A framework for building event-driven applications

Event Sourcing is a software architecture pattern that captures the state of an application by recording a stream of events. These events represent the changes that have occurred to the system over time. This approach offers several advantages, including:

• Auditability and traceability: Event streams provide a complete history of the system's state, making it easy to audit changes and troubleshoot issues.
• Resilience and consistency: Event sourcing makes it possible to recover from failures and maintain data consistency across multiple replicas.
• Scalability and flexibility: Event streams can be horizontally scaled and easily adapted to changing requirements.

This framework provides the tools and abstractions for developing event-sourced applications. It includes:

• Aggregates: High-level objects that represent the core entities of the application.
• Events: Immutable snapshots of changes to aggregates.
• Event store: A persistent repository for storing events.
• Event projectors: Classes that transform event streams into different views of the system state.

In the root project folder execute the following commands:

./gradlew clean build publishToMavenLocal

Now the EvenSourcing framework is ready to be used.

The framework includes a number of examples that illustrate how to use the framework to build event-sourced applications. These examples cover a variety of use cases, including:

• Account demo: Execute tests in DefaultApplicationServiceTest in account-demo module
• Bank demo: Execute test in bank-demo module
• Minimal demo: Template application in minimal-demo module