Architecture Overview

This document describes the overall system architecture of OpenHuman.

System Architecture Diagram

┌─────────────────────────────────────────────────────────────┐
│                        Client Layer                          │
│  ┌─────────┐  ┌─────────┐  ┌─────────┐  ┌─────────┐        │
│  │ Web     │  │ Mobile  │  │ CLI     │  │ API     │        │
│  │ Client  │  │ Client  │  │ Tool    │  │ Integration │    │
│  └────┬────┘  └────┬────┘  └────┬────┘  └────┬────┘        │
└───────┼────────────┼────────────┼────────────┼──────────────┘
        │            │            │            │
        └────────────┴─────┬──────┴────────────┘
                           │
                   ┌───────▼───────┐
                   │   API Gateway  │
                   │  (Load Balance)│
                   └───────┬───────┘
                           │
        ┌───────────────────┼───────────────────┐
        │                   │                   │
┌───────▼───────┐   ┌──────▼──────┐   ┌───────▼───────┐
│  Agent Engine  │   │  Agent Engine │   │  Agent Engine  │
│   Cluster 1   │   │   Cluster 2   │   │   Cluster N    │
└───────┬───────┘   └──────┬──────┘   └───────┬───────┘
        │                   │                   │
        └───────────────────┴───────────────────┘
                           │
                   ┌───────▼───────┐
                   │  Data Storage │
                   │ (Vector DB)   │
                   └───────────────┘

Core Components

1. API Gateway

The API gateway is the entry point of the system, responsible for:

• Request routing and load balancing
• Authentication and authorization
• Rate limiting and circuit breaking
• Request logging and monitoring

2. Agent Engine

The Agent Engine is the core execution engine, responsible for:

• Agent creation and management
• Task scheduling and execution
• Tool call management
• Context management

3. Data Storage Layer

The data storage layer includes:

• Vector Database: Stores embeddings, supports semantic search
• Relational Database: Stores structured data
• Cache: Improves response speed

Deployment Architecture

Standalone Deployment

Suitable for development and testing environments:

• All components run on a single server
• Use SQLite as the database
• Suitable for small-scale usage

Cluster Deployment

Suitable for production environments:

• Multi-node Agent Engine cluster
• PostgreSQL + Redis cluster
• Kubernetes orchestration
• Auto scaling

Tech Stack

Component	Technology
API Gateway	Nginx / Kong
Agent Engine	Node.js / Python
Vector Database	Milvus / Pinecone
Relational Database	PostgreSQL
Cache	Redis
Message Queue	RabbitMQ / Kafka

Next Steps

• Core Components - Learn about each component details
• Data Flow - Learn about data processing flow