Jakub Kubrynski
Devskiller co-founder
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For over 14 years of his professional career, he worked as a software developer, architect, team leader, and manager. He gained experience working on both sides of the delivery process, as a vendor and as a client. Today, he is a speaker, trainer, and co-founder of the online technical assessment platform, Devskiller. Open-source contributor, co-author of the Spring Cloud Contract project.
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JVM dive for mere mortals
For developers using Java on a daily basis, JVM is a pretty important component - it runs our software. But it is usually treated like a magic box, which takes code in and produces business features. Have you ever thought about what you are missing with such an approach? During my talk, I'll cover some of the JVM internals which should not be avoided even during regular Java development. We'll discuss real differences between primitives and their wrappers, talk about the cost of using lambdas and streams, see what really gets erased in the type erasure process and what we can gain by removing stacktrace from our business exceptions.
Microservices - the naked truth of maintainability
It's easy to do a proof-of-concept but hard to make something "production-ready". Maintainability is complex in distributed systems, and become extremely complicated in the microservices. In this talk, we'll take a look at the common traps producing a gap between "should work" and "works." We'll also talk about costs which come with the most famous (at least at the conferences) architecture.
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