Embeddable Event Sourcing engine for Java 21 + PostgreSQL. Immutable JSONB event log, optimistic locking, SHA-256 snapshots, async projections and Zero Trust security. Framework-agnostic core with Spring Boot banking API demo.
java cqrs spring-boot ddd postgresql domain-driven-design event-sourcing event-store testcontainers projections snapshots optimistic-locking java21 immutable-events
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Updated
May 17, 2026 - Java