For those who have been doing Java development, we assume you already realized that Performance is the key for any Java application. Enhancing the Performance is enhancing your services and the product as a last result.
In performance engineering, there are two dogmas:
At Adservio, we work on improving java applications (and others) performance on a daily basis. We believe that prevention is the mother of all cures (an Arab proverb) and code is worthy of being optimized by default (we are in favor of Uncle Bob dogma).
Java developers can improve their notoriety by getting the best from java APIs, the Jvm and the Garbage collector.
We don't minimize the enormous progress that has been made in the performance of the Java platform and successive JVMs over the past 25 years.
The JIT compiler (introduced in java 1.1.8) makes the code 8 times faster than the same code in java 1.0, simply because java was interpreted in version 1.0. Parallelizing the garbage collector was a huge performance improvement, but more recent changes have been more incremental.
However, performance issues still happen because the Java platform continues to evolve and each new edition of Java provides new language features and new APIs that improve the productivity of developers— and impact the performance of their applications.
Good developer, not only ship functional and clean code but also a performance bug-free code.
Performance is an essential non-functional quality for software. Being aware of performance best practices helps developers attain better code quality and progress to higher levels of optimization, code cleanliness.
As a developer, performance matters for you for the following reasons:
For a long time, these were considered separate areas of expertise:
That was certainly not a convenient discrepancy—anyone who code Java applications should be aware of how code behaves in the JVM and what kinds of tuning are likely to enhance its performance.
As projects shift to a DevOps delivery model, this distinction is commencing to become less firm. Knowledge of the performance sphere will help a developer to add a new string to his bow.
On the other hand, non performance has a lot of drawbacks and can lead to high pressure, failure and loss of path, track and self-esteem.
As a developer, non performance can have a set of prejudices:
No matter a team's level of java performance maturing, the focus should be on developing the fundamentals of continuous performance analysis and enhancement.
Once the basic engine of performance awareness is in place, additional checks and performance tuning complexity can be introduced to accelerate transformation.
Java performance knowledge falls into 3 categories:
The performance of the JVM is based largely on tuning flags, while the performance of the platform is determined more by using best practices within your application code.
To break things down a bit, Performance awareness doesn't get solved overnight. The continuum is the key to bring performance as habit and automatism to java developers.
That's why it's essential to share knowledge.
Small performance committee or seminar can be an occasion to share benchmarks, return on experience and drive toward the right outcome of capitalization.
To get real, tangible performance outcomes can be through small steps, it's imperative to get alignment from the management to ensure minimum time for java developers to analyze, benchmark their code, brainstorm together to decide on the best choice possible.
Performance isn't just a non functional requirement that should be validated at the end of the project, it should be built-in.
It’s never too soon to start optimizing the performance of your code and projects.
Technical debt can grow seven times faster with performance issues in code.
To jumpstart your transformation, Adservio can help you assess your organization's maturity across the four stages of our modern code performance maturity model.
We offer a range of offerings from best practices workshops to deep-dive assessments, audit capability definition, and co-creation of performance in your software initiatives.