Incredibly simple real-time web for ASP.NET
Supported on Windows, Linux, and macOS
Today's modern apps are expected to deliver up-to-date information without hitting a refresh button. Add real-time functionality to your dashboards, maps, games and more.
What is real-time functionality? It's the ability to have your server-side code push content to connected clients as it happens, in real-time.
You can add a SignalR hub to an ASP.NET app, alongside your pages and APIs. The simple programming model integrates seamlessly with other ASP.NET features like dependency injection, authentication, authorization, and scalability.
While chat is often used as an example, you can do a whole lot more. Any time a user refreshes a web page to see new data, or the page implements Ajax long polling to retrieve new data, it's candidate for using SignalR.
SignalR also enables completely new types of applications that require high frequency updates from the server, e.g. real-time gaming.
SignalR will use WebSockets when it's available, and gracefully falls back on other technologies when it isn't, while your application code stays the same.
Like the rest of ASP.NET, SignalR was built for high performance and is one of the fastest real-time frameworks around.
Scale out across servers with built-in support for using Redis, SQL Server, or Azure Service Bus to coordinate messages between each instance.
You can host the SignalR app yourself, or use Azure SignalR Service for a fully managed platform. Azure SignalR Service handles concerns like performance, scalability, and availability and has a 99.9% service-level agreement.