POST requests to ESIs

James Sansbury james.sansbury at
Wed Jan 12 22:49:50 CET 2011

On Wed, Jan 12, 2011 at 4:03 PM, Caunter, Stefan <scaunter at>wrote:
> On Wed, Jan 12, 2011 at 1:39 PM, Caunter, Stefan <scaunter at>
> wrote:
> Even on heavily commented sites, the number of POSTs for new comments will
> be low per second. Issue always seems to be pulling comments for each page
> load. Loading comments with a GET, with a ttl > 0 seems to work well for us
> (no ESI). Is there a reason you are running with TTL at zero?
> Yeah, sorry, it was not so much about the TTL as the ability to still
> lookup the cached page and pass the POST through to the ESI. I understand we
> can increase the TTL of the ESI, but the real goal here is to have a
> separate ESI only server that handles all authenticated traffic, while
> keeping the frontend server served completely from the Varnish cache.
> Ah yes. Consider a subdomain. We pipe for cases like this.

Can you describe a bit more what you mean? We have our frontend site,, which has ESIs pointing to (ugc == user
generated content). If you pipe in vcl_recv, ESIs are not processed. Maybe
I'm missing something. :)


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