Redis Memory Optimization Cheat Sheet

Eviction policies, TTLs, and compact data structures

Last Updated: November 21, 2025

Focus Areas

Focus
Pick `volatile-*` policies when TTLs exist
Use hashes or streams to pack many keys

Commands & Queries

redis-cli INFO memory
Check Redis memory stats
redis-cli CONFIG SET maxmemory 1gb
Limit Redis memory
redis-cli CONFIG SET maxmemory-policy volatile-lru
Set eviction policy

Summary

Match memory policies to workloads and keep TTLs defined.

💡 Pro Tip: Monitor memory usage and set maxmemory with a safe eviction policy.
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