Event-Driven Architecture
Updated 2026-08-10
INTRODUCTION
English translation pending.
CORE DEFINITION
The components of a system communicate asynchronously through events, and what happened, the event, matters more than what to do, the command. As a scaffold it is loose coupling and high responsiveness: a component does not need to know who will handle the event, it only publishes, and the decoupling follows. It unites the earlier names of event-driven scheduling and the event-driven process chain.
SCAFFOLDING EFFECT
Reduce cognitive load
- Event spot: name the key state changes in the system that are worth announcing. - Schema fix: define exactly what each event carries, before anyone publishes it. - Publish then subscribe: let producers emit events and consumers subscribe to them, never the reverse.
Anchor fast decisions
Components communicate asynchronously through events, facts that have already happened, with producers publishing and consumers subscribing. The coupling stays loose because components do not know each other, only the event, so a new consumer can be added without touching the producer at all.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Event-driven_architectureverified
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