cache coherency

cache coherency
cache consistency

   <storage> (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)