Case Study: The "Unblockable" Universal Scraper

Challenge: Scrapping high-fidelity Next.js/React sites often fails because standard tools (wget/curl) miss the hydrated JS state and dynamic assets.

Architecture: Hybrid Rendering

I unified Playwright for DOM rendering with raw Node.js Streams for large binary downloads. This bypasses the DevTools Protocol size limits for large video files.

Resilience Patterns

• Path Sanitization: Custom logic to handle Next.js _next/image query parameters, hashing them into filesystem-safe filenames.
• Stateful Resumability: The scraper saves its cursor (visited sets) every N pages, allowing it to recover from `SIGINT` or crashes without restarting.