CANCELLED: If everything seems under control, you’re just not going fast enough

Ever wonder what you need to do to make your code run faster? Ever wondered how to become a “performance engineer”? Perhaps you do performance from time to time, in between one failure to the next severity 1 incident? And you have that strange feeling that you are doing it wrong? Perhaps you’ve never bothered to see how fast your code works. Or maybe it’s just difficult to admit that you don’t know how to improve your code? It has been known for centuries that this is always a database problem (or someone else’s problem) ;). During this presentation, you will learn how to become a programmer aware of the performance of your code. We will focus not only on tools like JMH. JFR and flamegraphs, but also on the process of optimizing performance. We will talk about how good quality, so-called “clean code” affects performance, why the data sets you use to benchmark your code are key to success, and when more does not mean faster.During the whole presentation, we will refactor and improve one, not-so-trivial example – something that all of us know, like and know how to implement.“Benchmark, profile, refactor, repeat”