Hummock (RW Specific)

Hummock is RisingWave's purpose-built, cloud-native storage engine used within its State Store. It employs a Log-Structured Merge-tree (LSM-tree) architecture to efficiently manage large amounts of streaming state on durable object storage (like S3). Hummock provides features like checkpointing, versioning, and compaction, underpinning RisingWave's fault tolerance, scalability, and state management capabilities.