资料来源 : Free On-Line Dictionary of Computing

cache coherency
     
         (Or "cache consistency") /kash koh-heer'n-see/ The
        synchronisation of data in multiple {caches} such that reading
        a memory location via any cache will return the most recent
        data written to that location via any (other) cache.
     
        Some {parallel processors} do not cache accesses to {shared
        memory} to avoid the issue of cache coherency.  If caches are
        used with shared memory then some system is required to detect
        when data in one processor's cache should be discarded or
        replaced because another processor has updated that memory
        location.  Several such schemes have been devised.
     
        (1998-11-10)