Vast.ai Reference Architecture

Overview

Production-ready architecture patterns for Vast.ai integrations.

Prerequisites

Understanding of layered architecture
Vast.ai SDK knowledge
TypeScript project setup
Testing framework configured

Project Structure

my-vastai-project/
├── src/
│   ├── vastai/
│   │   ├── client.ts           # Singleton client wrapper
│   │   ├── config.ts           # Environment configuration
│   │   ├── types.ts            # TypeScript types
│   │   ├── errors.ts           # Custom error classes
│   │   └── handlers/
│   │       ├── webhooks.ts     # Webhook handlers
│   │       └── events.ts       # Event processing
│   ├── services/
│   │   └── vastai/
│   │       ├── index.ts        # Service facade
│   │       ├── sync.ts         # Data synchronization
│   │       └── cache.ts        # Caching layer
│   ├── api/
│   │   └── vastai/
│   │       └── webhook.ts      # Webhook endpoint
│   └── jobs/
│       └── vastai/
│           └── sync.ts         # Background sync job
├── tests/
│   ├── unit/
│   │   └── vastai/
│   └── integration/
│       └── vastai/
├── config/
│   ├── vastai.development.json
│   ├── vastai.staging.json
│   └── vastai.production.json
└── docs/
    └── vastai/
        ├── SETUP.md
        └── RUNBOOK.md

Layer Architecture

┌─────────────────────────────────────────┐
│             API Layer                    │
│   (Controllers, Routes, Webhooks)        │
├─────────────────────────────────────────┤
│           Service Layer                  │
│  (Business Logic, Orchestration)         │
├─────────────────────────────────────────┤
│          Vast.ai Layer        │
│   (Client, Types, Error Handling)        │
├─────────────────────────────────────────┤
│         Infrastructure Layer             │
│    (Cache, Queue, Monitoring)            │
└─────────────────────────────────────────┘

Key Components

Step 1: Client Wrapper

// src/vastai/client.ts
export class Vast.aiService {
  private client: Vast.aiClient;
  private cache: Cache;
  private monitor: Monitor;

  constructor(config: Vast.aiConfig) {
    this.client = new Vast.aiClient(config);
    this.cache = new Cache(config.cacheOptions);
    this.monitor = new Monitor('vastai');
  }

  async get(id: string): Promise<Resource> {
    return this.cache.getOrFetch(id, () =>
      this.monitor.track('get', () => this.client.get(id))
    );
  }
}

Step 2: Error Boundary

// src/vastai/errors.ts
export class Vast.aiServiceError extends Error {
  constructor(
    message: string,
    public readonly code: string,
    public readonly retryable: boolean,
    public readonly originalError?: Error
  ) {
    super(message);
    this.name = 'Vast.aiServiceError';
  }
}

export function wrapVast.aiError(error: unknown): Vast.aiServiceError {
  // Transform SDK errors to application errors
}

Step 3: Health Check

// src/vastai/health.ts
export async function checkVast.aiHealth(): Promise<HealthStatus> {
  try {
    const start = Date.now();
    await vastaiClient.ping();
    return {
      status: 'healthy',
      latencyMs: Date.now() - start,
    };
  } catch (error) {
    return { status: 'unhealthy', error: error.message };
  }
}

Data Flow Diagram

User Request
     │
     ▼
┌─────────────┐
│   API       │
│   Gateway   │
└──────┬──────┘
       │
       ▼
┌─────────────┐    ┌─────────────┐
│   Service   │───▶│   Cache     │
│   Layer     │    │   (Redis)   │
└──────┬──────┘    └─────────────┘
       │
       ▼
┌─────────────┐
│ Vast.ai    │
│   Client    │
└──────┬──────┘
       │
       ▼
┌─────────────┐
│ Vast.ai    │
│   API       │
└─────────────┘

Configuration Management

// config/vastai.ts
export interface Vast.aiConfig {
  apiKey: string;
  environment: 'development' | 'staging' | 'production';
  timeout: number;
  retries: number;
  cache: {
    enabled: boolean;
    ttlSeconds: number;
  };
}

export function loadVast.aiConfig(): Vast.aiConfig {
  const env = process.env.NODE_ENV || 'development';
  return require(`./vastai.${env}.json`);
}

Instructions

Step 1: Create Directory Structure

Set up the project layout following the reference structure above.

Step 2: Implement Client Wrapper

Create the singleton client with caching and monitoring.

Step 3: Add Error Handling

Implement custom error classes for Vast.ai operations.

Step 4: Configure Health Checks

Add health check endpoint for Vast.ai connectivity.

Output

Structured project layout
Client wrapper with caching
Error boundary implemented
Health checks configured

Error Handling

Issue	Cause	Solution
Circular dependencies	Wrong layering	Separate concerns by layer
Config not loading	Wrong paths	Verify config file locations
Type errors	Missing types	Add Vast.ai types
Test isolation	Shared state	Use dependency injection

Examples

Quick Setup Script

# Create reference structure
mkdir -p src/vastai/{handlers} src/services/vastai src/api/vastai
touch src/vastai/{client,config,types,errors}.ts
touch src/services/vastai/{index,sync,cache}.ts

Resources

Flagship Skills

For multi-environment setup, see vastai-multi-env-setup.

vastai-reference-architecture