Infinispan Cache Metrics
Internal
Overview
Each Infinispan individual cache exposes a number of performance metrics, and the cache container managing those caches aggregate some of those metrics at container level. These metrics are described below.
Average Read, Write and Remove Time
The metrics represent the cache read/write/remove operation average time response time, in milliseconds. For reads, the value includes hits and misses. May return null if the cache is not started. Maintained as a long. It always maintains the last value, even after the underlying caches become idle. In order to reset it, you must reset underlying caches statistics, individually, with :reset-statistics.
The value for these metrics are aggregated at cache container level.
| JDG 6 JMX | JDG 6 CLI |
| JDG 7 JMX | JDG 7 CLI |
The Cache Container
The metric at cache container level represent an aggregation of the metrics for the underlying cache and in general, are a good indicator of the activity on that specific cache node - normally, there's just one cache container.
Interesting metrics are:
- the number of hits, misses and stores at the cache container level (JDG 7 JMX hits, misses, stores). This is an aggregation of the corresponding values for the underlying caches. It is preferable to expose these metrics as a rate per second. Some monitoring solutions allow the rate to be calculated automatically (see Data Dog counters).
- the total number of entries at cache container level. This is an aggregation of the corresponding values for the underlying caches. For more details on the cache number of entries see Infinispan Cache Number of Entries.
- the average read, write and remove time for the caches managed by this container.
Individual Caches
TODO.