What is the “delivery mode” in AMQP?

Question

I understand that 2 options are available:

• \"Non-persistent\"
• \"Persistent\"

But what does this actually mean?

\"Non-persistent\"

Answer 1

Messages marked as 'persistent' that are delivered to 'durable' queues will be logged to disk. Durable queues are recovered in the event of a crash, along with any persistent messages they stored prior to the crash.