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From <>
Subject AW: Web Service Synchronization
Date Tue, 25 Aug 2009 12:11:00 GMT
Hi all,

What I exactly mean is the concurrency control in the web service. I have a web service where
users write information that they store in a list, and this list could be very large, that
is why I see if I do not control the concurrence to this web method, some information could
be stored in the profile of one users and the other in the profile of the other user, but
the list should be stored in the profile of the right user, without concurrence control it
could happen that the information is stored for the incorrect user. The solution proposed
by Glen could work (locking the data base), however every entry in the list is independent
that is why I was thinking that controlling the concurrency in the web method could be a better
solution. Is there a better approach?

Thanks in advance,

-Diego Vera

-----Urspr√ľngliche Nachricht-----
Von: Benson Margulies [] 
Gesendet: Dienstag, 25. August 2009 13:57
Betreff: Re: Web Service Synchronization

Let's be a bit more specific. Are you concerned with the reentrancy of your implementation
or of the client stubs?

On Tue, Aug 25, 2009 at 7:17 AM, Glen Mazza<> wrote:
> Synchronous/Asynchronous has a different meaning with web services, 
> but using your standard definition of synchronous, I can't imagine web 
> methods being synchronized by default, because that would slow down 
> read-only web methods such as getCapitalOfBritain that don't require 
> synchronization.  I'm unsure how the lack of synchronization would 
> prevent you from logging who accesses your web service, and for 
> writable web services that access a database, I would first check to 
> make sure that the database would not take care of the synchronization 
> for you anyway (i.e., some databases lock during 
> insert/updates/deletes, not allowing other calls to proceed until 
> finished.)
> HTH,
> Glen
> diego.vera wrote:
>> Hi all,
>> I got a question about cxf web services. I require synchronization in 
>> the web methods since the users that are calling them should be 
>> logged and of couse is important that a web method call fnish before 
>> another user calls the same method. The question is: are by default 
>> the call of the web methods synchonized? Or should I synchronize the access?
>> Thanks a lot,
>> -Diego Vera
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