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RS: Added explanation of temporarily exceeding DB memory limits due to adaptive memory allocation #1834

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RS: Added explanation of temporarily exceeding DB memory limits due to adaptive memory allocation #1834

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DOC-5275 RS: Added explanation of temporarily exceeding DB memory lim…
rrelledge Jun 30, 2025
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Merge branch 'main' into DOC-5275
rrelledge Jul 9, 2025
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Fixed outdated relref
rrelledge Jul 9, 2025
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6 changes: 6 additions & 0 deletions content/operate/rs/databases/memory-performance/memory-limit.md
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Expand Up @@ -67,6 +67,12 @@ but tries to avoid stopping primary shards.
We recommend that you have a [monitoring platform]({{< relref "/operate/rs/monitoring/" >}}) that alerts you before a system gets low on RAM.
You must maintain sufficient free memory to make sure that you have a healthy Redis Enterprise installation.

## Adaptive memory allocation

During high-velocity data ingestion, databases can temporarily reach up to 200% of their configured memory limit. This adaptive memory allocation strategy allows large amounts of data to be written to the database quickly without rejecting valid transactions.

Databases should return to their configured memory limits after data is removed according to the [eviction policy]({{<relref "/operate/rs/databases/memory-performance/eviction-policy/">}}) and [time-to-live (TTL)]({{<relref "/develop/using-commands/keyspace#key-expiration">}}).

## Memory metrics

The Cluster Manager UI provides metrics that can help you evaluate your memory use.
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