varnish caching with jsessionid being set

Rodney Bizzell rbizzell at
Wed Mar 22 17:19:09 CET 2017

Can you also add the set beresp.grace parameter as well right after the ttl
From: at [ at] On Behalf Of Guillaume Quintard
Sent: Wednesday, March 22, 2017 11:29 AM
To: Jim Louis <jlouis at>
Cc: varnish-misc <varnish-misc at>
Subject: Re: varnish caching with jsessionid being set

Sure, you can override them:

set vcl_backend_response {
    set beresp.ttl = 5m;

Guillaume Quintard

On Tue, Mar 21, 2017 at 4:11 PM, Jim Louis <jlouis at<mailto:jlouis at>> wrote:

Supposedly, nginx has the ability to ignore the caching headers. Does Varnish provide a similar mechanism?


On Mon, Mar 20, 2017 at 3:09 AM, Dridi Boukelmoune <dridi at<mailto:dridi at>> wrote:
On Fri, Mar 17, 2017 at 8:46 PM, Jim Louis <jlouis at<mailto:jlouis at>> wrote:
> Dridi,
> I must not be understanding your example on [2] as I'm still getting everything passed.

Hi Jim,

Thanks for letting me know, I will try to clarify this part.

> The BereqHeader in varnishlog -b shows:
> BereqHeader    Cookie: JSESSIONID=4A1158EB11C9E93D6AD2A101BB9FA204; pfmhelp=1; _ga=GA1.2.1694534677.1489779146; TrackJS=f2465051-cb66-4cfa-8a47-5c7a5d07aab4; navigation=520533110%7C4130
> and I'm seeing:
> BerespHeader   Cache-Control: no-cache, no-store, must-revalidate
> BerespHeader   Pragma: no-cache

The backend is telling Varnish, and ultimately the client, that the
response cannot be cached. Depending on your version of Varnish
it will indeed result in subsequent passed transaction.

> Also, was there a part 2 to that blog?

Part 2 is written, but still an early draft so not published yet.


James Louis
Lead Systems Engineer

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