DZone

JANUARY 14, 2021

java performance heap dump heap dump analysis java monitoringHeap Dumps are vital artifacts to diagnose memory-related problems such as slow memory leaks, Garbage Collection problems, and java.lang.OutOfMemoryError.They are also vital artifacts to optimize the memory consumption. There are great tools like Eclipse MAT and Heap Hero to analyze heap dumps. However, you need to provide these tools with heap dumps captured in the correct format.

Java 190

Java Monitoring Performance 190

DZone

JUNE 17, 2020

Does every performance engineer need to know about how memory in Java works? To completely fine-tune the java performance bottlenecks for high performance my answer is YES. Java memory management is a significant challenge for every performance engineer and Java developer, and a skill that needs to be acquired to have Java applications properly tuned.

Java 181

Java Performance Testing Performance Tuning 181

DZone

AUGUST 5, 2020

I feel that in the modern world of development, there are too many factors to pick a single tool for debugging any language, let alone Java. java performance ide debugging debug debuggers debugging tools debugging javascript ide for javascript development

Java 214

Java Systems Development Performance 214

DZone

JANUARY 24, 2020

Troubleshoot your Java application, the Sherlock Holmes way. Java application failure troubleshooting can be closely associated with the typical crime scene investigation. I read few Sherlock Holmes classic stories in recent times at home, while struggling to solve the Java application failure mysteries at the office. Java application failures can be painful at times when our application doesn't leave enough traces to help us to solve the mystery.

Java 176

Java Performance 176

DZone

MARCH 12, 2020

We started reading official documentation, tutorials, blog posts and articles about Go, especially ones where authors shared their experiences of migration from Java to Go or comparison Java with Go, as at that moment, we'd been using Java for 15+ years. java microservices golang load testWhen Go first appeared in November 2009, we didn't hear much about it, and our first interaction happened in 2012 when Go version 1 was officially released by Google.

Java 180

Java Testing Google Programming 180

DZone

APRIL 21, 2019

These pauses are sometimes called Stop-The-World pauses, and the minimization of them is the primary concern of GC tuning, as they can have a huge impact on the performance of a Java application. java tutorial performance garbage collection java performance tuning gc garbage collector heapGarbage collection is the mechanism by which the JVM reclaims memory on behalf of the application when it's no longer needed.

Tuning 218

Tuning Java Performance 218

DZone

NOVEMBER 2, 2020

Let's start with Zoom, an incredible video-conferencing application on which almost today's world relies on was developed using JAVA and C++. java python performance programming language python development python developer java developersComparing two programming languages is similar to a comparison between two cars, where two different individuals may have different opinions on both of them.

Java 178

Java Programming C++ Code 178

DZone

JANUARY 31, 2020

java server performance parallelism socket ioC10K problem is a term that stands for ten thousand concurrently handling connections. To achieve this, we often need to make changes in the settings of created network sockets and default settings of Linux kernel, monitor the usage of the TCP Send/Receive Buffers and Queues and, in particular, adjust our application to be a good candidate for solving this problem.

Java 213

Java Scalability Network Monitoring 213

Dynatrace

DECEMBER 9, 2020

Therefore, we’re happy to announce support for OpenTracing data that’s emitted by auto- and custom-instrumentation of Java source code with Dynatrace PurePath 4, our distributed tracing and code-level analysis technology. Find OpenTracing for Java seamlessly integrated into PurePath 4.

Java 167

Java Open Source Traffic Serverless 167

DZone

JUNE 18, 2019

In my previous article, I wrote about the Modularity System , which was introduced in Java 9. With this writing, I would like to continue the Java evolution line by taking a glance about the main Java 9 features according to the performance improvements. Java 9 Feature: Performance Improvements. In Java 9, the most significant performance upgrade was concerned with the Garbage Collection. java performance java 9 garbage collector new features

Java 100

Java Performance Systems 100

DZone

DECEMBER 4, 2019

Learn how to make your Java applications performance perfectly. 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. Ensure there is enough RAM to hold your java process. Swapping java process to disk is a performance killer. java performance performance tuning java performance tuning java application linux performance

Tuning 109

Tuning Java Performance Hardware 109

Dynatrace

APRIL 10, 2020

But let’s start from the beginning: Step #1 – Switching to Java 11. In order to leverage the new Memory Profiling feature I’s necessary that you upgrade to Java 11 as this version introduces new capabilities ( JEP 331 ) that allow tool vendors like Dynatrace to capture memory allocation information at run-time with zero overhead. Looked like a classical Thread Leaking issue: Dynatrace observed a thread leak after switching to Java 11 causing the JVM peak at 8k threads.

Java 160

Java Performance Engineering Infrastructure 160

DZone

NOVEMBER 20, 2019

You may also like: Java-Distributed Caching in Redis. Redis developers who want to do local caching in Java will find that Redis doesn’t support this functionality out of the box. In this article, we’ll discuss how you can take advantage of local caching in Java and Redis with a third-party Redis Java client such as Redisson. java tutorial performance redis cache spring cacheBoost Redis.

Cache 149

Cache Java Database Development 149

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 performance testing tdd unit testing junit online courses mockito unit tests java for beginners

Java 159

Java Testing DevOps Code 159

DZone

SEPTEMBER 9, 2019

How well does your Java perform? The traditional way of iterating in Java has been a for-loop starting at zero and then counting up to some pre-defined number: private static final int ITERATIONS = 10_000; @Benchmark public int forUp() { int sum = 0; for (int i = 0; i < ITERATIONS; i++) { sum += i; } return sum; }. performance jvm streaming java performance iteration data stream for loop graal vm cleverIteration Performance.

Java 118

Java Benchmarking Performance 118

DZone

JANUARY 22, 2020

Measure Java performance! From JDK-12 onwards, the JDK comes with JMH (Java Microbenchmark Harness), It is a toolkit that helps you implement Java microbenchmarks correctly. JMH is developed by the same people who implement the Java virtual machine (JVM) so they know the internals and how Java makes optimizations at run time. jvm jdk java 1.8

Java 116

Java Benchmarking Virtualization Performance 116

DZone

JULY 1, 2019

To install RavenDB using Docker follows the step below: java nosql performance memcached jakarta ee jakarta jnosqlMemcached is an easy-to-use, high-performance, in-memory data store. It offers a mature, scalable, open-source solution for delivering sub-millisecond response times, unlike databases that store data on disk or SSDs, Memcached keeps its data in memory. This tutorial will cover how to use Memcached in Jakarta EE with Eclipse JNoSQL. Installing Memcached Using Docker.

Java 168

Java Open Source Scalability Database 168

DZone

APRIL 18, 2019

The implementation is in core Java. Mowglee is a multi-threaded geo web crawler in Java. To do this, you should have intermediate to expert level core Java skills, an understand of the intricacies of multi-threading in Java, and an understand of the real-world usage of and need for web crawlers. This article provides the implementation of a web crawling system called Mowglee that uses geography as the main classifying criteria for crawling.

Java 158

Java Systems Performance 158

DZone

MARCH 16, 2020

java performance automation testing selenium automation selenium 3.0 Have you noticed the ubiquity of web forms while surfing the internet? Almost every website or web-application you visit leverages web-forms to gain relevant information about yourself. From creating an account over a web-application to filling a brief survey, web forms are everywhere! A form comprises web elements such as checkbox, radio button, password, drop down to collect user data.

Java 131

Java Website Internet Internet 131

DZone

OCTOBER 8, 2019

Something to test Java's performance. java performance apm tracing rum java profiler jvm performance web requestsManaging an application’s performance, and specifically keeping it in good condition, is one of the hardest challenges in software development. That’s true for virtually any programming language and platform.

Java 139

Java Virtualization Programming Software 139

DZone

DECEMBER 3, 2019

Automate Appium Java Tests In Parallel. The beauty of Appium for mobile testing is that its tests can be written in any programming language including Python, Ruby, Java, JavaScript, and C#. While we have covered extensive Appium tutorials, in this article, we'll walk through how to automate Appium tests in parallel against our real devices using TestNG Java sample tests. java tutorial performance testng appium java testing appium testing

Java 100

Java C++ Mobile Programming 100

DZone

MAY 17, 2019

Generally, a unit should be a small part of the application — in Java, it is often a single class. java performance testing unit testing best practices testing pyramid testing best practicesUnit testing is a well-known practice, but there's lots of room for improvement! In this post, the most effective unit testing best practices, including approaches for maximizing your automation tools along the way.

Best Practices 193

Best Practices Java Testing Strategy 193

DZone

JULY 16, 2019

Most Java developers have had to debug their applications, usually to find and fix an issue there. This is where JDWP (Java Debug Wire Protocol) comes into play. In order to debug remotely executed JVMs (where the debuggee is separately launched locally or on another machine), the Java platform defines a protocol for communication between the JVM and the debugger. java performance jvm debugging remote debugging jdwp

Java 100

Java Transportation Programming Development 100

DZone

AUGUST 16, 2019

ArrayList and LinkedList are frequently used classes in the Java collection framework. java performance array linkedlist arraylist interview answers performance analysisIf you know only understand basic performance comparisons of ArrayList and LinkedList , but not the minor details of these two classes, then this article is for you. " ArrayList should be used where more search operations are required, and.

Java 125

Java Performance 125

DZone

JUNE 4, 2019

java tips and tricks performance best practicesWhile solving issues related to NFRs (especially application performance), I always think about why we as developers give less importance (honorable exceptions are always there) to performance. Is this due to a lack of awareness? Many times, we start thinking of performance only at the time of a performance test or after deployment.

Java 100

Java Best Practices Performance Testing Performance 100

Dynatrace

JULY 21, 2020

Although these COBOL applications operate with consistent performance, companies and governments are forced to transform them to new platforms and rewrite them in modern programming languages (like Java) for several reasons. IBM Java version 7. Dynatrace news.

Java 147

Java Government Database Programming 147

DZone

APRIL 18, 2019

What Are Java Profilers? A Java Profiler is a tool that monitors Java bytecode constructs and operations at the JVM level. java open source performance monitoring jvm process java performance process monitoringTo help equip you for the ongoing process of optimization and the life of debugging ahead of you, we’ve gathered a list of the best tools to monitor the JVM in both development and production environments. And the best part?

Processing 136

Processing Java Monitoring Open Source 136

Alex Podelko

SEPTEMBER 4, 2018

For years, the debate has raged on regarding which programming language is better, Java or Scala. While some argue that just because Java is older it is better, others believe Scala is better for a variety of reasons. In essence, Java is classified as an object oriented programming language. It is designed to run in specific environments, like Java Virtual Machine for instance. If you feel more comfortable using simple code, then using Java is your best bet.

Java 100

Java Programming Performance Virtualization 100

DZone

MARCH 16, 2020

java big data performance apache ignite in-memory data grid in-memory caching distributed cacheOverview. This article compares different options for the in-memory maps and their performances in order for an application to move away from traditional RDBMS tables for frequently accessed data. In this case, for the sake of demonstration, I have taken 2 million dummy physician records that reside in the database table and migrated them to in-memory maps.

Cache 109

Cache Java Database Big Data 109

DZone

JUNE 5, 2019

java performance jvm blocking profiler tool blocking codeBlocking code is code which blocks executing threads until their operations finish. It's not always bad to block a thread and wait until the result is ready but there are situations where it's not optimal from a throughput and memory point of view. This article assumes some basic knowledge about the differences between blocking and non-blocking code.

Code 127

Code Java Efficiency Performance 127

DZone

APRIL 18, 2019

This chapter aims to remind the reader why Hibernate has its place in high-performance data access, and the table of content looks like this: java performance hibernate jpa java persistenceSecond Part, Chapter 8. Now that the first part of my book is published, it’s time to focus on the second part, which covers both JPA and Hibernate.

Java 100

Java Performance 100

Sutter's Mill

JANUARY 15, 2013

With the help of friends Robert Seacord and David Svoboda of CERT in particular, I posted a note and link to their CERT post today because people have been misunderstanding the recent Java vulnerabilities, thinking they’re somehow really C or C++ vulnerabilities because Java is implemented in C and C++. From the post: Are the Java vulnerabilities actually C and C++ vulnerabilities? You’ve probably seen the headlines: [US-CERT] Java in Web Browser: Disable Now!

Java 40

Java Virtualization Operating System Programming 40

TechBeacon Testing

MARCH 31, 2020

App Dev & Testing, Testing, Test Automation, Ruby, Java, PythonWhat's the top language for writing software test automation scripts? Your guess is as good as anyone else's, because there's no agreement on this. And that's unfortunate. You would think by now we testers would have settled the debate.

Java 72

Java Software Software Testing 72

Highly Scalable

FEBRUARY 2, 2012

Java was initially designed as a safe, managed environment. Nevertheless, Java HotSpot VM contains a “backdoor” that provides a number of low-level operations to manipulate memory and threads directly. It is hard to imagine a Java developer who uses this backdoor in any regular development because this API is extremely dangerous, non portable, and volatile. There are at least two standard ways to do it in Java: put payload to thread local or use static field.

Java 101

Java C++ Virtualization Code 101

The Morning Paper

SEPTEMBER 24, 2020

Static analysis of Java enterprise applications: frameworks and caches, the elephants in the room , Antoniadis et al., If you try running Soot , WALA , or Doop out of the box on a real-world Java enterprise application you’re likely to get very low coverage, or possibly even no results at all if the tool fails to complete the analysis. Popular static analysis frameworks for Java provide no support for the lifecycle or injected semantics of enterprise applications.

Cache 66

Cache Java Benchmarking Programming 66

Brendan Gregg

JUNE 30, 2017

But with Java, there's another way to visualize the same CPU workload which provides some additional insight: **a Java package flame graph**. Instead of visualizing the stack trace hierarchy, this visualizes the Java package name hierarchy. Here is a normal stack trace-based [CPU flame graph] for Java, running a microbenchmark ( SVG ): The y-axis is stack depth. How much CPU time was in java/util methods directly, excluding child functions calls?

Java 40

Java Code Software Software 40

DZone

APRIL 29, 2020

java tutorial performance troubleshooting cpu java development tool java threads java memory leak java design pattern thread classIn this article, we are going to discuss how we troubleshoot a CPU spike problem that surfaced in a major trading application in North America. All of a sudden, this application’s CPU started to spike up to 100%.

Traffic 140

Traffic Java Code Design 140

DZone

DECEMBER 1, 2020

With that, the question arises: How will Java deal with solutions like NodeJS? In this talk, we'll explore this framework and make Java alive in the cloud era. java cloud performance cloud native jakarta ee microprofile platform.sh

Servers 154

Servers Design Development Java 154

DZone

JANUARY 7, 2021

Programming problems can be listed and are sorted based on various categories of programming languages used like PHP, Java, Python, C++, and many others, which developers use for coding. tutorial programming java & net which is the best programming conceptsProgramming is all about solving issues and problems. 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.

Programming 168

Programming Efficiency C++ Code 168

InfoQ Articles

JANUARY 12, 2021

JVM HTTP Clojure Networking Performance & Scalability Java Functional Programming Development Architecture & Design article

Benchmarking 98

Benchmarking Performance Network Design 98

DZone

JANUARY 12, 2021

java open source devops command line operating systems linux operating system linux tools/utilities system admin unix operating system unix osThere are different options to terminate a process in Unix/Linux flavor of operating systems. This article intends to list and provide examples of each option. You can use the kill command to terminate a process by passing the process id. PID is the process ID of the process that you want to terminate.

Processing 126

Processing Operating System Systems Open Source 126

DZone

JANUARY 24, 2020

java java 8 spring framework glassfish technology and tools troubleshoot azure cloud saas application development thread dump thread memoryLearn how to troubleshoot your application. Recently we were troubleshooting a popular SaaS application. This application was slowing down intermittently. To recover from the problem, the application had to be restarted. This application was slowing down sometimes during high traffic volume periods; sometimes during low traffic periods as well.

Traffic 158

Traffic Java Azure Technology 158

DZone

SEPTEMBER 25, 2019

You may also like: Java Out of Memory Heap Analysis. The application was running on a GNU/Linux OS, Java 8, Tomcat 8 application server. performance api memory cpu java (programming lang. java (software What happens when you're out of memory? Recently we experienced an interesting production problem. This application was running on multiple AWS EC2 instances behind Elastic Load Balancer.

Tuning 149

Tuning Servers Traffic AWS 149