Microservices Explained — What Interviewers Actually Ask | Tamil

Checkout VanakkamDSA : https://vanakkamdsa.com?utm_medium=yo... Microservices Architecture Explained for System Design Interviews — API Gateway, Load Balancer, Kafka, Circuit Breaker, CQRS & the exact questions product company interviewers ask. If you're prepping for product-based company interviews, microservices comes up in almost every system design round. In this video, I break down what microservices architecture really means, why companies move away from monolith, and how concepts like API Gateway, Load Balancing, Service Discovery, Message Queues, Circuit Breakers, and CQRS work together in real production systems — explained with simple everyday analogies so it actually sticks for your next interview. Key Points Covered: 1. Monolith vs Microservices — what interviewers actually want to hear 2. Core building blocks: API Gateway, Load Balancer, Service Discovery, Message Queues 3. Failure handling: Circuit Breaker, Database-per-Service, CQRS, Distributed Tracing 4. When NOT to use microservices — and why team size matters Timestamps: 0:00 - Why Microservices Comes Up in Every System Design Interview 0:47 - Real-Life Analogy: Netflix & Swiggy 2:36 - What is Monolithic Architecture? 4:09 - The Scaling Problem with Monolith 5:46 - Microservices Explained (Film Crew Analogy) 7:24 - API Gateway Explained 8:32 - Load Balancing 9:09 - Rate Limiting 9:14 - Service Discovery 11:01 - Inter-Service Communication (Sync vs Async) 12:21 - Message Queues: RabbitMQ & Kafka 15:07 - Circuit Breaker Pattern 17:36 - Database-Per-Service Pattern 18:59 - CQRS (Command Query Responsibility Segregation) 20:45 - Distributed Tracing 21:29 - Monolith vs Microservices Recap 23:09 - Loose Coupling & Shared Database Risks 23:30 - Disadvantages of Microservices 24:34 - When You Should NOT Use Microservices 25:05 - Final Thoughts & Interview Tips Want to actually crack the product company interview instead of just watching videos about it? Vanakkam DSA covers DSA, System Design, Core CS and full interview prep in one structured program: https://vanakkamdsa.com Want 1:1 guidance on your prep or career path? Book a mentorship call: https://www.meetmymentor.me/hareesh_r... Recommended Videos: How Whatsapp Works? Whatsapp System Design:    • How Whatsapp works ? Whatsapp System Desig...   What FAANG Engineers Know About System Design That You Don't:    • What FAANG Engineers Know About System Des...   Core Computer Science Crash Course | All Interview Questions Covered:    • Core Computer Science Crash Course | All I...   WhatsApp Channel: https://whatsapp.com/channel/0029VaYI... Join Membership:    / @hareeshrajendran   📢📢📢📢 Social Media Links 📢📢📢📢 Mentorship 1:1: https://www.meetmymentor.me/hareesh_r... Buy me a coffee ☕️: https://www.buymeacoffee.com/hareeshr... LinkedIn:   / hareesh-r   Instagram:   / hareesh_._r   Facebook:   / hareeshprogrammer   Twitter:   / hareesh_dev   GitHub: https://github.com/hareesh-r Curious to know more about me?: https://hareesh.web.app 🚀 Your support means the world to me! 🙌 Let's build an awesome community together. 🌍✨ #Microservices #SystemDesign #SoftwareEngineeringInterviews