System Design Interview: When to use API Gateway, Load Balancer, or Reverse Proxy?

IT k Funde August 6, 2025
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IT k Funde

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Download FREE Guides - AWS Cheat Sheet covering 129 services 👉 https://tinyurl.com/aws-cheat-sheet Become an AI Powered AWS Cloud Professional 👉 https://tinyurl.com/aws-cloud-jumpstart-program Stuck in a System Design interview on when to use an API Gateway, Load Balancer, or Reverse Proxy? You're not alone. Knowing the difference—and more importantly, WHEN to use each—is a critical skill that separates senior engineers from junior developers. Every major app from Zomato to Netflix uses this trio to scale and stay reliable. Understanding this architecture isn't just theory; it's a requirement for top DevOps, backend, and system design roles. This is the knowledge that gets you past tough interview questions and proves you can build for the real world. In this video, I demystify these concepts with: ✈️A simple Airport Analogy to make the roles of each component crystal clear. 📈 3 Evolving Scenarios showing how a start up's architecture grows into an enterprise system. ✅ A Clear Comparison of when and why to choose each tool. WHAT'S INSIDE: 00:00 - The DevOps Interview Problem 01:07 - The Airport Analogy: Explaining Load Balancer, API Gateway & Reverse Proxy 05:57 - Real-Life Example 1: Small Start-up Architecture 06:56 - Real-Life Example 2: Medium-Scale Architecture 09:15 - Real-Life Example 3: Enterprise-Scale Architecture 11:22 - Final Comparison: Key Differences Summarized 14:23 - Conclusion & Key Takeaways Master this, and you'll be ready to design resilient, scalable systems that impress in any interview. Let's dive in! Drop a comment and let me know - which of these three components have you found most confusing? Or share a system design scenario where you had to choose between them! Like and subscribe if you want more deep dives into the architectures that are shaping the future of software development! 🚀 #APIGateway #LoadBalancer #ReverseProxy #SystemDesign #DevOps #Microservices #SystemDesignInterview #SoftwareArchitecture #CloudComputing #TechInterview #Zomato #Scalability #TechEducation #CareerGrowth

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