How to use IAsyncEnumerable with Blazor Stream Rendering

With .NET 8, Blazor gains first-class support for stream rendering via IAsyncEnumerable and StreamRenderingAttribute, enabling faster Time to First Byte (TTFB). IAsyncEnumerable allows data to be consumed as it arrives rather than waiting for full materialization. For Blazor components, three key rules apply: maintain a collection variable to append to, await the IAsyncEnumerable inside OnInitializedAsync, and call StateHasChanged to flush HTML chunks to the client. The same chunked transfer approach also works for Minimal API endpoints. Performance gains depend on the speed of underlying dependencies like databases.