What methods of stream data processing do you know?

In C#, the following methods and approaches are often used for processing streaming data:

• Streams — a fundamental way to work with sequential data, such as FileStream, MemoryStream. They allow reading and writing data in parts.
• Asynchronous read/write using ReadAsync and WriteAsync methods for non-blocking data processing.
• Reactive Extensions (Rx) — a library for reactive programming that enables processing of event and data streams using LINQ-like operators (Select, Where, Buffer, etc.).
• IAsyncEnumerable<T> and the await foreach operator — for asynchronous iteration over data streams.
• Dataflow (TPL Dataflow) — a library for building data processing pipelines with blocks that can process data in parallel and asynchronously.

Example of asynchronous reading from a stream:

using (var stream = new FileStream("file.txt", FileMode.Open))
{
    byte[] buffer = new byte[1024];
    int bytesRead;
    while ((bytesRead = await stream.ReadAsync(buffer, 0, buffer.Length)) > 0)
    {
        // Processing the read data
    }
}