The profile of Java Profiler

Debugging performance problems in production can be a pain and, in some cases, impossible without the right tools. Java profile creators have always existed, but the projectors that most developers think are just one type - in fact, there are three:

1. Standard JVM profiles that track all the details of the JVM (CPU, chaining, memory, garbage collection, etc.).

2. Light profilers that emphasize its application with a little abstraction.

3. Application performance management (APM) tools used to monitor live applications in production environments.

Standard JVM profiles

A standard Java profiler certainly provides most of the data, but not necessarily the most useful information. This depends on the type of debugging task. These profiler will track all method calls and memory usage, allowing a developer to immerse themselves in the call structure at any angle they choose.

The profile of Java Profiler

Lightweight transaction profiles in Java

The creators of light profiles adopt a different approach when tracking their application, injecting themselves directly into the code. Aspect Profilers uses aspect-oriented programming (AOP) to inject code at the beginning and end of the specified methods. The Java Agent profile creators use the Java Instrumentation API to inject code into their application.

Under Overload, Creating Java JVM Profile in Production (APM)

All profilers have been optimal for development so far, but monitoring how your system works in production is critical. Production is always a different landscape - the development and preparation configurations usually do not have the same data sets and load.

Java APM tools generally use the Java Agent profile creator method, but with different instrumentation rules to allow execution without affecting production performance. The trick with these proflets is to provide the correct information in a smart way so as not to occupy the CPU cycles.

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Why are some Java profiles so expensive?

XRebel is a legal tool, but it costs US $ 365 per year. The Stackify Prefix is ​​free and provides much of the same functionality.

The biggest problem with APM solutions is definitely its price. Traditionally, they are so expensive that only the largest companies can deal with them. It does not make much sense to spend $ 100 a month on a server in Azure or AWS and spend another $ 200 a month for a product like the new relic.

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The monitoring tools should not cost more than the servers! Both Prefix and Retrace have profile creation functionality and are incredibly accessible. The prefix is ​​free for life and the Retrace is free in the first two weeks.

Applications for managing Java profiles and other Java tools, books, websites and blogs, YouTube channels, podcasts, events and LinkedIn can be found in our complete Java Developer's Guide.

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