Tips for a successful MSMQ-enabled application

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Published Monday, August 22, 2005 4:02 AM by RoyOsherove
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Comments

Monday, August 22, 2005 6:34 AM by ilan

# re: Tips for a successful MSMQ-enabled application

Oops, sorry, I sent the previous message before I finished it by mistake.
Let's recapitulate:

Well, what I'm about to detail is not really a problem, but something you should be aware of.
If you read the messages from the Q using BeginReceive, you may end up receiving one more message than you intended. Imagine you are using the following scheme:
void init()
{
queue.ReceiveCompleted += new ReceiveCompletedEventHandler(receiveCompleted);
queue.BeginReceive();
}
void receiveCompleted(object sender, ReceiveCompletedEventArgs e)
{
MessageQueue sourceQueue = sender as MessageQueue;
Message msg = sourceQueue.EndReceive(e.AsyncResult);
// Do something with the message
sourceQueue.BeginReceive();
}
void stopReceivingMessages()
{
queue.ReceiveCompleted -= new ReceiveCompletedEventHandler(receiveCompleted);
}
Well, after the call to stopReceivingMessages() there is still one message you will get (unless you close the Q of course)...
Tuesday, August 23, 2005 11:54 PM by John Cavnar-Johnson

# re: Tips for a successful MSMQ-enabled application

There's an important principle to follow in developing MSMQ applications: Send to remote queues, receive from local queues.
Monday, September 12, 2005 2:02 AM by Dilip M

# re: Tips for a successful MSMQ-enabled application

Unfortunately, the 'receive from local queues' is not always possible. We are building a smart client app with the users being disconnected most of the time.
And we don't want to use AD for routing so I don't see any options but to use remote queues for reads. If there is any better way to approach this, I'd be interested to know.
Also curious as to whether it makes a significant difference in having multiple (not shared by huge # of users) queues or one queue where all remote users peek and pull off messages.
Friday, December 08, 2006 2:29 PM by Marcus

# re: Tips for a successful MSMQ-enabled application

"Anonymous Logon" role!!! Thanks Roy...