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🏗️ System Design Thinking

Learn System Design by understanding the thought process—not just memorizing architectures.

This repository documents my journey of learning System Design from the ground up. The focus is on developing the engineering mindset required to design scalable, reliable, and maintainable software systems.

Whether you're preparing for interviews or becoming a better software engineer, this repository is designed to help you think like a system architect.


🎯 Goals

  • Understand System Design fundamentals
  • Learn how large-scale systems work
  • Practice breaking down real-world problems
  • Document design decisions and trade-offs
  • Prepare for Senior Software Engineer interviews

📚 Topics Covered

Fundamentals

  • What is System Design?
  • Functional vs Non-Functional Requirements
  • CAP Theorem
  • Scalability
  • Availability
  • Reliability
  • Latency vs Throughput
  • Consistency Models
  • Fault Tolerance

Architecture

  • Monolith
  • Microservices
  • Event-Driven Architecture
  • Serverless
  • Layered Architecture
  • Hexagonal Architecture
  • Clean Architecture

Networking

  • HTTP / HTTPS
  • REST APIs
  • GraphQL
  • gRPC
  • WebSockets
  • TCP vs UDP
  • DNS
  • CDN

Databases

  • SQL vs NoSQL
  • Database Indexing
  • Sharding
  • Replication
  • Partitioning
  • Transactions
  • ACID
  • BASE

Caching

  • Redis
  • Memcached
  • Cache Aside
  • Read Through
  • Write Through
  • Write Back
  • Cache Eviction

Messaging

  • Kafka
  • RabbitMQ
  • Amazon SQS
  • Event Streaming
  • Pub/Sub

Storage

  • Blob Storage
  • Object Storage
  • File Systems
  • Distributed Storage

Load Balancing

  • Reverse Proxy
  • Nginx
  • HAProxy
  • Load Balancers
  • Health Checks

Security

  • Authentication
  • Authorization
  • JWT
  • OAuth2
  • Rate Limiting
  • API Gateway
  • SSL/TLS

Cloud

  • AWS
  • Docker
  • Kubernetes
  • Auto Scaling
  • Monitoring
  • Logging

🏛️ Design Case Studies

  • URL Shortener
  • TinyURL
  • Pastebin
  • Chat Application
  • WhatsApp
  • Instagram
  • Twitter (X)
  • Facebook Feed
  • YouTube
  • Netflix
  • Uber
  • Ola
  • BookMyShow
  • Google Drive
  • Dropbox
  • Payment Gateway
  • E-commerce Platform
  • Notification Service
  • Search Engine
  • Ride Sharing

📁 Repository Structure

system-design-thinking/
│
├── 01-fundamentals/
├── 02-networking/
├── 03-database/
├── 04-caching/
├── 05-messaging/
├── 06-storage/
├── 07-cloud/
├── 08-security/
├── 09-design-patterns/
├── 10-case-studies/
├── diagrams/
└── resources/

🎨 Each Topic Contains

  • Problem Statement
  • Requirements
  • Architecture Diagram
  • Components
  • Data Flow
  • Database Design
  • APIs
  • Scaling Strategy
  • Bottlenecks
  • Trade-offs
  • Interview Questions

💻 Tech Stack

  • System Design
  • Distributed Systems
  • Microservices
  • AWS
  • Docker
  • Kubernetes
  • Redis
  • Kafka
  • PostgreSQL
  • MongoDB
  • REST
  • GraphQL

🚀 Who Is This Repository For?

  • Software Engineers
  • Backend Developers
  • Full Stack Developers
  • Engineering Students
  • Interview Preparation
  • System Design Enthusiasts

⭐ Learning Philosophy

Great software engineers don't memorize architectures.

They understand:

  • Why a system is designed a certain way
  • The trade-offs behind every decision
  • When to use a technology
  • When not to use it

This repository focuses on building that mindset.


🤝 Contributions

Contributions, suggestions, and discussions are always welcome.

If you find this repository useful:

⭐ Star the repository

🍴 Fork it

📢 Share it with fellow engineers


📌 Connect With Me

GitHub: CodeWithIshwar-dev | Ishwar Chandra Tiwari

Building in public 🚀

Learning one system at a time.

system-design-thinking/ │ ├── README.md ├── 01-system-design-basics/ ├── 02-scalability/ ├── 03-networking/ ├── 04-load-balancing/ ├── 05-caching/ ├── 06-databases/ ├── 07-storage/ ├── 08-messaging-queues/ ├── 09-microservices/ ├── 10-security/ ├── 11-cloud/ ├── 12-observability/ ├── 13-design-patterns/ ├── 14-case-studies/ │ ├── bookmyshow/ │ ├── whatsapp/ │ ├── uber/ │ ├── netflix/ │ ├── twitter/ │ ├── instagram/ │ ├── youtube/ │ ├── payment-gateway/ │ └── url-shortener/ ├── diagrams/ ├── images/ └── resources/

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Purpose: design mindset, not diagrams only

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