Varnish + Tomcat vs Apache + mod_cache + mod_jk +Tomcat

Adrian Ber beradrian at
Wed Oct 16 13:06:24 CEST 2013

Definitely VCL is easier to use than Apache config. And Varnish/Apache and Tomcat will be sitting on the same (cloud) machine.
Then practically I would be interested in a comparison of the overhead added by Apache vs Varnish in terms of non-cached requests.


On Wednesday, 16 October 2013, 11:54, Dridi Boukelmoune <dridi.boukelmoune at> wrote:
>I have no data to show, but since I use all three tools, I can give
>you my two cents :)
>Varnish + Tomcat is definitely the simplest architecture, because it
>does not involve AJP. I would also consider changing the default
>(blocking) http connector on the Tomcat side and measuring performance
>improvements (non blocking, native...). I'm also a big fan of the VCL
>which feels a lot more natural than httpd's configuration to me.
>As I trust Varnish not to be the bottleneck, I am not keen on adding a
>new indirection (httpd) for a binary protocol that is not relevant to
>me anymore. I believe (still no data) having a 10Gb/s connection
>between Varnish and Tomcat (I
 assume they're not sitting too far from
>each other) outperforms the compactness of AJP (serialization
>Best Regards,
>On Wed, Oct 16, 2013 at 10:54 AM, Adrian Ber <beradrian at> wrote:
>> Does anyone have some comparison data in terms of performance for using in
>> front of Tomcat either Varnish or Apache with mod_jk. I know that AJ
>> connector suppose to be faster than HTTP, but I was thinking that in
>> combination Varnish which is lighter and highly optimized could perform
>> better. There is also the discussion between static resources (which I think
>> will perform
 faster with Varnish than Apache, even with mod_cache) and
>> dynamic pages.
>> I asked this question on ServerFault too
>> Which configuration would be advisable Varnish + Tomcat or Apache +
>> mod_cache + mod_jk +Tomcat?
>> Thanks,
>> Adrian Ber.
>> _______________________________________________
>> varnish-misc mailing list
>> varnish-misc at
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