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Most Laravel AI agents fail. They ask questions you already answered. Stateless design causes this. You send a prompt. You get a response. The agent forgets everything.
Use three memory layers to fix this.
Layer 1: Conversation History. This is the chat transcript. Store it in Eloquent. Use a sliding window. Load only the last 20 turns. This saves your token limit.
Layer 2: Session Memory. This stores facts for one session. Example: The user is on project 42. Store this in Redis. Set a 60 minute TTL. This stops memory leaks.
Layer 3: Long Term Memory. This stores permanent facts. Example: The user likes JSON. Use pgvector for semantic search.
How to manage these layers:
- Use background jobs to extract facts. Use a small model for this.
- Prune old sessions every 90 days.
- Merge similar memories using cosine distance. This removes noise.
Separate these layers. It keeps your agent fast. It keeps costs low.