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Why We Built Our Own Storage Engine Databases need a place to store and retrieve data. That’s what Qdrant’s key-value storage does—it links keys to values.
When we started building Qdrant, we needed to pick something ready for the task. So we chose RocksDB as our embedded key-value store.
It is mature, reliable, and well-documented.
Over time, we ran into issues. Its architecture required compaction (uses LSMT), which caused random latency spikes.