Interactive 2Q cache demonstration with three lists: A1in (FIFO for newcomers), A1out (ghost list of recently evicted keys), and Am (main LRU cache for proven items).

A1in — Newcomers (FIFO, max 2)
Am — Main cache (LRU, max 2)
A1out — Ghosts of evicted A1in items (keys only, max 2)
Cache is empty. Click a letter to access it.
Access an item
Hits
0
Ghost hits
0
Misses
0
Hit rate
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Operation log
Waiting for first access…