Observer Design Pattern Explained with Python Example | Low Level Design - Lesson 12
Автор: Code and Debug
Загружено: 2026-03-06
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How do weather apps send live updates to millions of users at once? That's the Observer Design Pattern!
In this video, I explain the Observer Pattern using a Weather Station example. I first show you the bad approach where everything is tightly coupled, and then refactor it into clean, scalable code using the Observer Pattern.
🔥 What you'll learn:
✅ What is Observer Design Pattern
✅ When and why to use it
✅ Weather Station example with bad approach vs clean approach
✅ Subject, Observer, and Notification flow explained
✅ How Observer Pattern is asked in LLD interviews
📚 This is part of my FREE Low Level Design (LLD) Course in Python.
Subscribe for the full Design Patterns series!
👉 LLD Playlist: • Low Level System Design in Python
👉 Enroll in this Course: https://codeanddebug.in/course/low-le...
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