Understanding Event-Driven Design Pattern in Microservices with Java

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Today, We will go through an Overview of Understanding Event-Driven Design Pattern in Microservices with Java and the benefits it brings to Application Developers.

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Introduction:
Event Sourcing: Event Sourcing is a crucial concept in the context of CQRS and Event-Driven Design (EDD). In traditional systems, the state of an application is typically stored in a database, and changes to the state are recorded as updates. However, in event sourcing, the state of an application is derived from a series of events.

Events represent meaningful occurrences or transactions that happen within the system. Each event captures the details of a specific action or state change, such as user registrations, orders placed, or inventory updates. These events are immutable and are stored in an event log.

By replaying the events sequentially, the application can reconstruct the state of the system at any given point in time. This event-centric approach provides a comprehensive audit trail, enables temporal querying, and facilitates the implementation of features like event replay, time-travel debugging, and undo/redo functionality.