event-store-design

To design a scalable event store, apply append-only persistence, per-stream versioning, and optimistic concurrency control. Specify requirements for snapshots and subscriptions to ensure reliable replayability and audit trails across distributed components.

Choose between EventStoreDB, PostgreSQL, Kafka, and DynamoDB by evaluating technology guidelines against your specific workload and consistency needs. Compare append-only persistence, per-stream ordering, and subscription capabilities to match your architectural requirements.

Implement per-stream versioning and optimistic concurrency control by enforcing append-only writes and tracking stream versions. Ensure idempotent writes to maintain durability and consistency when persisting domain events across distributed components.

You need snapshots and projections when aggregating domain events for read models becomes a performance bottleneck. Creating snapshots periodically captures aggregate state, reducing the need to replay entire event streams during query execution.

Yes, this event store design approach supports idempotent writes and global ordering. It specifies requirements for both per-stream and global ordering to ensure reliable persistence and consistent replayability across multiple backends like EventStoreDB and PostgreSQL.