- Hit ratio: proportion of requests the cache is able to fulfill successfully out of the total requests it receives
- Fill rate: proportion of cache population related to cache max size
- Population: average number of objects present in the cache over the period
- Max: cache size
- Reads: number of reads of the cache over the period
- Evictions: number of removes of the cache over the period
(caches metrics are captured every 5 minutes)
If the hit ratio is low, consider the benefits of using cache or be sure to correctly fill it.
If the hit ratio is 100% and the population equals the max size (i.e. the fill rate is 100%), consider increasing the cache size.
If evictions are high, consider increasing the cache size.