[vladvildanov]

Note

Low Risk
New optional server-admin APIs on single-node clients only, with explicit failures on cluster/distributed and tests; no changes to data commands or auth.

Overview
Adds client support for Redis 8.6 HOTKEYS so a single-node Redis client can start a tracking session, read ranked hot keys by CPU and/or network bytes, stop, and reset.

On standalone clients, hotkeys_start, hotkeys_get, hotkeys_stop, and hotkeys_reset build the wire command (metrics, count, duration, sample, optional slots) and HashifyHotkeys normalizes hotkeys_get replies across RESP2/RESP3, including [key, value] pairs for the by-* fields.

Redis::Cluster and Redis::Distributed override all four methods to raise NotImplementedError with guidance to connect to one node directly, because tracking is server-wide and not routable. The cluster driver wraps pipelined / multi blocks with HotkeysGuard so HOTKEYS cannot slip through to an arbitrary shard.

README documents usage and limitations; integration tests cover the happy path, error cases, argument encoding, pipelined hotkeys_get, and cluster/distributed rejection.

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[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-11-04T14:04:45.871169Z	8b2bbdc	PR opened

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