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KEYS command blocks Redis with O(N) full scans

6/10 Medium

Using the KEYS command for searching in Redis blocks the entire process during a full-scan operation with O(N) complexity. This causes severe performance degradation and should be replaced with SCAN or Redis Search alternatives.

Redis
Category
performance
Workaround
solid
Stage
debug
Freshness
persistent
Scope
single_lib
Upstream
open
Recurring
Yes
Buyer Type
team
Maintainer
active

Sources

Collection History

Query: “What are the most common pain points with Redis for developers in 2025?”3/30/2026

Using the KEYS command — use `SCAN` or Redis Search instead

Created: 3/30/2026Updated: 3/30/2026