🚀 Kedis — In-Memory Key-Value Store

Kedis is a lightweight Redis-inspired in-memory database built to explore core system design concepts such as data storage, command parsing, and performance optimization.

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🧠 Motivation

Modern systems rely heavily on fast, in-memory data stores like Redis. Kedis is built to understand how such systems work internally by implementing key components from scratch.

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⚙️ Features (Planned)

• 🔑 Basic key-value operations:

  • SET key value
  • GET key
  • DEL key
  • EXISTS key

• ⏳ Expiry support:

  • EXPIRE key seconds
  • TTL key

• 🧩 Modular architecture:

  • Command parsing layer
  • Execution layer
  • Storage layer

• 💾 Persistence (optional):

  • Save and load data from disk

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🏗️ Architecture

User Input → Parser → Command Handler → In-Memory Store → Response

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📁 Project Structure

kedis/
│
├── main.py          # Entry point (CLI loop)
├── parser.py        # Parses user commands
├── commands.py      # Command implementations
├── store.py         # In-memory data storage
├── utils.py         # Helper functions
└── README.md

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🚦 Getting Started

Prerequisites

• Python 3.x

Run the project

python main.py

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💡 Example Usage

SET name Karthik
GET name
DEL name
EXISTS name

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🔍 Learning Goals

This project focuses on:

• Understanding in-memory data systems
• Designing modular software architecture
• Implementing command-driven interfaces
• Exploring performance trade-offs in system design

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🚀 Future Improvements

• 🔌 TCP server support for multiple clients
• ⚡ Concurrency handling
• 📊 Advanced data structures (lists, sets, etc.)
• 🧠 Optimizations inspired by Redis

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🤝 Contributing

This is a personal learning project, but suggestions and improvements are welcome.

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📌 Author

V SS Karthik

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“Built to understand systems, not just use them.”