Suggestion: right before you lock on the session, check if it
is currently in mid-processing. If so, call Thread.interrupt() on it or
signal interruption in some other manner, *then* lock on the session.
The benefit here is that if a user hits REFRESH multiple times quickly,
we don't fall behind trying to render pages when they have been
aborted.
I know how to implement this easily under JDK 1.5 (using
java.util.concurrent.Lock) but I'm not sure how you could do it using
older JDKs... Still, I think it is a great idea and would give Wicket a
huge advantage over other frameworks from a scalability point of view.
Gili
On Wed, 05 Jan 2005 16:26:50 +0100, Eelco Hillenius wrote:
>It works different. Johan synchronizes on the session, so two users have
>their requests executed without this. The problem occured when one user
>(one session) refreshed quickly.
>
>So, as the synchronizations happens for a session, the scalability is
>not reduced.
>
>Eelco
>
>Gili wrote:
>
>>On Wed, 5 Jan 2005 15:17:59 +0100, Juergen Donnerstag wrote:
>>
>>
>>
>>>Hi Eelco,
>>>
>>>
>>>
>>>>Syncronized around session object in HandleRender so that only one request
>>>>can touch/render a page and its components.
>>>>
>>>>
>>>I think I understand the change, but is there a possibility that it
>>>could ever happen and thus requires synchronization?
>>>
>>>
>>
>> It can if two users hit a Page at the same time (I think).
>>Thing is, I think that synchronizing Page rendering by default isn't
>>necessarily a good thing. It simplifies things but it'll also reduce
>>the scalability of Wicket.
>>
>>Gili
>>
>>
>>
>
>
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