Event Sourcing Event Store stores your data as a series of immutable events over time, making it easy to build event-sourced applications. Open Source Event Store is licensed under a 3-clause BSD license, whether it runs on a single node or as a high availability cluster. High Availability Event Store can run as a cluster of nodes containing the same data, which remains available for writes provided at least half the nodes are alive and connected. Client Interfaces Event Store has a native HTTP interface based on the AtomPub protocol which is plenty fast enough for the majority of use cases. Projections Projections allow you to react to events as they are written, and to create new events when interesting combinations occur. Great Performance Whilst performance depends on configuration and use patterns,


