Removing fsync from our local storage engine
↗A narrow, single-node KV engine removes fsync from the durable path using fixed-size preallocated files, O_DIRECT writes, and a 4KB-aligned journal with atomic commits, delivering roughly 2x higher 4KB-write throughput and lower tail latency on NVMe, but requiring a narrow SSD durability contract and not intended as a general-purpose KV or transaction engine.
May 9, 20261%