I've been working with Java professionally for several years now, but I want to go beyond just making my code work. I'm interested in understanding the deeper mechanics of the Java language, how the JVM operates, core design principles, and any intricate details I should be aware of, especially concerning scaling and OS interactions. I feel like I'm ready to tackle these deeper topics and would love some advice on where to start and what to focus on.
5 Answers
For scaling and resource constraints, I suggest starting with Java Flight Recorder (JFR). It's great for performance analysis. Also, don't overlook the new FFM API for OS interactions—it's pretty neat!
Thanks for the tip! I’ve never used FFM API before; definitely going to look into it!
I've found some great resources out there! I highly recommend checking out this book: https://a.co/d/aMEc6vX. It really opened my eyes to the ins and outs of Java.
If you're looking for a challenge, try the "1 billion rows challenge." It's a fantastic way to push your understanding of database interactions in Java.
One of the best ways to learn is by building something yourself. Consider creating a Dependency Injection container, a simple web server, or maybe even an agent that manipulates bytecode. You'll learn a lot through hands-on experience and research.
Digging into Java bytecode is a must! Use javap to examine the compiled output of your classes and see how changing your code affects the bytecode. Understanding classloaders and garbage collection will also be crucial as you go deeper. There's so much to uncover here!
Totally agree! JFR is a game changer for tracking down bottlenecks without slowing things down too much.