How to Build a Real-Time Crypto Dashboard in Java (Quarkus + Redis)

Time-series data is everywhere: server metrics, IoT sensors, and stock prices. Unlike traditional databases, time-series databases excel at handling continuous streams of timestamped data with efficient compression. In this tutorial, we’ll build a production-ready application that captures live crypto price data from Binance, stores it using Redis TimeSeries , and visualizes it via an interactive Quarkus dashboard. Disclaimer: Crypto markets are used here purely as a source of high-frequency data. This architecture applies equally to IoT telemetry or system metrics. The Architecture Our application follows a reactive data flow to ensure low latency and high throughput: Ingestion: Quarkus WebSocket client connects to Binance. Storage: Redis TimeSeries handles raw ticks and automatic downsampling (compaction). API: REST for historical data, SSE (Server-Sent Events) for live updates. UI: A vanilla JS dashboard using Chart.js. 1. Project Setup We'll use Quarkus Dev Services, which automati