System Design Basics | Client, Server, API, Database, Cache, Load Balancer, Monolith vs Microservice

System Design is one of the most important skills for software engineers, but most beginners struggle because concepts are explained in a complex way. In this video, I explain System Design Basics from absolute scratch — assuming you have NEVER worked on backend or system design before. This video covers High Level Design (HLD) fundamentals in very simple language with real-world examples. Timestamps: 00:00 Precap 02:28 Overview 03:10 Client & Server 06:27 API - Request & Response 11:23 How Client hits API? 11:46 Frontend 16:43 Why do we need to hit API? Why is server required? 20:52 Backend 24:18 Database 26:36 Cache 30:16 Cache Hit & Cache Miss 35:45 Scaling - Vertical & Horizontal Scaling 50:17 Single Point of Failure 55:10 Vertical Scaling or Horizontal Scaling. What to follow? 58:14 Auto-Scaling 01:01:26 Load Balancer 01:08:36 Sync vs Async 01:13:36 Message Queue - Kafka 01:17:37 Stateful vs Stateless Architecture 01:25:10 Monolithic vs Microservices 📌 Topics covered in this video: - What is System Design? - What is Client and Server - Client Server Architecture explained - What is an API and why it is needed - What is a Database and how data is stored - What is Cache and why it improves performance - What is a Load Balancer and how it works - Request flow in a real system - Monolithic Architecture vs Microservices Architecture - When to use Monolith vs Microservices - System Design basics for interviews This video is perfect for: - Beginners in backend development - Freshers preparing for system design interviews - Frontend developers moving to backend - Anyone learning High Level Design from scratch - Software engineers preparing for FAANG interviews System Design Introduction & Video Overview What is System Design? High Level Design Explained Client and Server Architecture Explained API Explained – Request and Response Flow How Client Sends Request to API (Real Example) Frontend Explained for Beginners Why API and Server are Needed in System Design Backend Explained – What Happens on Server Side Database Explained – How Data is Stored Cache Explained – Why Cache is Important Cache Hit vs Cache Miss Explained Scaling Explained – Vertical vs Horizontal Scaling Single Point of Failure in System Design Vertical Scaling vs Horizontal Scaling – Which is Better? Auto Scaling Explained (Real World Systems) Load Balancer Explained with Examples Synchronous vs Asynchronous Communication Message Queue Explained – Kafka Basics Stateful vs Stateless Architecture Explained Monolithic vs Microservices Architecture Explained After watching this video, you will clearly understand how real-world systems like YouTube, Instagram, WhatsApp, and Netflix work internally. This is PART 1 of a complete System Design series where we will go from basics to advanced system design concepts step by step. 👍 Like, Share and Subscribe for more System Design, DSA, Java and Interview Preparation content. #SystemDesign #SystemDesignBasics #HighLevelDesign #HLD #BackendDevelopment #SoftwareEngineering #SystemDesignForBeginners #ClientServer #Microservices #MonolithicArchitecture #SystemDesignInterview #FAANGPreparation system design, system design basics, system design for beginners, high level design, hld system design, client server architecture, client server model, what is api, api explained, database basics, cache in system design, load balancer explained, monolithic vs microservices, backend system design, system design interview preparation, system design tutorial, system design from scratch, system design concepts, software architecture basics, backend development basics, faang system design System Design Basics Explained from Scratch | Client, Server, API, DB, Cache, Load Balancer System Design for Beginners | Complete High Level Design Fundamentals (HLD) System Design 0 to 1 | Client Server Model, API, Database, Cache, Load Balancer System Design Basics in Simple Words | Monolith vs Microservices | HLD System Design Explained Like You’re 5 | Beginner to Interview Level ⭐️⭐️ Don't forget to subscribe to my channel! ⭐️⭐️ ■ Subscribe URL : https://www.youtube.com/channel/UCPGnMQDh7gdkmI_IadKdmfA?sub_confirmation=1 Thank you for your support! Susbcribe @MohitChhabraTech ╔═╦╗╔╦╗╔═╦═╦╦╦╦╗╔═╗ ║╚╣║║║╚╣╚╣╔╣╔╣║╚╣═╣ ╠╗║╚╝║║╠╗║╚╣║║║║║═╣ ╚═╩══╩═╩═╩═╩╝╚╩═╩═╝ DISCLAIMER: All opinions shared on this channel are our own and don't express views or opinions of our employers. We only use our experiences and public knowledge to make our content. NO CONFIDENTIAL INFORMATION of our employers is used or shared on this channel.