Database

Implement Command Query Responsibility Segregation to separate write and read models in event-sourced architectures

Design and implement event stores for persisting domain events with append-only semantics and optimistic concurrency

Evolve event schemas safely over time using upcasting, weak schema strategies, and version negotiation

Handle eventual consistency challenges in distributed event-sourced systems with practical patterns and strategies

Build and maintain read model projections from event streams for optimized query performance

Coordinate long-running business processes across aggregates and services using sagas and process managers

Optimize aggregate loading with snapshot patterns to avoid replaying long event streams from the beginning