Building a Real-Time Stock Price Tracker with .NET 8 GraphQL and React: Market Pulse

This article provides a comprehensive guide to building Market Pulse, a real-time stock price tracking application using modern web development technologies. Leveraging .NET 8 and GraphQL with Hot Chocolate, the backend fetches live market data from the Finnhub API and delivers it to clients through efficient GraphQL subscriptions. On the frontend, React with TypeScript and Apollo Client is used to create a responsive user interface that dynamically displays stock prices for major companies like Apple, Microsoft, Amazon, and Bitcoin. By following this step-by-step tutorial, developers will learn how to integrate .NET, GraphQL, and React to build powerful, real-time web applications.