Snooping and snarfing, as well as the Firefly and Dragon protocols are all used to maintain coherency in these structures.
Belady's MIN algorithm is the theoretically most efficient one used for these, however it is not practically implementable in hardware. Snooping and snarfing, as well as the Firefly and Dragon protocols are all used to maintain coherency in these structures. An important decision in their design is their write policy, which can be either write-through or write-back, and their replacement policy is often governed by a least recently used algorithm. FTP, what are these structures utilizing the concept of locality of reference, which, on CPUs, are often divided into a level 1 and a level 2?
Belady's MIN algorithm is the theoretically most efficient one used for these, however it is not practically implementable in hardware.
{cache} (pron. “cash”)