Design a User-Uploaded Video Streaming Platform System Design Interview

1. Problem Statement

2. Architecture Discussion Map

Use this as one discussion aid, not a single correct answer. Your design should follow from the requirements, scale, and trade-offs you establish.

graph TD
    A[Uploader] --> B(Video Ingestion)
    B --> C[Transcoding Queue]
    C --> D[Worker Nodes : H.264/H.265]
    D --> E[(Blob Storage)]
    E --> F[CDN Edge Nodes]
    G[Viewer] -->|Adaptive Bitrate| F

3. Key Focus Areas

• 1
  CDN Edge Strategy (Caching hot content)
• 2
  Adaptive Bitrate Streaming (HLS/DASH)
• 3
  Storage Efficiency (Blob storage + Erasure Coding)
• 4
  Upload Pipeline (Chunking & Parallel Encoding)
• 5
  Latentcy vs Throughput trade-offs