Five most useful profiling techniques to use with modern Java apps

by | Feb 20, 2022 | Voxxed Days Bucharest 2022

Laurențiu Spilcă is a dedicated development lead and trainer at Endava, where he leads the development of various projects used in various places in the world, from Europe to EU, and Asia.

As a Java instructor, he delivered thousands of hours of training to 3000+ students in the past 10 years, recently being involved in courses at the Mathematics and Informatics Faculty of Bucharest University. During the previous couple of years, he delivered presentations, tutorials, and workshops at different important events around the world: in Bucharest, New York, San Francisco, Warsaw, Belgrad, Berlin, and many more.


Contrary to popular opinion, profiling techniques aren’t only for identifying thread-related issues.

In this presentation, you’ll learn five most useful profiling techniques that you’ll find tremendously helpful with modern Java apps:

  1. Investigating SQL queries to identify faultily communication between the app and the DBMS
  2. Finding hot spots in execution to optimize an app’s execution
  3. Finding a call graph for learning new code
  4. Profile reactive applications
  5. Analyzing an app’s memory usage

Such techniques with a profiling tool are a must for any Java developer regardless of the Java version or framework they use.

Adding these techniques that we’ll demonstrate with examples to the definition of done in your development process, you’ll minimize the time spent on finding problems and deliver better and more optimal apps.