What is cache coherency and why is it important in software?
Cache coherency ensures that multiple caches in a system reflect the most recent data, preventing inconsistencies.
How can I implement cache coherency in a multi-threaded application?
You can use techniques like invalidation, update, or a directory-based approach to maintain cache coherency.
What are the common algorithms used for cache coherency?
Common algorithms include MESI, MOESI, and MSI, each with different strategies for managing cache states.
Can you give an example of implementing one of these algorithms?
Sure! For example, the MESI protocol uses four states: Modified, Exclusive, Shared, and Invalid to manage cache lines.
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