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by royguo1988
2008 days ago
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The reasons we did a better job(from our own perspective) than RocksDB are:
1. We moved lots of code out side db_mutex (db mutex is convenient but costs too much)
2. We introduced a new KV separation implementation that we believe is better than RocksDB’s implementation (we didn't hear any production user are using RocksDB's KV separation yet)
3. We introduced a lazy compaction strategy that can delay compaction task while online services are dealing with short-time heavy writing.
4. Other optimizations like time histogram based TTL, pipelined WAL sync. |
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