Take Out the TraChe: Maximizing (Tra)nsactional Ca(che) Hit Rate.
OSDI(2023)
摘要
Most caching policies focus on increasing object hit rate to improve overall system performance. However, these algorithms are insufficient for transactional workloads. In this work, we define a new metric, transactional hit rate, to capture when caching reduces latency for transactions. We present DeToX, a caching system that leverages transactional dependencies to make eviction and prefetching decisions. DeToX is able to significantly outperform single-object alternatives on real-world workloads and popular OLTP benchmarks, providing up to a 1.3x increase in transaction hit rate and 3.4x improvement in cache efficiency.
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