Tool ·
Cache simulator
Every major eviction policy — LRU, LFU, FIFO, CLOCK, ARC, 2Q, W-TinyLFU, S3-FIFO — against Belady's optimum on Zipf, loop, scan and shifting workloads or your own trace; hit-ratio curves for all of them at once, a step-through of each policy's internal state, write policies, cache stampede fixes (singleflight, jitter, XFetch, stale-while-revalidate) and hot-key and two-tier maths.
