Announcing Strictland - new contract testing library for message compatibility

Strictland is a new open-source JVM contract testing library for message compatibility. Unlike Pact or Spring Cloud Contracts, it takes a lightweight approach: it serializes messages in unit tests and saves the output as snapshot files committed alongside code. Tests fail when the serialized shape changes unexpectedly. It supports two check types — snapshot checks (exact format lock) and compatibility checks (backward/forward compatibility between message versions). No broker, schema registry, or Docker setup required. Available on Maven Central at version 0.3.0, with plans to add .NET and TypeScript support.