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Posted to users@tomcat.apache.org by swati jain <sw...@yahoo.com.INVALID> on 2016/08/11 06:16:37 UTC
Tomcat 8.5.4 making sessions when used with NIO connector
Tomcat Version - 8.5.4 ( Embedded)
Platform - Linux
When NIO connector is used with Embedded Tomcat, it creates a session per request. The session lasts for 30 minutes. Is there a way to configure connector in such a way that no session is created. I have traffic of around 40000 requests per second. All the requests are state less. so each of them create a session. After 10 minutes, the Tomcat stops taking any further requests and when I viewed the heap dump, it says there is a concurrent map which has many objects of sessions.
While using Tomcat 6.0.36,. no sessions were created per request. After migration to Tomcat 8.5.4, this problem has started.
Please suggest.
BR,Swati
Re: Tomcat 8.5.4 making sessions when used with NIO connector
Posted by Christopher Schultz <ch...@christopherschultz.net>.
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Swati,
On 8/11/16 2:16 AM, swati jain wrote:
> Tomcat Version - 8.5.4 ( Embedded) Platform - Linux
>
> When NIO connector is used with Embedded Tomcat, it creates a
> session per request. The session lasts for 30 minutes. Is there a
> way to configure connector in such a way that no session is
> created.
The connectors don't create sessions, so this is unlikely to do with
the choice of connector. What happens if you try the APR or NIO2
connectors and repeat your tests?
> I have traffic of around 40000 requests per second. All the
> requests are state less. so each of them create a session. After 10
> minutes, the Tomcat stops taking any further requests and when I
> viewed the heap dump, it says there is a concurrent map which has
> many objects of sessions.
Are you able to instrument the server at all, or observe this in a
test environment? It's easy to attach a HttpServletListener and dump
stack traces to reveal the places where the sessions are being created.
> While using Tomcat 6.0.36,. no sessions were created per request.
> After migration to Tomcat 8.5.4, this problem has started.
What components are involved, here? Specifically, are you using JSP or
anything that is known for surprisingly-creating sessions?
- -chris
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