I do not know of any specific MDB perfomance issues. Can you elaborate ? Also, technically, if the message has been sent to a queue, and you have somehow persisted or "remembered" any uniquer attributes of the message (like mesage ID for example), you could use a queue browser to remove the message before it is processed. However, I would imaguine it unlikely that you would be able to grab the message before it was processed if you do have decent performance.
In general, I am in the same mind as Chan. You should cancel undesired asych requests before they are sent. It is a difficult proposal to cancel any sort of asynch request without going out of band. //Nicholas --- Chan Philip <[EMAIL PROTECTED]> wrote: > The Request should has been cancelled before, not > after, it is sent. > > -----Urspr�ngliche Nachricht----- > Von: Alvin Wang [mailto:[EMAIL PROTECTED]] > Gesendet: Montag, 18. M�rz 2002 19:52 > An: [EMAIL PROTECTED] > Betreff: Re: [EJB-INT] Is MDB the best choice for > asynchronous request > handling in EJB? > > > For example, I cannot cancel a request in the queue, > and the performance > issue... > > -----Original Message----- > From: A mailing list for Enterprise JavaBeans > development > [mailto:[EMAIL PROTECTED]]On Behalf Of Johan > Eltes > Sent: Monday, March 18, 2002 12:57 PM > To: [EMAIL PROTECTED] > Subject: Re: Is MDB the best choice for asynchronous > request handling in > EJB? > > > What kind of limitations are you experiencing? > > /Johan > > -----Original Message----- > From: A mailing list for Enterprise JavaBeans > development > [mailto:[EMAIL PROTECTED]]On Behalf Of Alvin > Wang > Sent: den 18 mars 2002 16:41 > To: [EMAIL PROTECTED] > Subject: Is MDB the best choice for asynchronous > request handling in EJB? > > Hi! We need to do some asynchronous request handling > work in EJB. For > example, the user sunmits a request and quits, and > later he comes back and > check the status/result of his request. Currently we > are using MDB to do > this. However, we feel that there are some > limitations in MDB and JMS. Is > MDB the most natural way to handle asynchronous > request in EJB? Can any guru > give us some alternative design strategies? Thanks! > > Alvin > > ==========================================================================To > unsubscribe, send email to [EMAIL PROTECTED] and > include in the body > of the message "signoff EJB-INTEREST". For general > help, send email to > [EMAIL PROTECTED] and include in the body of the > message "help". > ===== Nicholas Whitehead Home: (973) 377 9335 Cell: (201) 615 2716 Work: (212) 235 5783 [EMAIL PROTECTED] __________________________________________________ Do You Yahoo!? Yahoo! Sports - live college hoops coverage http://sports.yahoo.com/ =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff EJB-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
