java-design-patterns/event-driven-architecture/index.md

layout: pattern title: Event Driven Architecture folder: event-driven-architecture permalink: /patterns/event-driven-architecture

Intent: Send and notify state changes of your objects to other applications using an Event-driven Architecture.

Applicability: Use an Event-driven architecture when

• you want to create a loosely coupled system
• you want to build a more responsive system
• you want a system that is easier to extend

Real world examples:

• A Loan Application has been accepted/rejected (Commercial Business).
• A new Rostering Schedule is ready for distribution to all crew (Airline Management System).
• An Illegal Trade Pattern has been detected (Trading Fraud Detection System).
• A simulated car has hits another simulated car (Commercial Racing Game).
• A robot has reached its destination (Real Time Warehouse Management System).
• A HTML message has been received (Web Server).
• A key has been pressed (Text Editor).

Credits:

• Event-driven architecture - Wikipedia
• Fundamental Components of an Event-Driven Architecture
• Real World Applications/Event Driven Applications
• Event-driven architecture definition