akka / akka-projection

Akka Projections is intended for building systems with the CQRS pattern, and facilitate in event-based service-to-service communication.

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akka-projection

Akka Projection provides an abstraction for consuming a stream of Envelope (where Envelope contains a payload and a trackable offset). This streams can originate from persisted events, Kafka topics, or other Alpakka connectors.

Akka Projection also provides tools to track, restart and distribute these projections.