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Architecture & Patterns: Memory + State Management

Production Patterns

Architecture View

graph LR
  A[Conversation turns] --> B[Short-term buffer]
  B --> C[Summary checkpoint]
  C --> D[Persisted state]
  D --> E[Resume and retrieve]

Common Failure Modes

Common Failure Modes

  • Persisting large raw histories without compaction.
  • Missing schema version on saved state files.
  • Over-retrieving irrelevant context snippets.

Interview Q&A

Q: Interview Q: How do you choose between summary and raw retrieval?

Use summaries for conversational continuity and raw retrieval for factual precision. Hybrid memory works best for long, mixed tasks.

Q: Interview Q: How do you prevent stale memory from polluting responses?

Attach timestamps and relevance scores, then decay or filter stale entries before retrieval.