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Look-aside versus look-through
From CompArch
This is a probably vain attempt to standardize terminology.
- Look-through caches
- refer to first looking up a cache, and then, if missing, going to look up in whatever is backing up the cache, e.g. main memory.
- Lookaside caches
- might refer to looking a request up both in main memory and the cache - using the cache if it hits.
This is probably a vain attempt, since the term TLB (Translation Lookaside Buffer) is nearly always used in what I would define as a look-through configuration.
