RE: Async vs Sync processes

["Brian Lee" <brian_a_lee@hotmail.com>]

It could, but can we use JMS interally in the app server. We were trying to 
avoid setting up tons of queues to control application logic.

BAL

>From: "Siggelkow, Bill" <bill.siggelkow@mirant.com>
>To: "'Brian Lee'" <brian_a_lee@hotmail.com>, ajug-members@ajug.org
>Subject: RE: Async vs Sync processes
>Date: Thu, 14 Nov 2002 10:21:23 -0500
>
>A quick thought was that it seems like JMS could help you here.
>
>-----Original Message-----
>From: Brian Lee [mailto:brian_a_lee@hotmail.com]
>Sent: Thursday, November 14, 2002 10:14 AM
>To: ajug-members@ajug.org
>Subject: Async vs Sync processes
>
>
>I've been wondering a bit about a problem we have and I propose it to the
>group for your suggestions.
>
>I'm working on an app where we have a process that needs to be completed.
>Certain portions are asynchronous. I.e. We send off a request for an id and
>continue working on other stuff until it comes back.
>
>Now the problem I'm encountering is that we don't have a good way to 
>restart
>the process once it's gone async. The current proposal is to store state in
>the db and then have a process that polls or sweeps the db looking for 
>stati
>and reinitiating the process.
>
>Now I am against pollers for many, many reasons but can't think of a good
>way to restart the process flow after I've dropped something off async
>(because I want the whole thing to persist if my app server goes down).
>
>We're forced to use WebSphere so if there's any cool workflow apps out 
>there
>I'd love to hear about it.
>
>Semi-detail of process
>1. User Creates Order
>2.1 If valid customer id exists then send order on to fraud check
>2.2 If invalid customer id then wait for external process to update 
>customer
>id
>2.2.1 Reinitiate process once customer id comes in
>3.1 If pass fraud check then proceed
>3.2 If fail fraud check then wait for manual processing
>3.2.1 Reinitiate process once manually processed
>4. Send order to fulfillment
>
>There is some thought of having the processes that receive the async
>responses (2.2 and 3.2) reinitiate the processes manually. But if there are
>errors then we will need something that resubmits the orders after a 
>certain
>amount of time.
>
>Any thoughts or books or web sites are appreciated.
>
>Thanks,
>BAL
>
>
>
>
>
>_________________________________________________________________
>Tired of spam? Get advanced junk mail protection with MSN 8.
>http://join.msn.com/?page=features/junkmail


_________________________________________________________________
MSN 8 with e-mail virus protection service: 2 months FREE* 
http://join.msn.com/?page=features/virus