It works pretty well in 3.1+, 3.0 works in a dedicated binary but does not interact nicely with several other proxy features.
The initial sponsors saw the core parts of the protocol to completion, so that all works great with only an occasional bug. But some of the more complex pieces are not supported and/or noticeably buggy. The squid bugzilla has the list of known issues.
How do i configure ESI support in squid??
Depends on your version. Ensure that --enable-esi is built in with XML libraries. Once that is done Squid will auto-magically start advertising the relevant Surrogate-Capabilities to the origins. The server response type determines whether it is processed or not.
Are there any links to examples or tutorials of ESI configuration in squid??
Very few unfortunately certainly nothing comprehensive. W3C specs have some good examples. http://www.w3.org/TR/esi-lang. But like HTML, the devil is in the details of how you structure the XML tags in the ESI page object and what caching controls you place on the raw original objects.
Wikipedia has a list of common tools like Drupal and Zope which you can use to play with it
http://en.wikipedia.org/wiki/Edge_Side_Includes Amos
