Monitoring status for the MemoryStore

The MemoryStore provides status values via the user status mechanism. It provides the following metrics:

memStoreCommitTimeEwmaLongMillis — A longer-term exponentially-weighted moving average (EWMA) of the time in milliseconds taken to commit to the MemoryStore (in-memory store and on-disk persistence).

memStoreCommitTimeEwmaShortMillis — A quickly-evolving exponentially-weighted moving average (EWMA) of the time in milliseconds taken to commit to the MemoryStore (in-memory store and on-disk persistence).

memStoreCommitTimeMaxInLastHour — The maximum commit latency in milliseconds since the start of the last 1 hour measurement period for the MemoryStore (in-memory store and on-disk persistence).

distMemStoreCommitTimeEwmaLongMillis — A longer-term exponentially-weighted moving average (EWMA) of the time in milliseconds taken to commit to the distributed MemoryStore.

distMemStoreCommitTimeEwmaShortMillis — A quickly-evolving exponentially-weighted moving average (EWMA) of the time in milliseconds taken to commit to the distributed MemoryStore.

distMemStoreCommitTimeMaxInLastHour — The maximum commit latency in milliseconds since the start of the last 1 hour measurement period for the distributed MemoryStore.

The above MaxInLastHour values (for both the MemoryStore and the distributed MemoryStore) are updated if either of the following conditions is true:

The latency of current commit transaction is greater than the existing maximum.

The existing maximum value was set more than 1 hour ago.

For more information about monitor status information published by the correlator, see Managing and Monitoring over REST and Watching correlator runtime status.

When using Software AG Command Central to manage your correlator, see also Monitoring the KPIs for EPL applications and connectivity plug-ins.