Messaging
The term messaging refers to technology that lets computer systems share information without requiring either direct connections or awareness of each other's location. Messaging is also sometimes known as message-oriented middleware, or simply middleware
Messaging is analogous to postal and shipping services. Just as you would hand your letters or packages to a carrier and trust that they will get to where you want them to go, so it is with messaging—your applications hand off information to a messaging system that routes it to whatever other applications you’ve said you want it to get to.
At its most basic, messaging consists of the following:
- publisher: the entity that sends or publishes the message (also called a producer
- message: what the publisher wants to say to the subscriber. Messages often contain events, but can also carry queries, commands, and other information.
- subscriber: the ultimate receiver of the message (also called a consumer)
Messaging is analogous to postal and shipping services. Just as you would hand your letters or packages to a carrier and trust that they will get to where you want them to go, so it is with messaging—your applications hand off information to a messaging system that routes it to whatever other applications you’ve said you want it to get to.
At its most basic, messaging consists of the following:
- publisher: the entity that sends or publishes the message (also called a producer
- message: what the publisher wants to say to the subscriber. Messages often contain events, but can also carry queries, commands, and other information.
- subscriber: the ultimate receiver of the message (also called a consumer)