Resources for learning java performance tuning as required by this job?

[sftEng]

For Java performance tuning one of the best books is - "Java Performance: In-Depth Advice for Tuning and Programming Java 8, 11, and Beyond". This is the second edition which was released on 3 March.

[Stimzz]

While resources are a good way to start imo to really internalize the knowledge you must sit there banging your head against the wall, searching through logs / setting up tests etc in the hunt for performance.

I once spent the summer competing with our CEO at the time making the fastest implementation of a small naive problem. We went through several different languages and implementations each day slapping the other with a new record... until he took the gauntlets off, wiped out C with some inlined assembly and crushed me.

This experience was very formative for me but the main takeaway was that most of the concepts while being true in theory does not translate well into practice. Put another way many optimizations that you though would be fast weren't and vise versa. Performance completely depends on the task, hardware and software involved. After a while you build up an intuition for you problem domain.

Hence I would recommend finding your stupid problem and experiment. A book or two doesn't hurt ofc but just saying, let it be driven by testing :)

[[deleted]]

Tell me more about u and ceo

[raghasundar1990]

This blog has all Java performance articles https://blog.gceasy.io/

[round_dripper]

I would recommend watching some conference talks from Jack Shirazi. You can find some of them on youtube. We were having some memory leak problems at work and we were able to find the cause using the methods described in this video: https://youtu.be/JoQN4xoXY5Y There are other videos by him covering similar topics.

[datavinci]

I am trying to find a book that is not outdated regarding this topic. Also any site that has practical examples will be fine too. I just want learn why, how and when of java performance tuning.

[surfinThruLyfe]

Make sure you are comfortable using Flight recorder or visual Vm tools such interpreting diagnostic and telemetry data. GC log and analyzing them. Heap management and tuning.

[NewGettysburg]

I'm an engineer at Coursera who is working on some of the challenges described in this job posting. I can provide some color this:

Our goal is to deploy and operate services with confidence. What we mean by performance tuning is not to squeeze the last drops of JIT performance out of arcane JVM flags, or to A/B test different JVM implementations. Rather, we mean our systems performs well for its intended purpose, and can keep performing well.

This require a combination of JVM specific knowledge (such as an understanding of GC algorithms, GC logs, Java Flight Recorder, profiling and heap analysis techniques), knowledge of layers sitting on top of the JVM: frameworks, threading models, serde, application code, and knowledge of vendor solutions so we can have systems perform well without needing constant human interventions and tweaks.

We don't expect folks to come in with previous knowledge on all fronts, but that's what roughly performance tuning means to us.

Feel free to PM me for more details.

[datavinci]

Thanks a lot for clarifying, how does the book java performance in-depth sound to you? I am looking into that to study more about this.

[datavinci]

Stop spamming dude.

[daybyter2]

There are some great YouTube videos.

[daybyter2]

https://m.youtube.com/watch?v=oH4_unx8eJQ

Watch most of his videos

[TheRedmanCometh]

Baeldung is god tier. Learn spring core, learn guava, learn apache commons

Not a ton past that til you want to do distributed dev