cache0

cache0 is a lightweight, persistent Key-Value store built from scratch in C++. It is designed to demonstrate core systems programming concepts including memory management, file persistence (RAII), and the Standard Template Library (STL).

Features

• In-Memory Speed: Uses std::unordered_map for $O(1)$ average time complexity on lookups.
• Persistence: Automatically saves data to disk on exit and loads on startup (RAII pattern).
• Safety: Utilizes std::optional to handle missing keys gracefully.
• Modern C++: Written in C++17.

Getting Started

Prerequisites

• A C++ compiler supporting C++17 (GCC, Clang, or MSVC).

Directory Structure

Cache0/
├── include/
│   └── cache0.hpp      # The Product (Header-Only Library)
├── src/
│   └── main.cpp        # The Example/Demo file
├── tests/
│   └──test_cache0.cpp  # Unit Tests
├── .gitignore          # The ignore file
├── .github/            # The CI workflow
└── README.md           # Readme File

License

This project is licensed under the MIT License - see the LICENSE file for details.