🎃 System Design & LLD Hub

Welcome to System Design & LLD Hub — your open-source playground for Hacktoberfest 2025! 🚀

This repository is for developers who love designing scalable systems and building clean low-level designs.
Whether you want to share UML diagrams, production-ready code, or both — this repo welcomes every kind of contribution! 💥

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📁 Repository Structure

lld/
│   ├── statePattern/
│   │   ├── code/
│   │   └── uml/
│   ├── builderPattern/
│   │   ├── code/
│   │   └── uml/
│   └── ...
└── projects/
    ├── instagram/
    │   ├── architecture/
    │   └── diagrams/
    ├── uber/
    │   ├── architecture/
    │   └── diagrams/
    └── ...

🧩 Each project has its own folder. Inside it, contributors can add either:

• code/ → for LLD implementations or logic
• uml/ → for UML, architecture, or class diagrams
• or both if they wish to contribute the full design package 💪

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🚀 How to Contribute

1. Fork this repository 🍴
2. Clone your fork:

   git clone https://github.com/<your-username>/System-Design-LLD-Hacktoberfest.git
   cd System-Design-LLD-Hacktoberfest

3. Pick a section to contribute:
   • lld/projects/<project-name>/code → Add your LLD code
   • lld/projects/<project-name>/uml → Add UML/class diagrams
   • lld/<lld-name>/code → Add your LLD code
   • lld/<lld-name>/uml → Add UML/class diagrams
4. Create a new branch for your contribution:

   git checkout -b add-<project-name>

5. Add your files (code, UML, or both):

   git add .
   git commit -m "Added LLD for Parking Lot (Code + UML)"
   git push origin add-<project-name>

6. Open a Pull Request 🎯
   • Title format: Added: <Project Name> (Code / UML / Both)

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🧠 Contribution Guidelines

✅ You can contribute:

• Only Code (in code/ folder)
• Only UML / Diagram (in uml/ folder)
• Both Code and UML for complete LLD/System Design

🔹 Keep code clean, properly formatted, and commented
🔹 Add short descriptions or README inside your project folder if needed
🔹 Avoid duplicate entries — check existing folders before adding

🚫 Please don’t:

• Add unrelated or spam files
• Copy existing designs without changes
• Submit incomplete PRs without purpose

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🌟 Example Contribution

If you’re adding LLD for Snake & Ladder:

projects/
└── lld/
    └── snake-ladder/
        ├── code/
        │   └── snake_ladder.cpp
        └── uml/
            └── snake_ladder_uml.png

You can contribute only snake_ladder.cpp or only snake_ladder_uml.png, or both — completely your choice.

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🏷️ Hacktoberfest 2025

🎃 This repository is proudly part of Hacktoberfest 2025!
Contribute meaningfully, open 6 quality PRs, and earn your swag while growing your open-source footprint.

Let’s make this repo a goldmine of LLDs and System Designs for every developer out there! 💻

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🧑‍💻 Code of Conduct

• Be respectful 💬
• Be helpful 🤝
• Encourage learning and collaboration 🌱
• No spam, no negativity — only community vibes ✨

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💬 Need Help?

• Open an issue for any question or suggestion
• Review existing PRs for examples
• Share the repo to help others learn & contribute!

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🥂 Happy Coding & Happy Hacktoberfest!
Let’s build the biggest open design hub together. 💥