Lively

Lively is a real-time location tracking platform that visualizes the live positions of connected users on an interactive map. As users move, their positions stream to every connected client with minimal latency.

Under the hood it uses a high-throughput event streaming architecture: location events flow through Apache Kafka, a Bun-powered backend fans them out over WebSockets, and a React frontend renders the moving markers. The project demonstrates how event streaming infrastructure typically found in large distributed systems applies to a live consumer experience.