Thanks Ali Ghodsi for being so open, honest and developer-ish during our fireside chat last night (Poland time). I really enjoyed it very much and hope for more similar chats in the future. I was nominated to the Databricks Beacons program almost a year ago (which I consider similar to…

This post describes the reasons to run a brand new Warsaw Data Engineering meetup group (and shutting down the existing group Warsaw Scala Enthusiasts). Join us! I’ve been thinking about this for some time, but somehow couldn’t find enough courage. As new resolutions for the new year 2020 pilled up…

To Different Organization and GitHub Pages — For now… Until I figure out how to make all “The Internals Of” online books available under a single root domain, e.g. books.japila.pl. Consider it a WIP and part of my resolutions for 2020. Having said that, as of today, the repository with the sources of “The Internals Of Apache…

tl;dr Stay away from Sphinx and RST. I’m coming from Markdown and Asciidoc markup languages and can’t think of any reasons why I should keep writing documentation using reStructuredText (RST) markup language. After just a couple of days I felt as if I was going backwards. I’m quite surprised how…

Thanks Jakub Wszolek, Mariia Ruban and the entire conference crew for DataMass Summit 2019 conference in Gdansk, Poland on October 4th, 2019. I was invited as a speaker and enjoyed it a lot. Not only could I give the talk about “Modern Stream Processing Engines Compared — Kafka Streams VS…

I speak French. Not really. But I will soon. I wish I could write “I learn French” actually, but that’s something I haven’t learned yet during my lessons. I use Duolingo mobile app and I enjoy it a lot. It gives me all I wanted for a French novice like…

When: 13–15.02.2019 Where: Győr, Hungary Just a few days before the winter holidays with my family I got a call to host an Apache Kafka Workshop in Győr, Hungary. …

That’d been not so long since the first workshop with Apache Kafka and Kafka Streams when I was asked to run a workshop with Apache Kafka. I’ve had more and more workshops with Apache Kafka recently (mostly for developers), but the recent inquiry was completely different — I had to…

I could not have dreamt of a better shout-out after my recent work with Kafka Streams that I’ve just received from the one and only Gwen Shapira from Confluent (the company behind Apache Kafka and Kafka Streams). I’m an independent consultant specialising in Apache Spark with some focus on…