Is anyone using ESI with a lot of traffic?

Patricio A. Bruna pbruna at
Fri Feb 27 22:24:56 CET 2009

It would be great to know those parameters and why ?

Enviado usando Zimbra BlackBerry Conector

----- Mensaje original -----
De: varnish-dev-bounces at 
<varnish-dev-bounces at>
Para: Cloude Porteus <cloude at>
CC: varnish-dev at <varnish-dev at>
Enviado: Fri Feb 27 18:12:51 2009
Asunto: Re: Is anyone using ESI with a lot of traffic?

On Feb 27, 2009, at 1:06 PM, Cloude Porteus wrote:

> We're going to start implementing some ESI tests within Varnish. I'm
> curious what the performance hit is going to be. I would imagine we'll
> have 6-10 ESI statements in our pages.

We're using ESI on under fairly high load.  ESI
works well, and we use it to defeat the cache-busting parameters that
jQuery requests send our way.

I don't have much time to assist you, but I could certainly post some
of our startup parameters (which took a fair amount of time to figure
out) and give you reasons why we made the decisions we did.


John Adams
Twitter Operations
jna at

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