# I Gave an AI Tutor a Memory That Survives Restarts — Here’s the Tiered Architecture (and Tested…

> Source: <https://pub.towardsai.net/i-gave-an-ai-tutor-a-memory-that-survives-restarts-heres-the-tiered-architecture-and-tested-42e24ec7e2a8?source=rss----98111c9905da---4>
> Published: 2026-07-14 18:31:02+00:00

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# I Gave an AI Tutor a Memory That Survives Restarts — Here’s the Tiered Architecture (and Tested Code) That Made It Work

Building a tiered, persistent memory system for an AI tutor agent — with importance scoring, decay, and fact consolidation — verified end-to-end, including a full pytest suite, before publication.

**Estimated Reading Time:** 17–20 minutes

## Table of Contents

- Introduction
- Problem Statement
- Background
- Core Concepts
- Technology Deep Dive
- Architecture
- Mini Project: MemoryTutor
- Implementation
- Code Walkthrough
- Testing
- Performance
- Limitations
- Best Practices
- Common Mistakes
- Production Considerations
- Future Improvements
- Conclusion
- Further Reading
- Official References

## Introduction

Think about the last time you called customer support about the same issue twice. The first agent understood…