---
id: "rlm_axiom_006"
category: "general"
date: "2026-02-23"
source_file: "rlm_axioms_2026_02_23.jsonl"
---

# rlm_axiom_006

**principle**: Memory is multi-layer: effective AI memory requires 4 storage tiers working together — Qdrant (vector/semantic), PostgreSQL (relational/state), Redis (cache/queue), FalkorDB+Graphiti (episodic/relational graph). Missing any tier leaves a blind spot.

**evidence**: Session discovery that FalkorDB exists as 4th tier not consistently used. Qdrant alone misses temporal relationship queries. PostgreSQL alone misses semantic similarity. All 4 are mandatory.

**strength**: high
