Caching Explained: The Secret to Lightning-Fast Apps & Websites! ⚡ (System Design Fundamentals)

Ever wonder how your favorite websites and apps load almost instantly? The secret isn't magic—it's caching! 🚀 In this video, we break down one of the most crucial concepts in system design and software engineering.

We'll explore how a tiny delay of just 100ms can cost companies billions 💰 and how caching is the ultimate weapon against latency. From the basic definition to advanced strategies, you'll learn everything you need to know about building faster, more scalable, and resilient systems.

Whether you're a budding developer, a system design interview candidate, or just curious about how the digital world works, this is the perfect guide for you!

🕒 TIMESTAMPS:

0:00 - Introduction: The Need for Speed
0:25 - The Billion-Dollar Impact of Latency
0:58 - What is a Cache? 🤔
1:18 - Performance: Before vs. After Caching
1:40 - The Caching Map: Understanding Layers of Caching (CDN, Application, Database)
2:17 - Real-World Example: News Feed Cache Layers
2:41 - The Problem: When The Cache Is Full
3:06 - Cache Eviction Policies Explained
3:19 - Common Policies: FIFO, LFU, and LRU
3:41 - How LRU (Least Recently Used) Works
4:02 - Advanced Strategies: Write-Through vs. Read-Through Cache
4:41 - The Bigger Picture: More Than Just Speed
5:12 - The Ultimate Trade-Off: Performance vs. Consistency

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Видео Caching Explained: The Secret to Lightning-Fast Apps & Websites! ⚡ (System Design Fundamentals) канала Dinesh Baratam