教土豆学计算机
The AMQP protocol defines a set of 14 properties that go with a message. The following are commonly used
delivery_mode: Marks a message as persistent (value of 2) or transient
content_type: Used to describe the mine-type of the encoding
reply_to: Commonly used to name a callback queue
correlation_id: Useful to correlate RPC responses with requests
Note: For a message inside Rabbit to survive a crash, the message must
Have its delivery mode option set to 2(persistent)
Be published into a durable exchange
Arrive in a durable queue
In order to make sure a message is never lost, RabbitMQ supports message acknowledgments.