What is catche miss?

Answer 1

A cache miss occurs when the data requested by a processor is not found in the cache memory, necessitating a retrieval from slower main memory or storage. This can lead to increased latency and reduced performance since accessing data from the cache is significantly faster than from main memory. Cache misses can be categorized into three types: cold (or compulsory), capacity, and conflict misses, each reflecting different reasons for the absence of the requested data in the cache. Reducing cache misses is crucial for optimizing system performance.