How to Tune Garbage Collection in Java


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

Java Performance: For-Looping vs. Streaming


How well does your Java perform? performance jvm streaming java performance iteration data stream for loop graal vm cleverIteration Performance. There are many views on how to iterate with high performance.

Java 153

How Java Profilers Work


One of the best tools we have today for understanding application behavior and troubleshooting performance issues are Java profilers. Java profilers monitor JVM execution at the bytecode level and can provide information on thread execution and locks, heap memory usage, garbage collection, hot methods, exceptions, class loading, and more. How Java Profilers Work. java performance java performance app performance profilers java profilers

Java 100

Rocket Performance on Your Java Application with Memcached


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.

Java 219

Java 9 Performance Improvements — Getting Started With Java Spring


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

Multi-Threaded Geo Web Crawler In Java


The implementation is in core Java. Mowglee is a multi-threaded geo web crawler in Java. This article provides the implementation of a web crawling system called Mowglee that uses geography as the main classifying criteria for crawling.

Java 205

Java Performance Tools: Nine Types of Tools You Need to Know!


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.

Java 141

Top 5 JUnit and Unit Testing Courses for Java Programmers


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 Unit Testing Best Practices: How to Get the Most Out of Your Test Automation


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!

Addressing Application Performances in Java Applications


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

Performance Analysis of ArrayList and LinkedList in Java


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 109

Java Or Scala Performance – Which One Is Better?

Alex Podelko

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. The Java program language was first introduced in 1995.

Java 130

Increase Throughput by Eliminating Blocking Code in Your Java REST App


java performance jvm blocking profiler tool blocking codeBlocking code is code which blocks executing threads until their operations finish.

Code 164

Top 9 Free Java Process Monitoring Tools and How to Choose One


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?

'High-Performance Java Persistence' Chapter 8: Why JPA and Hibernate Matter


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 vulnerabilities

Sutter's Mill

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! We’ve been telling people to disable Java for years. … This should be enough motivation for you to turn Java off.

Java 52

Tricks with Direct Memory Access in Java

Highly Scalable

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. HotSpot JVM direct memory management heap hot spot hotspot java jdk7 jv

Java 131

Java Package Flame Graph

Brendan Gregg

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

TCP: Out of Memory — Consider Tuning TCP_Mem


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?

Tuning 193

Servlet 3.0 Async Support in Spring and Performance Misconceptions


Spring makes it easy to write Java applications. Spring Boot allows us to quickly create Spring applications: build and run a Java application server with embedded Tomcat and your own controller in less than 5 minutes.

2019 Top Slack Channels for Software Testers


java performance software testing selenium slack appium java script robot framework collabaoration

RSocket vs. gRPC Benchmark


java performance scalability latency cpu grpc rpc qpsAlmost every time I present RSocket to an audience, there will be someone asking the question: "How does RSocket compare to gRPC?" " Today we are going to find out.

Memory Wasted by Spring Boot Application


java performance spring boot memory environment springbootapplication analyzing memory memory wasted stress testSpring chickens and spring boots! One of the widely wasted resources in the world today is Memory.

20 Highly Qualified Test Automation Superstars


Our world-class expert instructors provide free test automation training in multiple programming languages such as Java, JavaScript, C#, Python, Ruby, and Swift. java javascript python performance c# test automation developers automated testing qa

Testing Code With REST Calls Made Easy


java server performance spring rest http junit mocking frameworksIntroduction. 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.

Code 182

Extending Dynatrace


The Dynatrace OneAgent will automatically instrument most frameworks in Java,NET, Node.js, PHP, and Golang. Any programming language able to make HTTP requests – such as Python, Java or bash – would be good for this purpose. Dynatrace news.

PostgreSQL Trends: Most Popular Cloud Providers, Languages, VACUUM, Query Management Strategies & Deployment Types in Enterprise


The supported programming languages for PostgreSQL include.Net, C, C++, Delphi, Java, JavaScript (Node.js), Perl, PHP, Python and Tcl, but PostgreSQL can support many server-side procedural languages through its available extensions. We found that Java is the most popular programming language for PostgreSQL, being leveraged by 31.1% Java #Python #C Click To Tweet. PostgreSQL popularity is skyrocketing in the enterprise space.

Cloud 139

Better Logging With TinyLog 2


Most, if not all, Java and Android developers have come across logging requirements in their application. java performance kotlin logging logging frameworks tinylog

High-Performance Persistence With MicroStream (Part Two)


java performance persistence kotlin mvn microstreamKeep pushing for the best performance possible! For some time, there has been a new competitor in the field of persistence and serialization. We are talking about Project MicroStream. What is it exactly?

Why Do We Need the Volatile Keyword?


java performance java concurrency happens before jcstress volatile fieldWhat fascinates me most about the volatile keyword is that it is still necessary, for me, because my software still runs on a silicon chip. Even if my application runs in the cloud on the JVM, despite all of those software layers abstracting away the underlying hardware, the volatile keyword is still needed due to the cache of the processor that my software runs on.

Cache 130

Custom Framework Listeners


java performance maven logging gradle java performance cucumber testng custom framework listenersIn my past articles, I’ve written about using custom listeners as part of getting the desired reporting or making your tests do what you want.

High-Performance Persistence With MicroStream (Part One)


java persistence kotlin high performance serialization and deserialization microstreamHigh-performance? Sign me up! For some time, there has been a new competitor in the field of persistence and serialization. We are talking about Project MicroStream. What is it exactly?

How to Make Simple End-To-End Tests With JavaTea


The following three topics are focused in this article: java performance junit testng selenium automation testing test automation framework parallel execution pairwise error

Write Maintainable Integration Tests with Docker


tutorial performance integration docker java (programming lang The popularity of microservices and the use of third-party services for non-business critical features have drastically increased the number of integrations that make up the modern application.

Improving Neo4J OGM Performance


java tutorial neo4j open data perceived performance neo4j in action ogm neo4j performanceWe'll help you improve performance! You may also like: 7 Simple Ways to Improve Website and Database Performance. Overview.

Boosting Spring Data Performance With Couchbase


It became very popular among Java/JVM developers because of the small learning curve and low codebase. java database tutorial nosql performance spring couchbase spring data indexes

Don’t read your data from a straw

Daniel Lemire

Or you can just cheat and do a “cast” What do you do in Java? However, Java offers a performance-oriented concept called a ByteBuffer to represent and array of bytes. Speaking for myself, I was going under the impression that Java would do a fine job reading from a byte array using an input stream. java performanceIt is common for binary data to be serialized to bytes.

C++ 116

Scaling Benchmarks With More Robust UseNUMA Flag in OpenJDK


What happens when you run a Java application without checking your hardware configuration? java jdk openjdk benchmark nodes performanace jdk11 flag numa lagObviously, your application lags in terms of performance.

Does the 32-Bit JVM or 64-Bit JVM Decision Matter Anymore?


java jvm jvm performance tuning q&a 32 bit 64 bitThere are a few distinct differences and subtle nuances between 32-bit JVM and 64-bit JVM. We thought we will try to clarify them through this question-and-answer article.

Tuning 141

Intro to Redis Cluster Sharding – Advantages, Limitations, Deploying & Client Connections

High Scalability

Redis Cluster is the native sharding implementation available within Redis that allows you to automatically distribute your data across multiple nodes without having to rely on external tools and utilities. At ScaleGrid, we recently added support for Redis Clusters on our platform through our fully managed Redis hosting plans.

How to Make A Simple End-To-End Testing Framework With JavaTea


The following three topics are focused in this article: java performance junit testng selenium automation testing test automation framework parallel execution pairwise error

Data Boundaries Are the Root Cause of Maintenance Problems


java performance clean architecture hexagonal architecture object orientation layered architecture dci architecture

Design 130

Boost of Parallelism Using Producer/Consumer Pattern


java performance jvm faq parallelism consumer producer patternIn general, there are two ways to achieve parallelism in your application. As always, both solutions have pros and cons and their core use cases are absolutely different.

Java 130