Java Performance Tuning

Practices and guidelines for high performance Java applications. Learn to identify bottlenecks, optimize JVM settings, and write code that performs well under load.

Java Performance Tuning

Practices and guidelines for high performance Java applications. Learn to identify bottlenecks, optimize JVM settings, and write code that performs well under load.

Overview

Performance issues can cripple enterprise applications, leading to poor user experience, increased infrastructure costs, and lost business opportunities. Understanding how to measure, analyze, and optimize Java application performance is a critical skill.

This course provides comprehensive coverage of Java performance tuning, from JVM internals to application-level optimizations. You will learn to use profiling tools, understand garbage collection strategies, optimize memory usage, and write efficient concurrent code. Through hands-on labs, you will gain practical experience diagnosing and resolving performance issues.

Objectives

The main objectives of the Java Performance Tuning course are:

Understanding JVM architecture: memory model, class loading, and JIT compilation
Mastering garbage collection: algorithms, tuning parameters, and GC log analysis
Using profiling tools: JProfiler, VisualVM, Java Flight Recorder, and async-profiler
Memory optimization: heap sizing, object allocation patterns, and memory leaks
Concurrent programming optimization: thread pools, synchronization, and lock-free algorithms
Database and I/O performance: connection pooling, caching strategies, and batch processing
Benchmarking with JMH (Java Microbenchmark Harness)

Course Schedule

Day 1

JVM internals, memory model, and profiling tools introduction

JVM architecture and memory model
Class loading and JIT compilation
Profiling tools: JProfiler, VisualVM, Java Flight Recorder

Day 2

Garbage collection deep-dive, tuning, and memory optimization

Garbage collection algorithms
GC tuning and log analysis
Heap sizing and memory leak detection

Day 3

Concurrency optimization and database/I/O performance

Thread pools and synchronization
Lock-free algorithms
Connection pooling, caching, and batch processing

Day 4

Benchmarking, performance testing, and hands-on optimization workshop

Benchmarking with JMH
Performance testing
Hands-on optimization workshop

Target Audience

This course is designed for professionals dealing with Java application performance:

Senior Java Developers - responsible for application performance
Performance Engineers - specializing in optimization and tuning
DevOps Engineers - managing JVM deployments and configurations
Architects - making decisions that impact system performance
Teams - experiencing performance issues in production

Optimize Your Applications

Prerequisites

Here are the prerequisites for the Java Performance Tuning course:

Strong Java experience: 2+ years of Java development experience
Understanding of multithreading: familiarity with threads and synchronization
Database knowledge: experience with SQL and database operations
Production experience: ideally, experience with production Java applications

Testimonials

We really enjoyed Bogdan's training sessions. It's always cool to learn and have fun while doing them. He is very patient and always prepared to offer the best solution/explanation for any problem/question. ... I also love his ability to extend the context for each chapter, offering many smart hooks to integrate the concept in a broader picture, which makes it all easier to understand.

Sorin, Crossover

Bogdan is our coach who helped shape our vision to use Java and Spring/SpringBoot in today's marketplace. He is highly skilled, extremely passionate and has a strong work ethic. With his unique and practical approach, he taught us from technology fundamentals on up to software design and best practices. He is continuously helping us progress on a growing path in software development. I enjoy working with Bogdan very much and I consider him a friend.

Andrei, Óce

When we approached Bogdan for a Java training, our goal was to up-skill our team of PL/SQL developers in order to become proficient in Java. Bogdan has vast experience in the topics and very good communication and presentation skills. The pace was very good and he was very thorough in responding all questions, providing lots of related documentation for further study.

Radu, Nokia

Working with Bogdan is really inspiring and I always learn something new from his training and coaching sessions. All the training sessions are well-structured, use examples and employ hands-on components. What I enjoyed most during his training sessions is that they made me eager to learn more and to extend my knowledge. And it's not hard to do, thanks to the documentation that Bogdan provides for further reading.

Corina, Cerner

For a year and a half I've participated in various courses held by Bogdan, from Java 8, Spring, Maven to Docker. He has a good methodology, a strong background, he keeps you interested and he is open for discussions even after the training sessions, which is very important. Usually we have more questions after we start using the knowledge from the courses.

Ion, Sociéte Générale

I have participated in several training sessions held by Bogdan, including Java 8, Maven, CI & CD, Git and Spring. Every time we were thrilled to discover the information and best practices described, especially as he exemplified them with many hands-on examples. Furthermore, there were a few things present in each session that defined Bogdan's approach, namely, professionalism, vast knowledge and experience, innovative solutions, a great personality and a sense of humor.

Lavinia, Elysian

I am the self-learning type; I usually get bored at every course/training, very quickly. With this course, it was not the case. I payed attention ~95% of the time, which is very rare for me.

Ionuț, Nokia

I was pleasantly surprised by this course, being probably much more than other courses that can be found online. The presentation is very good, the materials are well structured and prepared, with many examples. Moreover, I consider the context information to be welcome, some of it was not very "settled" for me, such as the information about the application architecture, etc. Another plus regarding the training and the trainer is the fact that I managed to pay attention approximately 99% of the time, which I find amazing.

Dorina, ANAF

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