Biztalk Xslt Interview Question:

Please explain what is BizTalk Pub-Sub architecture?

Submitted by: Muhammad

Fundamental to BizTalk is the Publish / Subscribe Architecture. This architecture basically comprises of 2 main components. First of all, a publisher, who would be responsible to publish the message in the message store. And secondly, a subscriber, who will subscribe to messages of a particular format so that he gets them whenever they are published.

Publishing refers to the process of inserting the messages in the message box database. Normally, a receive port, an orchestration or solicit send port would be involved in publishing any message to the message box. A receive port would receive the message from the pipeline and publish it to the message box for an orchestration or a send port to pick up.

An orchestration would publish the message usually while sending it using the send shape. A solicit response port would actually publish the message when it receives a response from the end system.

The subscribers would indicate the message they would like to receive by a set of criteria or filters.
Thereby, whenever a message is posted or published to the message box database, a subscriber will be able to get the message based on the filters or criteria mentioned while subscribing. The filters can be specified only on the promoted fields on the message.
Submitted by: Muhammad