Imagine you're running a popular delivery service. Every time an order comes in, you hire a new driver, give them the package, and send them on their way. Once the delivery is done, you fire them. This sounds incredibly inefficient, doesn't it? The overhead of hiring and firing for every single task would be enormous.

A much smarter approach would be to hire a fixed number of drivers at the start of the day. These drivers form your "pool" of workers. When an order comes in, you simply hand it to an available driver. If all drivers are busy, the new order waits in a queue until a driver becomes free.

This is the core idea behind the Thread Pool Pattern.

What is the Thread Pool Pattern?