Aron

The best debugging session I ever had was turning on -verbose:gc and watching the application reveal its own sins in real time. #JVM #GarbageCollection #JavaPerformance #Java

A thread pool that's too small starves. One that's too large thrashes. Configuring the right size is part math, part experience, and part accepting that production will correct you anyway. #Java #ThreadPool #Concurrency #JVM

The first time I used Project Reactor I thought I was reading a physics paper. The second time I thought I was debugging one. By the third, I just accepted the timeline. #ProjectReactor #Java #Reactive #BackendDev

Lombok is either the best quality-of-life tool in the Java ecosystem or a way to hide problems in plain sight. The answer depends entirely on who's reviewing the code. #Lombok #Java #CleanCode #CodeReview

There is a special kind of respect reserved for developers who maintain Java batch systems that have been running flawlessly since 2004. Silent professionals. #Java #BatchProcessing #Legacy #SoftwareEngineering

Java generics: expressive enough to model complex type hierarchies, confusing enough to make a senior developer stare at ? extends T like it owes them money. #Java #Generics #TypeSystem #BackendDev

Java taught me that discipline in naming, structure, and design outlasts any framework hype cycle. The hype rotates. The fundamentals do not. #Java #SoftwareEngineering #CleanCode #CareerInTech

I used to fight Spring's auto-configuration. Then I accepted it. Now I occasionally talk to it. We've grown together. #SpringBoot #Spring #Java #BackendDev

The difference between a Java app that scales and one that doesn't is rarely the framework. It's almost always a decision made in a 20-minute meeting three years ago. #Java #Architecture #Performance #BackendDev

I've debugged a serialization issue that survived three Java versions, two team rotations, and one company acquisition. It was a missing serialVersionUID. Of course it was. #Java #Serialization #LegacyCode #BackendEngineering

CompletableFuture is Java's way of saying: "You wanted async. Here it is. Good luck reading it in six months." #Java #CompletableFuture #Async #BackendDev

When a junior asks "why not just use a NoSQL database for everything?", I take a deep breath, remember I asked the same thing in 2011, and answer kindly. #Java #NoSQL #SQL #SeniorDev