Acid Persistence With Write Ahead Logging

via “write-ahead logging with configurable durability guarantees”

Qdrant - High-performance, massive-scale Vector Database and Vector Search Engine for the next generation of AI. Also available in the cloud https://cloud.qdrant.io/

Unique: Implements configurable fsync policies in WAL to allow applications to choose durability vs latency tradeoffs, with automatic recovery using WAL logs to restore to the last committed state without manual intervention

vs others: More flexible than fixed durability guarantees because fsync policies are configurable per deployment, allowing high-latency systems to use immediate fsync while throughput-optimized systems use batched fsync