Scalable Code Execution Engine

Overview

A full-stack online code execution and judging platform built with React, Node.js, Express, MongoDB, and Docker-based sandboxing.
It allows users to write code, run it in a secure container, and attempt coding problems with automated evaluation.

Features

Code Execution

• Supports multiple languages (C, C++, Python, JavaScript).
• Executes code in isolated Docker containers for safety.
• Captures stdout, stderr, and execution time.

Coding Problems

• Browse problems with title, difficulty, and description.
• Submit code for evaluation.
• Judge runs code using predefined test cases.

Clean UI

• Monaco-based code editor
• Output panel (stdout, stderr, time)
• Problem page with test cases & submit button

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Running Locally

Clone

git clone cd project

Install Client

cd client npm install npm run dev

Install Server

cd server npm install node server.js

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Contributing

Pull requests are welcome. For updates, open an issue.

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Docker-Based Execution

Each code run spins up a new lightweight container like this:

docker run --rm -m 256m --cpus="1" \
   -v /server/temp:/app \
   sandbox-image python3 code.py