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Posted to dev@tomcat.apache.org by Mark Thomas <ma...@apache.org> on 2014/03/26 12:18:50 UTC
[ANN] ApacheCon NA 2013 Tomcat presentation videos available
All,
Most (all?) of the presentations from ApacheCon NA 2013 are now
available on YouTube. To help you to navigate to the Tomcat
presentations we have created this page:
http://tomcat.apache.org/presentations.html
As well as the videos, links to the slides for a number of other
presentations are also listed.
We'll add the ApacheCon 2014 links as soon as they are available.
If there are other Tomcat videos, audio recordings, slide-decks etc. you
think might be useful to add to that page, do speak up.
Mark
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Re: [ANN] ApacheCon NA 2013 Tomcat presentation videos available
Posted by Mark Thomas <ma...@apache.org>.
On 26/03/2014 14:08, Rémy Maucherat wrote:
> 2014-03-26 14:52 GMT+01:00 Mark Thomas <ma...@apache.org>:
>
>> Yes, it is a solvable problem as long as you drop the self-imposed
>> requirement to run on top of the Servlet API. Now the difficulties are
>> understood, I'm beginning to think about dropping that requirement and
>> using some of the Tomcat internals directly. The blocking/non-blocking
>> gets a whole lot easier very quickly if you do that.
>>
> Ok. I don't think it would make much difference in the container code
> since the upgrade mode is light already and all it needs is to pass down a
> "block" flag, but your websocket impl would be able to shed its simulated
> blocking.
I agree completely. I'm becoming less convinced that benefit of running
on any container is worth the price of the complexity that the simulated
blocking introduced.
Mark
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Re: [ANN] ApacheCon NA 2013 Tomcat presentation videos available
Posted by Rémy Maucherat <re...@apache.org>.
2014-03-26 14:52 GMT+01:00 Mark Thomas <ma...@apache.org>:
> Yes, it is a solvable problem as long as you drop the self-imposed
> requirement to run on top of the Servlet API. Now the difficulties are
> understood, I'm beginning to think about dropping that requirement and
> using some of the Tomcat internals directly. The blocking/non-blocking
> gets a whole lot easier very quickly if you do that.
>
> Ok. I don't think it would make much difference in the container code
since the upgrade mode is light already and all it needs is to pass down a
"block" flag, but your websocket impl would be able to shed its simulated
blocking.
Rémy
Re: [ANN] ApacheCon NA 2013 Tomcat presentation videos available
Posted by Mark Thomas <ma...@apache.org>.
On 26/03/2014 13:22, Rémy Maucherat wrote:
> 2014-03-26 12:18 GMT+01:00 Mark Thomas <ma...@apache.org>:
>
>> All,
>>
>> Most (all?) of the presentations from ApacheCon NA 2013 are now
>> available on YouTube. To help you to navigate to the Tomcat
>> presentations we have created this page:
>> http://tomcat.apache.org/presentations.html
>>
>> Nice, I just went and read them.
>
> In the most recent presentation, one quick comment on the problem areas of
> Websockets on Servlets. Actually, I found after the EG discussion that
> autoblocking works fine as a solution with no deadlock, if it is really an
> internal autoblocking mechanism (like the semaphore use in NIO2). It is not
> perfect though, the timeout is different.
Yes, it is a solvable problem as long as you drop the self-imposed
requirement to run on top of the Servlet API. Now the difficulties are
understood, I'm beginning to think about dropping that requirement and
using some of the Tomcat internals directly. The blocking/non-blocking
gets a whole lot easier very quickly if you do that.
Mark
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@tomcat.apache.org
For additional commands, e-mail: dev-help@tomcat.apache.org
Re: [ANN] ApacheCon NA 2013 Tomcat presentation videos available
Posted by Rémy Maucherat <re...@apache.org>.
2014-03-26 12:18 GMT+01:00 Mark Thomas <ma...@apache.org>:
> All,
>
> Most (all?) of the presentations from ApacheCon NA 2013 are now
> available on YouTube. To help you to navigate to the Tomcat
> presentations we have created this page:
> http://tomcat.apache.org/presentations.html
>
> Nice, I just went and read them.
In the most recent presentation, one quick comment on the problem areas of
Websockets on Servlets. Actually, I found after the EG discussion that
autoblocking works fine as a solution with no deadlock, if it is really an
internal autoblocking mechanism (like the semaphore use in NIO2). It is not
perfect though, the timeout is different.
Rémy