How Real-Time Materialized Views Work with ksqlDB

What this post added

This post details how ksqlDB builds real-time materialized views using stateful stream processing, leveraging RocksDB for local storage and Kafka changelog topics for durability and recovery. It explains automatic repartitioning for GROUP BY operations and the role of changelog compaction. The post also introduces the LATEST_BY_OFFSET aggregation for retaining the last value per key.