In ASP.NET applications, ThreadPool is a collection of worker threads managed by the runtime to efficiently execute tasks concurrently. It optimizes performance by reusing existing threads and minimizing thread creation overhead.
ThreadPool maintains a pool of idle threads that can be used for executing queued tasks. When a task arrives, it’s assigned to an available thread or waits in the queue if all threads are busy. Once completed, the thread returns to the pool, ready for another task.
ASP.NET uses ThreadPool for handling incoming requests, asynchronous operations, and background tasks. The number of threads in the pool affects application performance. Insufficient threads may cause request queuing and slow response times, while excessive threads increase context switching overhead and memory consumption.
To optimize performance, developers should avoid blocking ThreadPool threads with long-running synchronous operations or I/O-bound tasks. Instead, use asynchronous programming patterns and Task-based APIs to free up threads for other tasks.
