How Can Async/Await Maximize Efficiency When Handling Multiple Concurrent API Operations?

Use Async/Await to achieve efficient multi-task concurrency

When using an asynchronous API client (as mentioned in the question) where each operation returns a Task or a specific type of Task, it is crucial to choose an appropriate concurrent task execution method.

Problem Overview

The question shows two common methods of using async/await to perform multiple tasks concurrently:

1. Parallel.ForEach combined with Wait: Use Parallel.ForEach to run tasks in parallel, but use Wait to block each thread to complete each operation.
2. Task.WaitAll: Use Task.WaitAll to wait for all tasks to complete, blocking the current thread until all operations are completed.

Recommended plan

Both of the above solutions do not fully utilize the asynchronous features of the API client. For maximum efficiency, the following methods are recommended:

<code>public async Task DoWork() {

    int[] ids = new[] { 1, 2, 3, 4, 5 };
    await Task.WhenAll(ids.Select(i => DoSomething(1, i, blogClient)));
}</code>

Advantages of Task.WhenAll:

• Execute tasks in parallel without blocking threads.
• Allow (if necessary) the continuation of the asynchronous process through the await keyword.
• Efficiently handle asynchronous operations while maximizing concurrency.

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