Key Concept: Best Practices for ISB - Service interaction

Below is a list of practices to be implemented when interacting with the ISB:

• Use separate connections for consumers and producers.
• Set a logical prefetch count (often 1) that reflects the number of messages the service is allowed to work on at any one time.
• Only "Acknowledge" a message after the work it has requested is accomplished. In other words, if something fails mid-process, you want the message to be re-queued and tried again.
• Only "Reject" messages if they are intrinsically un-processable.
  • Note that dependent resource availability should cause a re-queue, NOT a reject.
• Use durable queues and publisher confirms.
• Consumers and Producers are both responsible for queue creation.
• Producers are additionally responsible for routing key bindings.