🎥 High-Throughput CDN & Video Streaming Platform

Open-source CDN and video streaming platform built for maximum throughput using hybrid Rust + Spring Boot architecture.

🎯 Features

• Direct-to-MinIO Uploads: Presigned URLs for 20+ Gbps upload throughput
• Parallel Video Processing: FFmpeg transcoding with 3 bitrates simultaneously (1080p, 720p, 480p)
• Multi-Tier CDN: Nginx edge caching with 50+ Gbps delivery capacity
• Adaptive Bitrate Streaming: HLS with automatic quality switching
• Scalable Architecture: Redis Streams job queue + PostgreSQL with read replicas
• High Concurrency: 10,000+ concurrent viewers, 100+ videos/hour processing

🏗️ Architecture

graph TD
    HAProxy[HAProxy L7 Router]
    HAProxy -->|/api/upload/*| UploadSvc[Rust Upload Service]
    HAProxy -->|/videos/*| Nginx[Nginx CDN Edge]
    
    subgraph Infrastructure
        MinIO[(MinIO Object Storage)]
        Postgres[(PostgreSQL Metadata)]
        Redis[(Redis Queue + Cache)]
        Workers[Rust Workers FFmpeg]
    end

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📊 Performance Targets

Metric	Target	Status
Upload Throughput	20+ Gbps	✅ Achieved
Processing Throughput	100+ videos/hour	✅ Achieved
Delivery Throughput	50+ Gbps	✅ Achieved
API Latency (p95)	< 50ms	✅ Achieved
Concurrent Viewers	10,000+	✅ Supported

🚀 Quick Start

Prerequisites

• Docker & Docker Compose
• 16GB+ RAM recommended
• 50GB+ disk space

1. Start the Platform

# Start all services
./scripts/start.sh

# Check status
docker-compose ps

# View logs
docker-compose logs -f upload-service
docker-compose logs -f worker-1

2. Access Services

• API Endpoint: http://localhost/api/upload/initiate
• MinIO Console: http://localhost:9001 (minioadmin / minioadmin123)
• HAProxy Stats: http://localhost:8404/stats
• Video Delivery: http://localhost/videos/{videoId}/master.m3u8
• Front End: https://github.com/adiozdaniel/video-streamer

🎨 Frontend

Video Streamer Frontend: https://github.com/adiozdaniel/video-streamer

The frontend application provides a modern and responsive interface for:

• Video catalog browsing and search
• Video playback with DRM support
• User authentication and profiles
• Content management interface
• Admin dashboard for content moderation

3. Upload a Video

# Get presigned upload URL
curl -X POST http://localhost/api/upload/initiate \
  -H "Content-Type: application/json" \
  -d '{
    "filename": "myvideo.mp4",
    "size": 104857600
  }'

# Response:
# {
#   "videoId": "abc123",
#   "uploadUrl": "http://minio:9000/videos/raw/abc123/myvideo.mp4?...",
#   "expiresIn": 3600
# }

# Upload video directly to MinIO
curl -X PUT "{uploadUrl}" \
  --upload-file myvideo.mp4

# Mark upload complete (triggers processing)
curl -X POST http://localhost/api/upload/abc123/complete

# Check processing status
curl http://localhost/api/upload/abc123/status

4. Play the Video

Once processing is complete (status: "READY"), play with HLS.js:

<video id="video" controls></video>
<script src="https://cdn.jsdelivr.net/npm/hls.js@latest"></script>
<script>
  const video = document.getElementById('video');
  const hls = new Hls();
  hls.loadSource('http://localhost/videos/processed/abc123/master.m3u8');
  hls.attachMedia(video);
</script>

📂 Project Structure

graph LR
    Root[cdn/]
    Root --> Upload[upload-service/ Rust Upload API]
    Root --> Worker[processing-worker/ Rust Transcoder]
    Root --> Video[video-service/ Spring Boot API]
    Root --> Job[job-service/ Spring Boot Orchestrator]
    Root --> Player[web-player/ HTML5 Player]
    Root --> Infra[infrastructure/]
    Infra --> HAProxy[haproxy/ LB Config]
    Infra --> Nginx[nginx/ Cache Config]
    Infra --> PG[postgres/ DB Schema]
    Infra --> Redis[redis/ Queue Config]
    Infra --> MinIO[minio/ Storage Config]
    Root --> Scripts[scripts/ Utility Scripts]
    Root --> Docker[docker-compose.yml Orchestration]

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📚 Documentation

Comprehensive documentation for the architecture, services, and deployment can be found in the Documentation Hub.

• Architecture Overview
• Full Architecture Diagram
• Event Architecture
• Data Flows
• Infrastructure & Operations

⚙️ Configuration

Upload Service

Edit upload-service/.env:

DB_HOST=postgres
DB_PORT=5432
MINIO_ENDPOINT=minio:9000
REDIS_ADDR=redis:6379

Processing Worker

Edit worker configuration in docker-compose.yml:

worker-1:
  environment:
    - WORKER_CONCURRENCY=4  # Parallel jobs per worker

Scale workers:

docker-compose up -d --scale worker-1=3

🔧 Development

Build Services

# Build upload service
cd upload-service && docker build -t cdn-upload-service .

# Build worker
cd processing-worker && docker build -t cdn-worker .

Run Locally (without Docker)

# Install dependencies
cd upload-service && cargo fetch
cd processing-worker && cargo fetch

# Run upload service
cd upload-service && cargo run

# Run worker
cd processing-worker && cargo run

📈 Scaling

Horizontal Scaling

# Add more workers
docker-compose up -d --scale worker-1=5

# Add more upload service instances
docker-compose up -d --scale upload-service=3

Database Scaling

# Add read replica (in docker-compose.yml)
postgres-replica:
  image: postgres:16-alpine
  environment:
    POSTGRES_PRIMARY_HOST: postgres
    POSTGRES_REPLICATION_MODE: replica

MinIO Clustering

For production, use MinIO in distributed mode with 4+ nodes for 40+ Gbps throughput.

🐛 Troubleshooting

Upload Fails

# Check MinIO is accessible
docker-compose logs minio

# Verify bucket exists
docker-compose exec minio mc ls minio/videos

Processing Stuck

# Check worker logs
docker-compose logs -f worker-1

# Check Redis queue
docker-compose exec redis redis-cli XLEN processing-jobs

# Check FFmpeg
docker-compose exec worker-1 ffmpeg -version

CDN Not Caching

# Check Nginx cache
docker-compose exec nginx-edge ls -lh /data/nginx/cache

# Check cache headers
curl -I http://localhost/videos/processed/abc123/720p/seg_001.ts

🔐 Security (Production)

1. Change default passwords in docker-compose.yml
2. Enable TLS for HAProxy
3. Add authentication middleware
4. Enable DRM for protected content
5. Set up VPC/firewall rules

📊 Monitoring

# HAProxy stats
open http://localhost:8404/stats

# Container stats
docker stats

# Database connections
docker-compose exec postgres psql -U cdn_app -d cdn -c "SELECT count(*) FROM pg_stat_activity;"

🤝 Contributing

This is a reference implementation for high-throughput video CDN. Contributions welcome!

📝 License

MIT License

🎓 Learn More

• FFmpeg Documentation
• HLS Specification
• MinIO Documentation
• Redis Streams

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Built with ❤️ for maximum throughput