CROJ

CROJ is a distributed Online Judge (OJ) system written in Rust, designed for secure, scalable, and efficient code evaluation.

Features

• 🚀 Distributed Judging: Leveraging Docker to run code evaluation tasks across distributed nodes.

• 🔒 Secure Execution: Enforces strict resource constraints using seccomp and setrlimit, ensuring isolation and safety.

• 🦀 Built in Rust: High performance, memory safety, and robust concurrency.

Highlights

• Language agnostic: Supports judging submissions in multiple languages via containerized environments.

• Horizontal scalability: Easily add judge nodes to scale with load.

• Fine-grained sandboxing: Seccomp and setrlimit enforce CPU, memory, and syscall restrictions per submission.

• Modular design: Cleanly separated components for scheduler, judge daemon, submission frontend, etc.