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User-defined JavaScript functions that transform and filter event streams at runtime for real-time materialized views.
Distinct from User-Defined Functions: Distinct from User-Defined Functions: specifies JavaScript-based projection functions for event stream transformation, not general database UDFs.
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KurrentDB is an event-native database designed for event sourcing and event-driven architectures. It stores application state as an immutable, ordered sequence of events rather than updating rows in place, preserving full history for audit, replay, and distributed consistency. The database combines event storage with real-time streaming and a built-in JavaScript projection engine that transforms and aggregates event streams into materialized views. The system provides official gRPC client libraries for Python, Node.js, Java, .NET, Go, and Rust, enabling multi-language application development
Runs user-defined JavaScript functions to transform and aggregate event streams into materialized views.
KurrentDB is an event-native database designed for event sourcing and event-driven architectures. It stores events as immutable, ordered records in streams, preserving a complete audit trail and enabling temporal queries. The database uses gRPC for all client-server and inter-node communication, providing efficient binary serialization and bidirectional streaming, and supports atomic multi-stream writes that ensure consistency across multiple streams in a single transaction. The database distinguishes itself with a built-in JavaScript projection engine that transforms, filters, and aggregates
Ships a built-in JavaScript projection engine for real-time event stream transformation and materialized views.