eskit — Event Sourcing toolkit for Go (open-source candidate) #1

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opened 2026-02-18 23:02:17 +00:00 by ash · 0 comments

ash commented

2026-02-18 23:02:17 +00:00

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eskit

Event sourcing library built on the decider pattern with Go generics.

Repo: https://git.nullsoft.is/ash/eskit

What it does

Decider pattern: Command → Decide(state, cmd) → []Event → Evolve(state, event) → State
Type-safe with Go generics
Pluggable event stores (memory, SQLite done; PostgreSQL, NATS planned)
Optimistic concurrency control
Snapshotting support
Zero dependencies for core (SQLite store uses modernc.org/sqlite)

Status

Core abstractions
In-memory store
SQLite store
Tests passing
README with examples
PostgreSQL store
NATS JetStream store
Projections / read models
Event upcasting

Open-source potential

Clean API, minimal dependencies, solves a real problem. Could be a solid alternative in the Go event sourcing space.

## eskit Event sourcing library built on the decider pattern with Go generics. **Repo:** https://git.nullsoft.is/ash/eskit ### What it does - Decider pattern: `Command → Decide(state, cmd) → []Event → Evolve(state, event) → State` - Type-safe with Go generics - Pluggable event stores (memory, SQLite done; PostgreSQL, NATS planned) - Optimistic concurrency control - Snapshotting support - Zero dependencies for core (SQLite store uses modernc.org/sqlite) ### Status - [x] Core abstractions - [x] In-memory store - [x] SQLite store - [x] Tests passing - [x] README with examples - [ ] PostgreSQL store - [ ] NATS JetStream store - [ ] Projections / read models - [ ] Event upcasting ### Open-source potential Clean API, minimal dependencies, solves a real problem. Could be a solid alternative in the Go event sourcing space.