Skip to content
CAI
Produce a survey ↗Verify a survey

envato/event_sourcery

EventSourcery is a Ruby gem that provides a framework for implementing event sourcing patterns. It offers core abstractions for managing aggregate state, persisting events, and processing event streams in isolated child processes. The system includes configurable error handling strategies, multiple event store implementations (including an in-memory variant for testing), and comprehensive tooling for serialization and subscription management.

67.3

Adequate · 5 August 2026

1.9k

lines of production code

Ruby

primary language

2

bus factor · 26 authors in all

4

measurements over time

CAI band scale
CAI trend line

How it got here

2016 · Rebranding to EventSourcery

The project was renamed from ESFramework to EventSourcery, involving a complete restructuring of the codebase and test suite. This period focused on establishing the new library's core components, such as AggregateRoot and EventStore, while removing the legacy ESFramework code and dependencies.

14 changes

2017 · In-memory store and error handling

This period focused on expanding the library's capabilities with configurable error handling strategies and an in-memory event store for testing. The work included introducing flexible event type serialization, adding RSpec shared examples for validation, and ensuring comprehensive test coverage for these new components.

6 changes

CAI lens gauges

Survey your own repository

envato/event_sourcery was measured the same way every project in this corpus was: the same rubric, at a pinned commit, with the result published in full. Point the surveyor at a repository you know and see whether you agree with it.

Survey a repository

About this page

  • The description of this project is derived from its own commit history, not from its README.
  • The score is its highest published measurement, taken on 5 August 2026 at a pinned commit. It is not a live figure and does not change until the project is measured again.
  • Measured at commit 61a82fd5a2 — the exact code this score is about.
  • Scored under rubric rubric-2026.08.19. Score the same commit under that rubric and you get the same number.
CAI link cards