Victor Rentea
Java Champion and Trainer
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Victor is a Java Champion and an Independent Trainer delivering intense webinars for dozens of companies worldwide. He loves Simple Design, Refactoring, and Unit Testing, about which he regularly talks at top conferences, but also to the Bucharest Software Craftsmanship Community that he founded. On victorrentea.ro you can find his blog, talks, training curriculum, live masterclasses, and social channels.
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Unlocking Refactoring - Blockers and Code Smells
The only way to survive in a codebase is by refactoring continuously. We know that since the Extreme Programming days. But what stops us from doing so today? In this talk, Victor summarizes what he learned discussing Clean Code and Refactoring with hundreds of teams throughout the world. You'll find ideas to tackle a broad spectrum of factors: technical, cultural, psychological, emotional, social, and even political. Using these you might unlock the freedom to refactor for you and your colleagues.
After this roundtrip, the talk briefly overviews several of the most dangerous code smells in the projects today: God Class, Duplicated Code vs Divergent Code, Temporal Coupling, Middle Man, Speculative Generality, Mutable Long-Lived State, Comments, and more. For each of them we’ll discuss a typical workaround, plus several subtleties and variations.
Profiling your Java Application - A Beginner’s Guide
Professional performance optimization always starts with tracing the root cause of the bottleneck, to make sure we fix the correct problem. Trying to optimize the program by ‘guessing’ what can cause the performance issue is known as Shotgun Tuning, and typically results in messy code, wasted effort, and lots of frustration. In this talk, we’ll explore the best 3 free tools for profiling a Java application: Micrometer, Glowroot, and Mission Control and we’ll discover the power of a profiler built-in already into your JVM – the Java Flight Recorder. Using these tools, we'll trace typical issues like connection/thread starvation, long-running methods or repeated queries, TLAB issues, lock contention, and more.
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