miniredis-cpp

A Redis-like in-memory key-value store written in C++ for learning systems programming.

Goal: by building a tiny version from scratch.

Why this project?

My goal for this project is to expose myself to C++, being proficient in C, I want to utilize this towards a more object-oriented language. This was also created to gain a better understanding of how a real-world database server works under the hood

This project covers:

• Network programming – sockets, event loops, handling multiple clients.
• Concurrency - multi-threaded request handling with 'std::thread'
• Systems-level C++ – working directly with POSIX APIs

This is a learning project, not production software.

Features (planned to update as implemented)

• TCP server that accepts multiple concurrent clients
• Persistent connections (multiple commands per session)
• Supported Commands (atm)
  • PING - returns PONG
  • ECHO <message> - returns <message>
  • QUIT - closes the connection

Tech stack

• C++
• POSIX sockets
• STD::thread for concurrency
• macOS / Linux

Building

g++ -o server server.cpp -pthread
g++ -o client client.cpp

Usage

Start the server:

./server

In a new terminal window

./client

Then enter any command into the client terminal to get the result

EXAMPLE OUTPUTS FOR INPUTS

PING
PONG
ECHO hello world
hello world
QUIT

Planned Features

• SET and GET commands with hash tables
• key expiration
• nonblocking i/o with an event loop