---
id: "AE22-004"
category: "memory_architecture"
confidence: 0.96
date: "2026-02-15"
source_file: "VOICE_MEMORY_MVP_SHIPPING_PLAN.md (Section 2.3 Memory Layer)"
---

# AE22-004

Three-tier memory architecture (Redis hot <5ms, PostgreSQL warm <50ms, Qdrant deep <100ms) provides optimal latency stratification for voice agents -- hot memory for instant recall, warm for structured facts, deep for semantic 'that thing we talked about last month' queries
