The buffer pool caches disk pages in memory frames. When all frames are full and a new page is needed, a replacement policy chooses which frame to evict.
LRU
Clock
LRU-K
Active
Evicting
Loading
Pinned
0
Hits
0
Misses
0
Evictions
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Hit Rate
LRU order (MRU → LRU):
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Try these access patterns:
Policy: LRU
Least Recently Used
Evicts the frame that was accessed the longest time ago.
Pros: Simple, good temporal locality Cons: Susceptible to sequential flooding (large scans evict hot pages)