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Strongly Consistent Tables via Raft

1 post · Jun 2026

What this trail covers

ScyllaDB is introducing per-tablet Raft groups to provide strong consistency for specific data types and workloads, complementing its existing eventually consistent model. This allows for stronger guarantees on metadata and application data like counters, balances, and idempotency records, while aiming to maintain ScyllaDB's high performance and parallelism.

All ScyllaDB trails
  1. Riding the Raft to Strong Consistency in ScyllaDBThis post details ScyllaDB's integration of Raft consensus protocol on a per-tablet basis to provide strong consistency for specific use cases like metadata, counters, balances, and idempotency records. It explains the limitations of eventual consistency for these workloads and how Raft addresses them by ensuring agreement among replicas on the order of operations, thereby enabling stronger guarantees without sacrificing the system's inherent parallelism and performance.