Event Sourcing Loves Functional Programming
summary
A concrete, functional implementation of event sourcing: a Scala port of FsUno that models the domain with events, decision/evolution functions, and projections. Uses Event Store to persist ordered events, builds SQL and document projections, supports snapshots and simple actor restart strategies, and addresses transaction grain size, versioning and migrations; includes wiring the event bus, projection storage setup and deployment notes so the example is runnable and production-ready.
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chapters (11)
- 0:00Event sourcing intro
- 1:22Event sourcing concepts
- 5:23Functional event sourcing
- 11:25State projections
- 24:34Separation of responsibilities
- 35:52Scaling with event sourcing
- 40:47Event sourcing mistakes
- 48:59Transactions and aggregates
- 54:18Performance optimization
- 59:43Event versioning
- 1:00:32Q&A
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