Скачать или смотреть REST API Coding Interview Challenge Solved | Count Active Users by Region (Real-World Backend Test)

In this video, I solve a real-world REST API coding interview challenge focused on counting active users by region. This type of problem is commonly used in backend developer interviews, software engineering assessments, and API-based system design tests.

You’ll learn how to:

Work with RESTful APIs

Fetch and process JSON data

Filter active users

Group results by geographic region

Apply clean and efficient algorithmic logic

Think like a professional backend engineer

This challenge is perfect for:

Backend Developers

Full Stack Developers

Software Engineering Students

Coding Interview Preparation

API & Data Processing Practice

✅ Official Websites & Documentation Used in This Challenge

🔹 REST API Official Concept (Roy Fielding):
https://ics.uci.edu/~fielding/pubs/di...

🔹 HTTP Protocol Official Documentation:
https://datatracker.ietf.org/doc/html...

🔹 JSON Official Website:
https://www.json.org

🔹 MDN Web Docs – REST APIs:
https://developer.mozilla.org/en-US/d...

🔹 MDN Web Docs – Fetch API:
https://developer.mozilla.org/en-US/d...

🔹 Postman (API Testing Tool):
https://www.postman.com

🔹 Node.js (If used for backend logic):
https://nodejs.org

🔹 Python Official Website (If used in solution):
https://www.python.org

If you’re serious about cracking backend interviews, mastering API logic, or improving your real-world coding skills, this video will help you level up.

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