How does Scala support large-scale schema evolution in event-driven systems?

Schema evolution ensures compatibility across changing event formats over time.

In Scala-based event-driven systems, schema evolution is managed using Avro, Protobuf, or JSON versioning with schema registries. Producers and consumers evolve independently while maintaining backward and forward compatibility. This ensures older consumers can read new data and vice versa. Schema evolution rules enforce safe changes like adding optional fields.