20 MUST-KNOW System Design Concepts For Interviews

Vishakha Sadhwani: 20 MUST-KNOW System Design Concepts For Interviews

I’ve seen that many engineers understand the tools, but still mix up similar-looking concepts when discussing cloud system design concepts.

Here’s the simplest explanation of some of the most important topics.

• Forward Proxy vs Reverse Proxy
→ Forward Proxy protects the client
→ Reverse Proxy protects the server

• CDN vs Cache
→ CDN delivers content closer to users
→ Cache stores frequently accessed data

• Load Balancer vs API Gateway
→ Load Balancer distributes traffic
→ API Gateway controls and routes API requests

• Monolith vs Microservices
→ Monolith keeps everything in one application
→ Microservices split functionality into independent services

• DNS vs Service Discovery
→ DNS finds public services on the internet
→ Service Discovery finds services inside distributed systems

Watch till the end to understand all of them, and subscribe for more!

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🙋‍♀️ ABOUT ME

I’m Vishakha ☁️; A Cloud Architect and DevOps enthusiast who loves turning complex cloud concepts into simple, practical insights you can actually use. You’ll find real-world projects 💻 quick explainers ☕ and honest career advice 💬; From Kubernetes and Terraform to landing roles and building your tech brand, I keep things approachable, actionable, and a little fun so learning Cloud and DevOps actually feels exciting.

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