What is async-await in ASP.NET Core?

Can you explain what async-await is in ASP.NET Core?

Sure! Async-await is a programming pattern that allows you to write asynchronous code in a more readable way. It helps improve the responsiveness of applications by not blocking the main thread.

How does it improve performance in web applications?

By using async-await, you can handle multiple requests concurrently without waiting for each one to complete. This reduces the time users spend waiting for responses, leading to a better user experience.

Can you give me a simple code example?

Absolutely! Here's a basic example:

public async Task<IActionResult> GetDataAsync() {
    var data = await _dataService.GetDataAsync();
    return Ok(data);
}

This method fetches data asynchronously without blocking the thread.

Are there any drawbacks to using async-await?

Yes, while async-await is powerful, it can introduce complexity in error handling and debugging. It's important to manage exceptions properly to avoid unhandled task exceptions.