Hit Ratio

Hit ratio is a performance metric used in computing to measure how effectively a system retrieves data from cache or memory. It represents the percentage of times the system finds the requested data immediately in the cache, without needing to access the slower main memory. A higher hit ratio indicates more efficient data retrieval, leading to faster performance and less delay. For example, if out of 100 data requests, 80 are found in cache, the hit ratio is 80%. This metric helps assess how well caching strategies improve overall system speed.