Node.js AdvancedLesson 97Free preview

Real-World Examples

This lesson is part of Node.js · All levels

Summary

This lesson summarizes real-world applications of the REST API: server REST, chat applications, scrapers, task queue services, and more. Each example shows a combination of modules and libraries commonly used in industry. The goal is for you to map the concepts you've learned into real projects. (Node.js)

Key points

REST API: Express/Fastify + database + input validation + token authentication
Realtime Chat: Socket.IO/WebSocket with room and broadcast.
Worker/queue: Bull or BullMQ for heavy tasks like sending emails and generating reports.
Web scraping: fetch/axios + cheerio, pay attention to the robots.txt and the demand limit.
CLI tool: commander/yargs to build command row tools.

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