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implement-event-sourcing

Official

Build robust event-sourced apps with Firefly.

Software Engineering#aggregate#snapshot#reactive#event-sourcing#multitenancy#event-store#firefly
Authorfireflyframework
Version1.0.0
Installs0

System Documentation

What problem does it solve?

Event sourcing captures every state change as an immutable sequence of events, enabling full audit trails, time-travel queries, and reliable projections for Firefly-based services.

Core Features & Use Cases

  • AggregateRoot pattern validates business invariants in public commands and emits events via applyChange.
  • Reactive EventStore over R2DBC with optimistic concurrency, snapshots, and a transactional outbox for reliable persistence across microservices.
  • Snapshots and Projections enable fast reads by replaying events and building read models.
  • Event Upcasting & Multi-tenancy evolve event schemas over time while isolating tenants through Reactor context.
  • End-to-end workflows for creating, loading, mutating, and projecting aggregates.

Quick Start

Create an AccountLedger-like aggregate, publish creation and update events to the EventStore, and load the aggregate state by replaying its events.

Dependency Matrix

Required Modules

None required

Components

Standard package

💻 Claude Code Installation

Recommended: Let Claude install automatically. Simply copy and paste the text below to Claude Code.

Please help me install this Skill:
Name: implement-event-sourcing
Download link: https://github.com/fireflyframework/fireflyframework-claude-skills/archive/main.zip#implement-event-sourcing

Please download this .zip file, extract it, and install it in the .claude/skills/ directory.
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