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Castore



πŸ’– Huge thanks to the sponsors who help me maintain this repo:

TheodoΒ Β  Feathers CloudΒ Β lijiananΒ Β Raees IqbalΒ Β SentryΒ Β Lucas Saldanha FerreiraΒ Β  Plus sign

Making Event Sourcing easy 😎

Event Sourcing is a data storage paradigm that saves changes in your application state rather than the state itself.

It is powerful as it enables rewinding to a previous state and exploring audit trails for debugging or business/legal purposes. It also integrates very well with event-driven architectures.

However, it is tricky to implement πŸ˜…

After years of using it at Theodo, we have grown to love it, but also experienced first-hand the lack of consensus and tooling around it. That's where Castore comes from!


Castore is a TypeScript library that makes Event Sourcing easy 😎


Features

πŸ™ˆ Stack agnostic: Can be used in any JS context (web apps, containers, lambdas... you name it πŸ™Œ)

πŸ•ŠοΈ Light-weight: opt-in packages only

πŸ‹οΈ Type-safety pushed to the limit

πŸ“ Validation library agnostic (Zod, JSON schema...) with support for type inference

😍 On-the-shelf adapters for Redux, DynamoDB, SQS, EventBridge and more

🎯 Test tools included

πŸ”§ Migration & maintenance utils available

🎨 React components to visualize and model your event stores

And much more to come πŸ™Œ: Admin, snapshots, read models...

Visit the πŸ‘‰ official documentation πŸ‘ˆ to get started!