Skip to main content


Showing posts from February, 2019

Designing Data-Intensive Applications: my favourite book of last year

Warsaw Old Town Martin Kleppmann, the author of Designing Data-Intensive Applications: The Big Ideas Behind Reliable, Scalable, and Maintainable Systems wrote a wonderful, comprehensive book. I consider this to be my most valuable reading of 2018, even though the book is almost 2 years old now. Martin proves that great bestsellers in the programming industry aren’t about shiny new frameworks and buzzwords. Data-Intensive Applications is a solid piece about the fundamentals of computer systems, especially from the data manipulation perspective. This book introduces and explains all topics related to data storage, retrieval and transmission. That doesn’t sound very exciting, does it? However, expect very thorough (600+ pages!) and enjoyable journey through databases, protocols, algorithms and distributed systems. In the first chapter : “ Reliable, Scalable, and Maintainable Applications ” the author describes the environment in which our systems live nowadays. What are the poss

RxJava vs Reactor

Summary: Stick to whichever library you already have on your CLASSPATH. If you get a choice, Reactor is preferable, RxJava 2.x is still a good alternative In case you’re on Android, then RxJava 2.x is your only choice Table of contents: API Type-safety Checked exceptions Testing Debugging Spring support Android development Maturity Summary Many people ask me, which library to use in their new projects (if any). Some are concerned that they learned RxJava 1.x and then 2.x came along, and the Reactor. Which one should they use? And some also wonder, what’s with this new java.util.concurrent.Flow ? Let me clarify a few things. First of all, both versions of RxJava and Reactor are quite similar from a functional perspective. If you know 1.x or 2.x, Reactor will be very familiar, though you still have to learn about the differences. Secondly, Flow class (a set of interfaces, to be precise) is part of a reactive streams specification, bundled into JDK. This spe