RJUG #18

18:00 Networking

18:30 Jarek Pałka - If everything seems under control, you're just not going fast enough.

Have you ever wondered what it takes to make your software run faster?

Have you ever wondered what it takes to become a "performance engineer"?

Or you are doing so-called "adhoc" performance tuning, living your life from

one outage to another severity 1 incident? And you have this strange feeling, that this is

not like things should be?

You have never cared about how your code performances. You knew it was always

problem with database (or somebody else's problem, blaming others is easy).

It is just hard to admit that you don't know how to make your code run faster.

Let me be your guide on this trip. I will show you how to, accompanied by tools

like JMH, JFR and flamegraphs, make your code run faster. We will not only focus on tooling but also on the performance tuning process. We are going to talk about times when benchmarks lie,

why data sets are crucial and when more doesn't mean faster.

During the whole presentation, we will be refactoring and improving the

performance of one, not so trivial code example. Something that everybody knows and something that is fun to implement on your own.

Benchmark, profile, refactor, repeat.

BIO

Od ponad 15 lat w branży IT, jako administrator baz danych, programista, architekt, manager i „inżynier od spraw katastrof”.

19:30 Dariusz Zbyrad: GraalVM - rewolucja w świecie Javy

Description: TBD

Bio:

Dariusz Zbyrad - Programista Javy w firmie jCommerce. W codziennej pracy stawia na minimalizm i czysty kod wykorzystując do tego najnowsze technologie. Toleruje JavaScript, uwielbia górskie wycieczki i elektronikę, budując czasem coś z niczego. Zakochany w analizie danych. Twitter: https://twitter.com/giverPL

If you would like to share something among the community or help Us, do not hesitate to poke us :) Help is always welcome.

Huge thanks to VirtusLab (http://www.virtuslab.com) for sponsoring the event - venue, drinks & video (https://www.youtube.com/channel/UC_G8Ne1ZVfPXFplKOED94Ew?view_as=subscriber).