Tech Stack

Backend

Core language and Framework

• Rust: A high-performance memory-safe language
• Axum: A Rust Web framework based on Tokio

Database and Storage

• PostgreSQL: A persistent database that interacts via SeaORM
• Valkey: Used for caching and accessed via fred.rs

Message queues and Asynchronous processing

• NATS: A lightweight message queue for communication between components

Containers and Orchestration

• Kubernetes: The dynamic environment support for challenges via kube-rs

Security and Authentication

• Argon2: Used for password hashing
• JWT: Used for user authentication
• Ring & Rustls: Provides encryption functionality

Script engine

• Rune: A secure embedded scripting language for submission checkers

Monitoring and Logging

• OpenTelemetry: For distributed tracing and monitoring
• Tracing: Used for structured logging

Frontend

Core framework and Language

• React: Used for building user interfaces
• TypeScript: Used for type-safe JavaScript development

Build tools

• Vite: A modern front-end build tool

UI Components and styles

• Tailwind CSS: A CSS framework that prioritizes practicality
• Radix UI: A style-free and accessible UI component
• Lucide React: Icon library

Status management and Data fetching

• Zustand: A lightweight state management library
• Ky: A data fetching library based on Fetch
• TanStack Query: A server-state management and caching library

Form processing and Validation

• React Hook Form: Form processing library
• Zod: Type validation library

Internationalization and Localization

• i18next: Internationalization Framework

Charts and Visualization

• Recharts: A chart library based on React