storage — RedDB blog

May 2026 Engineering · 17 · 14 min One WAL, four data models: how cross-modality transactions actually work A deep dive into the shared write-ahead log that lets a document update, a vector insert, a KV write, and a blob commit land in the same transaction. Record layout, the fsync contention tradeoff, and the four mitigations we shipped before the tail latency became someone else's incident.
Field reports · 06 · 7 min Notes from compaction hell Three months of LSM compaction tuning at production scale — the latency tail we measured, the four configuration changes that actually moved P99, and the one we wish we'd made on day one.

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