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Brain + Spine Architecture
The Brain + Spine pattern is Engram’s foundational architecture, separating cognitive reasoning from durable execution.
Overview
| Component | Technology | Purpose |
|---|---|---|
| Brain | LangGraph | Cognitive reasoning & agent orchestration |
| Spine | Temporal | Durable workflow execution |
| Memory | Zep + Graphiti | Long-term knowledge storage |
Documentation
- Brain + Spine Story - Complete guide to the Brain + Spine pattern
- Brain + Spine Diagram - Visual representation
Key Concepts
Brain (LangGraph)
- Stateless agent functions
- Reasoning and decision-making
- Tool orchestration
- Horizontal scaling
Spine (Temporal)
- Long-running workflows
- Durable execution
- Human-in-the-loop
- Workflow recovery
Memory (Zep)
- Episodic memory (conversations)
- Semantic memory (knowledge graph)
- Session management
- Search and retrieval
Related: 4-Layer Context Schema, Authentication