LRU replacement strategy

Adaptive Server uses LRU strategy for:

LRU replacement strategy reads the data pages sequentially into the cache, replacing a “least recently used” buffer. The buffer is placed on the MRU end of the data buffer chain. It moves toward the LRU end as more pages are read into the cache.

Figure 2-2: LRU strategy takes a clean page from the LRU end of the cache

Image shows a line of pages, from the MRU to the LRU, with a wash marker and a dirty page being written to disk.