cache hit rate

noun

UK /kæʃ hɪt reɪt/

US /kæʃ hɪt reɪt/

The cache hit rate is how often the computer finds what it needs in its fast memory.

A high cache hit rate makes the website load faster for everyone.

SYNONYMS

hit ratio hit rate cache efficiency success rate

RELATED WORDS

cache cache miss memory CPU latency

OTHER MEANINGS

2. In web browsing, the share of requests served from a stored copy instead of the original server.

The CDN reported a cache hit rate of 95 percent during the sale.

3. In databases, the fraction of queries answered from the buffer cache without reading from disk.

Tuning the buffer pool raised the cache hit rate and cut query times.

4. A performance metric used to judge how well a caching layer is sized and tuned.

Engineers watched the cache hit rate drop after the new feature launched.