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dwdougherty merged 2 commits into from
Nov 21, 2025
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Update xtrim.md with consumer group reference details #2431

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49d60ce
Update xtrim.md with consumer group reference details
LiorKogan Nov 21, 2025
cd84686
Update content/commands/xtrim.md
dwdougherty Nov 21, 2025
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4 changes: 3 additions & 1 deletion content/commands/xtrim.md
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Expand Up @@ -152,7 +152,9 @@ Limits the number of entries to examine during trimming. Available since Redis 6
<details open>
<summary><code>KEEPREF | DELREF | ACKED</code></summary>

Specifies how to handle consumer group references when trimming. If no option is specified, `KEEPREF` is used by default:
Specifies how to handle consumer group references when trimming. If there are no consumer groups, these arguments have no effect. Available since Redis 8.2.

If no option is specified, `KEEPREF` is used by default. Unlike the `XDELEX` and `XACKDEL` commands where one of these options is required, here they are optional to maintain backward compatibility:

- `KEEPREF` (default): When trimming, removes entries from the stream according to the specified strategy (`MAXLEN` or `MINID`), regardless of whether they are referenced by any consumer groups, but preserves existing references to these entries in all consumer groups' PEL (Pending Entries List).
- `DELREF`: When trimming, removes entries from the stream according to the specified strategy and also removes all references to these entries from all consumer groups' PEL.
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