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OptiQL is an optimistic lock that offers both high read performance and robustness under contention by extending the classic queue-based MCS locks with optimistic reads.

See details in our SIGMOD 2024 paper below. If you use our work, please cite:

OptiQL: Robust Optimistic Locking for Memory-Optimized Indexes.
Ge Shi, Ziyi Yan and Tianzheng Wang.
Proceedings of the ACM on Management of Data, Vol 1, No. 3 (SIGMOD 2024)

See you in Santiago!

This repository implements OptiQL and several other baseline locks, along with index use cases (B+-tree and ART) that use OptiQL in optimistic lock coupling. See sub-directories for:

• Index benchmarks: under index-benchmarks directory
• Microbenchmarks: under latch-microbenchmarks directory
• Plotting scripts: under plots directory