I've been doing competitive programming for a while, but I always felt that existing platforms lacked the intensity of real-time, head-to-head algorithmic combat. So, I built Elonode. Elonode is an intuitive, real-time 1v1 competitive programming arena where you get matched with opponents based on a dynamic ELO scaling system. Under the hood, I wanted to ensure zero-latency duels and strict execution isolation: Backend: Written in Go for handling highly optimized concurrent WebSocket pipelines. Code Execution: Powered by Judge0 running in isolated, containerized micro-VMs to safely compile and execute C++, Rust, Go, Python, etc. Infrastructure: Provisioned on AWS/Render with PostgreSQL. Frontend: Next.js / Tailwind. The matchmaking evaluates your performance using percentile-based ELO ratings (from Newbie to Grandmaster) and checks for resource limits (TLE, MLE) just like standard CP platforms, but in a live multiplayer environment. I'm still actively working on building out the heuristic anti-cheat system (analyzing ASTs for plagiarism). Would love for you to try a duel or tear apart the architecture/UI. Any feedback or harsh critique on the tech stack is highly appreciated!

ELONODE

Real-time 1v1 competitive programming arena.

Real-time 1v1 competitive programming arena.