The Thread Pool pattern

First, it’s important to understand what a thread is. In computing, a thread is the smallest unit of processing that can be scheduled by an operating system.

Threads are like tracks of execution that can run on a computer at the same time, which enables many activities to be done simultaneously and thus improve performance. They are particularly important in applications that need multitasking, such as serving multiple web requests or carrying out multiple computations.

Now, onto the Thread Pool pattern itself. Imagine you have many tasks to complete but starting each task (which means in this case, creating a thread) can be expensive in terms of resources and time. It’s like hiring a new employee every time you have a job to do and then letting them go when the job is done. This process can be inefficient and costly. By maintaining a collection, or a pool, of worker threads that can be created for once and then reused upon several jobs,...