IONIA: High-Performance Replication for Modern Disk-based KV Stores
summary
IONIA is a storage-aware replication protocol for SSD-based write-optimized KV stores that delivers one round-trip writes by making updates durable immediately and deferring parallel execution to the background, uses deferred parallel execution to keep throughput near an unreplicated system, and scales reads by issuing lightweight meta queries to the leader plus a client-side consistency check so most reads complete in 1RTT without forcing writes on all replicas. Prototype integration with replicated SplinterDB shows the design meets these claims across workloads.
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chapters (9)
- 0:00IONIA introduction
- 2:43Right-optimized KV stores
- 4:53Replication consistency challenges
- 7:20Existing protocol limits
- 10:10Ionia design key ideas
- 11:54Low-latency read path
- 17:10Read protocol design
- 22:29Performance evaluation
- 23:53Conclusion and future work
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