# Thread Pool

A runtime-managed group of reusable worker threads.

## What is **Thread Pool** in C#?

**Thread Pool** — A runtime-managed group of reusable worker threads.

```csharp
class OrderWorker
{
    void Queue(WaitCallback work)
    {
        ThreadPool.QueueUserWorkItem(work);
    }
}
```

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Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/thread-pool