Are you writing a Qt application that uses the network? Are you e.g. using data from Facebook, Twitter or Instagram? Then this presentation might help you get data from the Web faster. Usually, performance improvements on the network layer outperform improvements in e.g. the file system by around one order of magnitude. Often network speedups are in the range of hundreds of milliseconds, which is very hard or even impossible to achieve in any other layer of the Qt framework. Improving network latency will often create a speedup that is immediately visible.