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Hot data identification is an issue of paramount importance in flash-based storage devices since it has a great impact on their overall performance as well as retains a big potential to be applicable to many other fields. However, it has been least investigated. HotDataTrap is a novel on-line hot data identification scheme adopting a sampling mechanism. This sampling-based algorithm enables HotDataTrap to early discard some of the cold items so that it can reduce runtime overheads and a wastedoi:10.1145/2245276.2232034 dblp:conf/sac/ParkDNDKK12 fatcat:archdhbdvvaqjjypj44vcarnke