DZone

MAY 12, 2019

You may already know that JUnit and Mockito are two of the most popular testing libraries for Java applications, and you will find them in almost every Java application classpath. I often meet and work with Java developers who know Java well but haven't written a single unit test.

Java 189

Java Testing DevOps Code 189

DZone

JANUARY 6, 2024

In the realm of Java development, optimizing the performance of applications remains an ongoing pursuit. Profile-Guided Optimization (PGO) stands as a potent technique capable of substantially enhancing the efficiency of your Java programs.

Java 189

Java Performance Tuning Programming 189

Dynatrace

MARCH 9, 2022

This first step clearly shows that the code that powers getFamilyCondition is using a lot of CPU – much more than any other of the top services combined! It can be your own code, 3 rd party code or your runtime that executes for certain tasks such as Garbage Collection. So – we found the culprit!

Java 233

Java Traffic Government Code 233

Dynatrace

FEBRUARY 13, 2023

All-new Dynatrace code-level vulnerability detection All-new Dynatrace code-level vulnerability detection evaluates all requests passing through your applications to identify vulnerabilities. The deep insights into application code provided by OneAgent® help track potentially vulnerable data flow within an application.

Code 213

Code Java Testing Tools Testing 213

Dynatrace

MARCH 31, 2022

CVE recently published three new critical vulnerabilities in the Java Spring Framework, including one called Spring4Shell. Many applications are potentially affected, as Spring dominates the Java ecosystem , with 60% of developers using it in their main Java applications. This article was co-authored with Robin Wyss.

Java 202

Java Cloud Availability Code 202

DZone

MARCH 5, 2020

As a Java Developer, we need to cover a lot of scenarios to ensure the quality of our software and catch bugs as soon as possible when introducing a new code. The answer which the community provided works well, but it is a lot of boilerplate code to just assert your log events. So the LogCaptor library came into life.

Testing 360

Testing Java Code Software 360

DZone

APRIL 6, 2023

It's a great deal when developers have total control over cloud configuration along with business logic source code. Even today, many organizations prefer to go with Spring libraries because it provides many features.

Java 245

Java Cloud Servers Code 245

Dynatrace

OCTOBER 21, 2020

And the code-level root cause information is what makes troubleshooting easy for developers. As Dynatrace automatically captures stack traces for all threads at all time the CPU Hotspot analysis makes it easy to identify which code is consuming all that CPU in that particular thread. Step 3: Identifying root-cause in code.

Code 245

Code Cloud Engineering Java 245

Dynatrace

JUNE 10, 2022

The IT world is rife with jargon — and “as code” is no exception. “As code” means simplifying complex and time-consuming tasks by automating some, or all, of their processes. Today, the composable nature of code enables skilled IT teams to create and customize automated solutions capable of improving efficiency.

Best Practices 222

Best Practices Infrastructure Code Speed 222

DZone

DECEMBER 4, 2019

Learn how to make your Java applications performance perfectly. While Performance Tuning an application both Code and Hardware running the code should be accounted for. In this blog post, we shall go over various aspects that have to be taken care of to extract maximum performance out of a Java Application running on Linux.

Java 147

Java Tuning Performance Hardware 147

DZone

DECEMBER 9, 2020

While we are hearing tips on Clean code, the most common tip is maintaining SRP while writing class or methods, in a broader scope Module/Package/Service/API. Most of the time it succumbs us and we are ending up with anti-KISS code but If we use it in the right proportion, then we can create a cohesive and robust architecture.

Code 225

Code Architecture Design Java 225

DZone

JUNE 5, 2019

Blocking code is code which blocks executing threads until their operations finish. This article assumes some basic knowledge about the differences between blocking and non-blocking code.

Code 140

Code Java Efficiency Performance 140

DZone

APRIL 18, 2019

No trials, no license purchases – just the tools you need to delve behind the scenes of your code execution. What Are Java Profilers? A Java Profiler is a tool that monitors Java bytecode constructs and operations at the JVM level. They all come for a very affordable price: free.

Java 154

Java Processing Monitoring Code 154

DZone

DECEMBER 21, 2020

Naturally, such applications must be highly reliable so that no error in the code can interfere with data processing. To achieve high reliability, one needs to keep a wary eye on the code quality of projects developed for this area. This engine is written in Java and Scala.

Code 159

Code Java Big Data Open Source 159

DZone

NOVEMBER 5, 2024

CPU spikes are one of the most common performance challenges faced by Java applications. APM tools usually can’t pinpoint the exact code paths causing the issue. This is where non-intrusive , thread-level analysis proves to be much more effective. Intrusive vs Non-Intrusive Approach: What Is the Difference?

Java 147

Java Code Monitoring Performance 147

DZone

DECEMBER 24, 2021

Java has the Jqwik library, Scala has ScalaCheck and Python has Hypothesis. Here I want to skip the nitty-gritty and focus in detail on its killer feature, which is the ability to warn when some change to production code is no longer sufficiently covered by a test suite. Check the links at the end for some good tutorials.

Testing 346

Testing Java Technology Technology 346

DZone

AUGUST 28, 2019

These days, our code frequently has to reach out to a remote server as part of its job, usually consuming an API or some other service. Frequently, our code communicates with these remote services in a RESTful manner. Introduction.

Code 223

Code Testing Servers Java 223

DZone

SEPTEMBER 11, 2024

This article will focus on the specific recommendations for implementing various distributed system patterns regarding Spring Boot, backed by sample code and professional advice. Spring Boot Overview One of the most popular Java EE frameworks for creating apps is Spring.

Systems 249

Systems Java Software Architecture Programming 249

DZone

JUNE 3, 2024

While I was coding for a performance back-end competition , I tried a couple of tricks, and I was wondering if there was a faster validator for Java applications, so I started a sample application. I used a very simple scenario: just validate the user's email.

Java 278

Java Code Performance 278

DZone

FEBRUARY 6, 2024

If you have friends who are learning to code, I'd appreciate a reference to my Java Basics book. If you want to get back to Java after a while, check out my Java 8 to 21 book. As a side note, if you like the content of this and the other posts in this series, check out my Debugging book that covers this subject.

Java 252

Java Servers Systems Code 252

Dynatrace

APRIL 8, 2020

Java Memory Management, with its built-in garbage collection, is one of the language’s finest achievements. However, garbage collection is one of the main sources of performance and scalability issues in any modern Java application. Optimize your code by finding and fixing the root cause of garbage collection problems.

Speed 166

Speed Code Java Lambda 166

DZone

JULY 19, 2024

This guide provides a comprehensive walkthrough on creating a local development environment using IntelliJ IDEA, DevContainers, and Amazon Linux 2023 for Java development. DevContainers are a feature provided by Visual Studio Code and other IDEs like IntelliJ IDEA through extensions. Why Use DevContainers? What Are DevContainers?

Development 287

Development Java Code Software 287

DZone

OCTOBER 24, 2021

I remember when.Net originally came out some 20 years ago and Microsoft had created a website called "pet shop" or something, where they were able to "prove" that.Net and SQL Server was faster than the Java and Oracle equivalent. Watch me run you through the code below.

Benchmarking 264

Benchmarking Best Practices Java Website 264

The Netflix TechBlog

FEBRUARY 3, 2021

By open-sourcing the project, we hope to contribute to the Java and GraphQL communities and learn from and collaborate with everyone who will be using the framework to make it even better in the future. The transition to the new federated architecture meant that many of our backend teams needed to adopt GraphQL in our Java ecosystem.

Open Source 246

Open Source Java Architecture Metrics 246

DZone

JULY 13, 2022

AWS Lambda is a compute service that lets you run code without any infrastructure management and it natively supports Java, Go, NodeJS,Net, Python, and Ruby runtimes.

Lambda 264

Lambda AWS Java Infrastructure 264

DZone

JULY 16, 2021

Capturing the console output and using that to assert isn't that hard in plain java. So I decided to generate a library out of it and contribute back to the community to give them also the possibility of capturing the console output without introducing verbose code. It is actually very easy but verbose.

Testing 279

Testing Java Code Development 279

DZone

JANUARY 7, 2021

There is an end number of programming issues that the developers face when they are writing code for developing a website, applications, or any other type of software. Learning to code simply means improving your knowledge and finding various ways to solve all the problems more efficiently than ever before. Recursive Search Techniques.

Programming 259

Programming Efficiency Java C++ 259

DZone

MARCH 7, 2023

PySpark is the Python API for Apache Spark , which allows Python developers to write Spark applications using Python instead of Scala or Java. Apache Spark is a powerful open-source distributed computing framework that provides a variety of APIs to support big data processing.

Big Data 173

Big Data Code Tuning Open Source 173

DZone

JANUARY 20, 2020

Read on to find out some Java technical interview questions! Almost any Java technical interview contains several questions covering Java concurrency topics. A common scenario for a beginner-intermediate level sound like this: Interviewer: Can you enumerate the Java thread life cycle states?

Java 147

Java Code Performance 147

DZone

APRIL 13, 2023

Technical debt takes on various forms from source code smells to security risks to the more serious issue of architectural technical debt. Great tools exist to scan for source code quality and security, but tracking, baselining, and detecting architectural drift has been hard due to the lack of observability, tooling, and best practices.

Architecture 279

Architecture Airlines Best Practices Java 279

Dynatrace

DECEMBER 12, 2021

It results in remote code execution (RCE) by submitting a specially composed request. Sensitive Data Access – Do the vulnerable Java processes access critical databases or file systems in the environment? For Java processes that are not directly accessible to the outside world, or internal-only processes, the risk is lower.

Java 244

Java Internet Internet Database 244

Dynatrace

APRIL 14, 2022

Because 60% of developers use Spring for their Java applications , many applications are potentially affected. With a critical CVSS rating of 9.8 , Spring4Shell leaves affected systems vulnerable to remote code execution (RCE). Further, the report lists Tomcat as the most popular Java application server.

Java 228

Java Servers Code Open Source 228

The Netflix TechBlog

NOVEMBER 9, 2022

We decided to move one of our Java microservices?—?let’s We turned to JVM-specific profiling, starting with the basic hotspot stats, and then switching to more detailed JFR (Java Flight Recorder) captures to compare the distribution of the events. The problem It started off as a routine migration. let’s call it GS2?—?to

Hardware 363

Hardware Cache Performance Latency 363

Uber Engineering

JUNE 15, 2021

It warns software engineers of bugs in newly-implemented code and regressions in existing code, before it is merged. It also … The post Handling Flaky Unit Tests in Java appeared first on Uber Engineering Blog. Unit testing forms the bedrock of any Continuous Integration (CI) system.

Java 105

Java Testing Software Engineering Engineering 105

Dynatrace

MAY 19, 2022

They enable product delivery and SRE teams to turn functionality on and off at runtime without deploying new code. This decoupling of code deployment from feature release is a crucial enabler for modern Continuous Delivery practices. Proprietary SDKs create adoption challenges. SDKs are lightweight, developer friendly, and flexible.

Java 269

Java Cloud Code Technology 269

Dynatrace

SEPTEMBER 7, 2019

Fully automatic deep code monitoring module injection. One of the unique strengths of Dynatrace OneAgent is the fully automated injection of the deep code monitoring module on Windows and Linux. Fully automated deep code monitoring module injection is available for all customers as of OneAgent version 1.175.

Code 130

Code Monitoring Java Operating System 130

DZone

DECEMBER 18, 2020

So CYC has no intention to be a readability code metric. Cognitive Complexity (CC) attempts to count the cognitive effort required to understand the code's flow. In the first part, I've introduced Cyclomatic Complexity ( CYC ) metrics in the previous part. CYC was invented a long time ago (in 1976) by Thomas J.

Code 147

Code Metrics Java Performance 147