Event-driven architecture

Event-driven architecture (EDA) is a design paradigm that emphasizes the production, detection, consumption, and reaction to events in a system. In the context of microservices, event-driven architecture provides a flexible and scalable approach to handle communication and coordination between services.

Here is the use case of event-driven architecture:

• Event sourcing: Storing changes to the state of an application as a sequence of events. This helps in reconstructing the current state and auditing.
• Real-time updates: Broadcasting real-time updates to multiple services or clients in response to certain events.
• Workflow orchestration: Coordinating the execution of business processes across multiple microservices.
• Log and monitoring events: Capturing events related to system logs, errors, or performance metrics for monitoring purposes.

The following are its key concepts:

• Events: Events represent occurrences or state changes...