Hands-On Enterprise Application Development with Python

Using thread pools for handling incoming connections

As we saw in the previous section, we do not need an infinite number of threads to handle the incoming clients. We can manage with a limited number of threads to handle a large number of clients. But, how do we implement this thread pooling in our application. As it turns out, it is quite easy to implement the thread pool functionality with Python 3 and the concurrent.futures module.

The following code sample modifies our existing TCP server example to use a thread pool, instead of arbitrarily launching an infinite number of threads to handle the incoming client connections:

# simple_socket_threadpool.py#!/usr/bin/python3from concurrent.futures import ThreadPoolExecutorimport socket# Let's ...