On 12/09/2013 5:22 a.m., Alfredo Rezinovsky wrote:
There are some docs about how does LFUDA works?
LFUDA is just a sorting order. Objects sorted by frequency of use. Every time an object is used that use is counted and the object pulled forward in the 'list' to fit somewhere within the set of other objects with the same usage count.
http://en.wikipedia.org/wiki/Least_Frequently_Used has a overview of LFU and there is a whitepaper technical document linked from the bottom of the wikipedia page. The 'DA' on the end is a Squid-specific adaptation to account for object age in the sorting order.
The configuration manual for the replacement policy directive (http://www.squid-cache.org/Doc/config/cache_replacement_policy/) has reference to the HP technical whitepapers specifically about the Squid policies and what each does.
Amos
