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Hit ratio is a performance metric used in caching systems, representing the proportion of cache accesses that successfully retrieve data from the cache, as opposed to requiring a fetch from a slower storage layer. A high hit ratio indicates that the cache is effectively storing frequently accessed data, improving overall system performance. Locality of reference refers to the tendency of programs to access a relatively small portion of their address space repeatedly over a short period, which can be temporal (repeated accesses to the same data) or spatial (accessing data close to recently accessed data). This principle underlies the effectiveness of caching strategies in computer systems.

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1d ago

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