AWD Event Sourcing library

This is a PHP library designed to simplify the implementation of Event Sourcing patterns in your applications. It provides a robust set of tools and abstractions to manage aggregates, events, event storage, and snapshots, enabling you to build scalable, maintainable, and auditable systems.

What is Event Sourcing?

Event Sourcing is a design pattern where changes to an application's state are captured as a sequence of events. Instead of storing only the current state, the application maintains a history of all events that have occurred. This approach offers several advantages, including:

• Auditability: Every state change is recorded, providing a complete history.
• Scalability: Events can be processed asynchronously or in parallel.
• Reconstructability: Past states can be rebuilt by replaying events.

Features

• Aggregates: Manage domain entities with built-in support for event sourcing.
• Events: Define and handle domain events easily.
• Event Store: Persist and retrieve events from a configurable storage backend.
• Repositories: Simplify loading and saving aggregates.
• Snapshots: Optimize performance by storing snapshots of aggregate states.

Installation

You can install ES Lib via Composer:

composer install awd-studio/es-lib

Usage

Se the example section.

Integration

To use the library in your projects, you need to implement such interfaces:

# Storage / DB layer

## Reading
\AwdEs\Event\Storage\Fetcher\EventFetcher::class
\AwdEs\Event\Storage\Fetcher\Handling\CriteriaHandlingCase::class

## Writing
\AwdEs\Event\Storage\Recorder\EventRecorder::class


# Metadata

## Applying
\AwdEs\Event\Applying\EventApplier::class

## Reading metadata
\AwdEs\Event\Handling\EventHandlerMethodResolver::class
\AwdEs\Meta\Event\EventMetadataResolver::class

License

This library is licensed under the MIT License. See the LICENSE file for details.