CODEWITHSUNDEEP
ibm-mq
scarpacci
scarpacci

Reputation: 9194

Ensure durability with messages when using WCF

I am wondering how we can ensure message durability when using websphere MQ and WCF. I want to be able to have my WCF process pick messages off of the queue and if there is an issue that the applciation encounters (power outage, etc) I don't lose the messages. I also would like to not have to use a transaction if at all possible because I want to eliminate distributed transactions.

Thanks,

S

Upvotes: 2

Views: 371

Answers (2)

Shashi
Shashi

Reputation: 15273

WebSphere MQ WCF custom channel has a feature "Assured Delivery" that guarantees that a service request or reply is actioned and not lost. This is the 1-phase commit (also known as SYNC_POINT in) WMQ.

"Assuered Delivery" is a service contract attribute. Here are more details about the feature.

Upvotes: 2

T.Rob
T.Rob

Reputation: 31832

Well, there's transactions and there's distributed transactions. The "right" answer is to use the WMQ 1-phase commit here. That doesn't have the complexity of XA transactions but it does give you the ability to roll back a message without losing it. In fact, when using clients you really should be using at least 1-phase commit just to prevent loss of messages.

Short of that there is always the "browse-with-lock, delete-message-under-cursor" method. I'm pretty sure everything you need to do the browseing, locking and deleting is exposed under .NET but perhaps Shashi will comment and confirm.

Upvotes: 2

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