Digging Into Sockets With Java Flight Recorder

Let's look at one amazing tool for gathering information about what's going on in your JVM. The tool is called the  Java Flight Recorder, and in today's article, I'm going to use it to dig into how Sockets behave in your Java application.

A lot of people use HTTP APIs to communicate between their services (let's have another article about whether it's a good solution or not), and in a majority of cases, it works fine. However, we can get into situations where performance really matters, and especially for libraries writers, JFR can be a very useful tool to see I/O works in their code.

You may also like: Using Java Flight Recorder With OpenJDK 11

This article is not an introduction to Flight Recorder, it's rather more practical. If you want to learn more about this technology, you can start with JEP 328: Flight Recorder.