How to efficiently use server resources?

Question

Programming

I decided to practice writing client-server applications. On the server we have something like this:

while True:
            server.acceptNewClients()
            server.handleQueries()

However, it turns out that such a server unnecessarily loads the system even without a single client. At startup, the coolers immediately accelerate. Added a delay to the loop:

while True:
            server.acceptNewClients()
            server.handleQueries()
            time.sleep(0.1)

Now there is no unnecessary load, but such a server will be inefficient with a large number of clients.
Is there any universal solution?

Answer 1

you need to use the operating system messaging mechanism i.e. e.g. epool, kqueue etc. - implemented in libevent, libev libraries
In such cases, processing occurs only after receiving data, and while there is no data, the system waits