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Event-Driven Programming

Gigi Sayfan explains the idea of event-driven programming:

Event-driven programming is a great approach for building complex systems. It embodies the divide-and-conquer principle while allowing you to continue using other approaches like synchronous calls.

When discussing event-based systems, several different terms often refer to the same concept. For simplicity, we’ll primarily use the terms listed below in bold:

Event, message, and notification

Producer, publisher, sender, and event source

Consumer, receiver, subscriber, handler, and event sink

Message queue and event queue

I really like the ideas behind event-driven programming. It’s most commonly useful when working with cloud services, but also in solving some difficult T-SQL problems.