redis-py Clients should identify themselves on connect (Fix)

The Fix

pip install redis==7.1.0

Based on closed redis/redis-py issue #2856 · PR/commit linked

Production note: This usually shows up under retries/timeouts. Treat it as a side-effect risk until you can verify behavior with a canary + real traffic.

Open PR/Commit

@@ -15,7 +15,12 @@ exclude =
     tasks.py
 ignore =
+    E126
+    E203
     F405

fix.md

Option A — Upgrade to fixed release\npip install redis==7.1.0\nWhen NOT to use: Do not use if it changes public behavior or if the failure cannot be reproduced.\n\n

Why This Fix Works in Production

Trigger: Duplicate #2682
Mechanism: The library did not implement the CLIENT SETINFO command for client identification on connect
Why the fix works: Adds support for the CLIENT SETINFO command, allowing clients to identify themselves on connect as specified in issue #2856. (first fixed release: 7.1.0).

Production impact:

If left unfixed, retries/timeouts can trigger duplicate external side-effects (double charges, duplicate emails, repeated writes).

Why This Breaks in Prod

The library did not implement the CLIENT SETINFO command for client identification on connect
Production symptom (often without a traceback): Duplicate #2682

Proof / Evidence

GitHub issue: #2856
Fix PR: https://github.com/redis/redis-py/pull/2857
First fixed release: 7.1.0
Reproduced locally: No (not executed)
Last verified: 2026-02-09
Confidence: 0.95
Did this fix it?: Yes (upstream fix exists)
Own content ratio: 0.91

Discussion

High-signal excerpts from the issue thread (symptoms, repros, edge-cases).

Jump to Sources Open on GitHub

“CLIENT SETINFO is a new fire-and-forget command that is available as part of redis 7.2. Clients should send the lowercased version of the client name (i.e redis-py, jedis, go-redis) as part of the initial connect, after authenticating to th”

Issue thread · issue description · source

Failure Signature (Search String)

Duplicate #2682

Copy-friendly signature

signature.txt

Failure Signature
-----------------
Duplicate #2682

Error Message

Signature-only (no traceback captured)

error.txt

Error Message
-------------
Duplicate #2682

What Broke

Clients were unable to identify themselves, leading to potential issues in monitoring and debugging.

Why It Broke

The library did not implement the CLIENT SETINFO command for client identification on connect

Fix Options (Details)

Option A — Upgrade to fixed release Safe default (recommended)

pip install redis==7.1.0

When NOT to use: Do not use if it changes public behavior or if the failure cannot be reproduced.

Use when you can deploy the upstream fix. It is usually lower-risk than long-lived workarounds.

Fix reference: https://github.com/redis/redis-py/pull/2857

First fixed release: 7.1.0

Last verified: 2026-02-09. Validate in your environment.

When NOT to Use This Fix

Do not use if it changes public behavior or if the failure cannot be reproduced.

Did This Fix Work in Your Case?

Quick signal helps us prioritize which fixes to verify and improve.

Prevention

Capture the exact failing error string in logs and tests so you can reproduce via a minimal script.
Pin production dependencies and upgrade only with a reproducible test that hits the failing path.

Version Compatibility Table

Version	Status
7.1.0	Fixed

Related Issues

No related fixes found.

Cluster: redis-py:duplicate-processing redis-py hub redis-py best practices All hubs All clusters

Related clusters: Configuration error Retry storm Data consistency

Sources

We don’t republish the full GitHub discussion text. Use the links above for context.