What is the difference between cache coherency and cache consistency?
An example of an AI chatbot conversation about cache coherency vs cache consistency.
What is the difference between cache coherency and cache consistency?
Cache coherency ensures that multiple caches reflect the same data, while cache consistency guarantees that all accesses to a shared variable return the most recent value.
Can you give an example of cache coherency in action?
Sure! In a multi-core processor, if one core updates a value in its cache, cache coherency protocols ensure that other cores see this update in their caches.
What are some common protocols used for cache coherency?
Common protocols include MESI (Modified, Exclusive, Shared, Invalid) and MOESI (Modified, Owner, Exclusive, Shared, Invalid), which help maintain cache coherency.
How does cache consistency affect performance?
Cache consistency can impact performance by introducing delays due to synchronization mechanisms, which can slow down access to shared data.
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