ASP.NET Core Web API .NET 8 2024 – 9 introduces asynchronous programming with Async/Await for improved performance.

Async/Await is like the secret weapon in the world of slow code. It’s the backbone of why servers are so fast today. By adding async to almost any piece of code, you can execute multiple pieces of code at the same time, making your code fast and cool. Just add async, return a task, and add await to make your boring synchronous code into fast, interruptible async code. #CodingNinja 🚀

🐢 Understanding the Nature of Slow Code

So, a lot of the code you write is naturally slow due to database and network calls. Async is a secret weapon to deal with this slowness. When we make a database call or a network request, we have to reach into an outside system, which is what makes these actions some of the slowest in computing.

How Async Works

Using async code allows us to execute multiple pieces of code at the same time, making our servers faster. Adding ‘async’ to a function and using a ‘task’ as the return type helps us implement async code in C#.

Adding Async to Functions

To make a function async, we simply add the ‘async’ keyword to it. Then, we set the return type as ‘task’ to ensure that the function returns a task object. We also use the ‘await’ keyword to make asynchronous code run only where we specify it, allowing the code to interrupt other processes.

"Adding async to a function doesn’t just make it fast, it allows code to execute asynchronously while other slow code is being executed."

Implementing Async Code in C# and VS Code

Inside the controller in VS Code, we can start turning synchronous code into fast async code. By adding ‘async’ to our functions, setting the return type as ‘task’, and using ‘await’ where necessary, we can effectively implement async code in C#.

Modifying Functions for Async

We can make functions async by adding the ‘async’ keyword and setting the return type as ‘task’. Then, for any database queries, we need to use ‘await’ to ensure the code runs asynchronously.

Testing the Async Implementation

After converting our code to async, we can test it to ensure that everything is working correctly. By running the code and performing various actions, such as GET, POST, PUT, and DELETE requests, we can verify the effectiveness of implementing async in our code.

Optimizing Repository with Async

After successfully implementing async code in the controller, the next step is to optimize the repository using async functions. This will further improve the performance of our code and make it more efficient.

Key Takeaways:

  • Using async can significantly improve the performance of code with database and network calls.
  • Implementing async involves adding the ‘async’ keyword, setting return type as ‘task’, and using ‘await’ for async execution.
  • Testing and verifying the functionality of async code is crucial for ensuring its effectiveness.

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