Designing a Safe Memory System

A safe memory system is the foundation of a reliable agent. Bringing together all the concepts from this module into a complete design.

8 min•By Priygop Team•Updated 2026

Memory System Checklist

Choose the right storage backend for each type of state: in-memory for temporary, database for persistent
Set TTL on all temporary data: search results, API responses, session tokens
Log every state write: what was written, when, and by which step
Validate state structure before writing and after reading
Implement session timeout and cleanup
Use namespaced keys to prevent conflicts between different agents or tasks
Handle storage failures gracefully — fall back to in-memory if persistent storage is unavailable
Never store sensitive data (passwords, full card numbers) in agent state
Keep state size bounded — truncate history beyond a maximum number of entries

A safe memory system is the foundation of a reliable agent.
Choose the right storage backend for each type of state: in-memory for temporary, database for persistent
Set TTL on all temporary data: search results, API responses, session tokens
Log every state write: what was written, when, and by which step

Topics in This Module

Memory System Checklist

Choose the right storage backend for each type of state: in-memory for temporary, database for persistent

Set TTL on all temporary data: search results, API responses, session tokens

Log every state write: what was written, when, and by which step

Validate state structure before writing and after reading

Implement session timeout and cleanup

Use namespaced keys to prevent conflicts between different agents or tasks

Handle storage failures gracefully — fall back to in-memory if persistent storage is unavailable

Never store sensitive data (passwords, full card numbers) in agent state

Keep state size bounded — truncate history beyond a maximum number of entries

Topics in This Module