System Design - High Level Design (HLD)

This is a System Design Repo where you can get notes and use cases of HLD which will help you guys out, in preparing for system desing.

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📚 Topics Covered

• Networking & Web Basics
• HTTP/HTTPS Deep Dive
• Load Balancers
• Caching
• Database Design (SQL/NoSQL, Sharding, Indexing)
• Asynchronous Communication (Kafka, RabbitMQ)
• File Storage (Block/Object, S3, Presigned URLs)
• Rate Limiting & Throttling

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🧠 Why This Repository?

I started this repository to:

• Consolidate all system design notes in one place.
• Build strong fundamentals by creating real-world use-case-driven notes.
• Help others preparing for backend interviews.

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🔧 Tech Stack / Tools

• Markdown (.md) for documentation
• GitHub for version control
• Visual Studio Code for writing notes

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🚀 Upcoming Plans

• Add diagrams using Excalidraw / draw.io
• Solve real-world design questions (e.g., Design URL Shortener, Rate Limiter, WhatsApp)
• Create structured folders per topic

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🙋‍♂️ Who Am I?

I'm Devraj Kataria, a backend developer transitioning from support to development. Currently building my fundamentals in System Design and sharing my journey here.

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📌 Note

This is a personal learning repo — corrections, suggestions, and PRs are welcome!