翻訳と辞書
Words near each other
・ c1 security
・ c2 security
・ c2man
・ c386
・ c5
・ c64
・ c68
・ ca
・ ca-telon
・ cable modem
cache
・ cache block
・ cache coherency
・ cache conflict
・ cache consistency
・ cache hit
・ cache line
・ cache memory
・ cache miss
・ cache on a stick


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cache : FOLDOC
cache
/kash/ A small fast memory holding recently accessed data, designed to speed up subsequent access to the same data. Most often applied to processor-memory access but also used for a local copy of data accessible over a network etc.
When data is read from, or written to, main memory a copy is also saved in the cache, along with the associated main memory address. The cache monitors addresses of subsequent reads to see if the required data is already in the cache. If it is (a cache hit) then it is returned immediately and the main memory read is aborted (or not started). If the data is not cached (a cache miss) then it is fetched from main memory and also saved in the cache.
The cache is built from faster memory chips than main memory so a cache hit takes much less time to complete than a normal memory access. The cache may be located on the same integrated circuit as the CPU, in order to further reduce the access time. In this case it is often know


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