Hands-On Design Patterns with Java

Understanding the event-driven communication design pattern

The event-driven communication design pattern is based on initiating events such as a query or node request. This event initiates communication between multiple components. The communications between system components can be managed as messages.

To manage these messages, we implement a scheduler to listen to the initiating events and then process the necessary communication via handlers. As illustrated next, the scheduler plays a critical role in the overall communication management system, so care should be taken to make sure it catches exceptions and processes them appropriately:

Event-drive communication design pattern implementation—overview

The handlers illustrated in the preceding ...