It's a little bad for newcomers to define these as one being better than the other. In reality it's a trade-off. And multiplexed/async are not really "I/O types

It's a little bad for newcomers to define these as one being better than the other. In reality it's a trade-off. And multiplexed/async are not really "I/O types" but ways to handle the two I/O types. In reality everything is either blocking or non-blocking and you always need to consider which option is better for your current usecase. Even the most fancy of web frameworks won't take that out of the equation.