Using real-time data in Angular with SignalR

The evolution of web applications from static data to real-time functionality has become essential to meet user expectations for instant updates, particularly in scenarios like messaging and price checking. For .NET developers with Angular knowledge, implementing real-time messaging is simplified through the use of SignalR, which automates the selection of connection methods such as WebSockets, server-side events, or HTTP long polling, based on client support. This article demonstrates the integration of SignalR with Angular to create a real-time food ordering app for restaurant staff, showcasing real-time communication between waitstaff and kitchen staff. The setup involves creating server-side applications with .NET, using a SQLite database, and setting up SignalR hubs for real-time updates, while the client-side application uses Angular to manage and display dynamic data. The article also explores adding authentication through JWT tokens to secure the customer-facing components, ensuring that only authenticated users can interact with the app. The full code is available on GitHub, providing a comprehensive guide for developers aiming to build real-time applications with Angular and SignalR.