2021-06-23 04:00
As I mentioned in Hashtag Jakarta EE #76, the Jakarta EE Platform project is in the process of determining the Java SE requirements for Jakarta EE 10. In this post, I try to shed some light… Read More
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2021-06-22 04:00
Hello in this tutorial, we will understand Cookies and implement them in an Express.js application. 1. Introduction Cookies are a piece of any information sent from the server and are stored… Read More
2021-06-21 06:00
Study Up On Today’s Top Cloud Deployment Technologies & Prepare to Earn Important Certifications Hey fellow geeks, This week, on our JCG Deals store, we have another extreme offer… Read More
2021-06-21 04:00
Hello in this tutorial, we will build a REST API in a Node.js environment running on an Express.js server. 1. Introduction RESTful API stands for the standard web service interface used by t… Read More
2021-06-20 12:15
Did you notice? Last week, we migrated the entire www.optaplanner.org website (1399 files) to build with Java and Maven, instead of Ruby and Rake. On the face of it, nothing changed. But in… Read More
2021-06-19 12:15
A quick guide to understand primitive int representation of Stream as interface IntStream to support integer operations and with the useful examples. 1. Overview In this tutorial, We’l… Read More
2021-06-18 04:00
A quick guide on how to convert the file contents to String using Java Files api and with example programs. 1. Overview In this tutorial, you’ll learn how to convert File contents to S… Read More
2021-06-17 04:00
BigQuery provides us with the Storage API for fast access using an rpc-based protocal. With this option you can receive the data in a binary serialized format. The alternative ways to retrie… Read More
2021-06-16 04:00
I’ve been updating some training materials recently, and thinking about better ways of teaching and talking about JPA. One of the things I’ve been thinking about is how we have t… Read More
2021-06-15 04:00
Hello! In this tutorial, we will learn how to Sequelize ORM in Node.js Application. More specifically, we will build a RESTful application in a Node.js environment running on an Express.js s… Read More
2021-06-14 06:00
42 Hours of Prep Content to Fast Track Your Microsoft Azure Professional Career from Top-Rated Instructors Scott Duffy & Anand Nednu Hey fellow geeks, This week, on our JCG Deals store… Read More
2021-06-14 04:00
Hello! In this tutorial, we will explain the Express.js sessions. We will understand how to manage sessions in a Node.js application. HTTP is a stateless protocol and to manage sessions in a… Read More
2021-06-13 12:15
A quick guide to explore the Spark RDD reduce() method in java programming to find sum, min and max values from the data set. 1. Overview In this tutorial, we will learn how to use the Spark… Read More
2021-06-12 12:15
This article will focus on one of the advanced service mesh topology called cross-cluster mesh model. Often the terms used are multi-cluster and cross-cluster where multi-cluster denotes a s… Read More
2021-06-11 04:00
Microservices architecture helps in building an application as a suite of multiple fine-grained smaller services. Each of these services run in its own process and are independently deployab… Read More
2021-06-10 04:00
In today’s highly competitive world, software development and automation play a significant role in creating robust software applications for businesses. Additionally, emerging technol… Read More
2021-06-09 04:00
In our previous article from this series shared a look at the logical common architectural elements found in a retail data framework solution for retail organisations. The pro… Read More
2021-06-08 07:00
a.k.a. “How do I subclass a list element declared in my interface?” As covered by the rather awesome Ram on Baeldung, the Liskov substitution principle is important and is enforc… Read More
2021-06-08 04:00
Selenium has gone through a tremendous evolution since its introduction and that’s the reason today it is the most popular and powerful automation testing tools. The newly released Sel… Read More
2021-06-07 06:00
Hey fellow geeks, This week, on our JCG Deals store, we have another extreme offer. We are offering a massive 99% off on Pay What You Want: The 2021 Superstar Web Development & Design Bu… Read More
2021-06-07 04:00
I explained in Leadership Tip #8 that measuring happiness was a lost cause because happiness is a function of more than just work. I suggested we measure satisfaction. And I didn’t tel… Read More
2021-06-06 12:15
In our previous article from this series we introduced a use case around the data framework for retail stores. The process was laid out how we’ve approached the us… Read More
2021-06-05 12:15
In a previous blog post I went over the basics of Json Patch and Json Merge Patch and how a code that performs these operations looks like. In this post I will go over the details of how to… Read More
2021-06-04 04:00
For API users it is quite important an API provides useful error messages. Otherwise, it can be hard to figure out why things do not work. Debugging what’s wrong can quickly become a l… Read More
2021-06-03 04:00
Technology is constantly evolving, and to beat the competition, the teams must push the software updates to the production environment as quickly as possible. To get a faster response to suc… Read More
2021-06-02 04:00
These days, there is a lot of excitement around 12-factor apps, microservices, and service mesh, but not so much around cloud-native data. The number of conference talks, blog posts, best pr… Read More
2021-06-01 07:00
Previously we wrote Arrow Data to a Stream. Now we shall read those data from a stream. Just like on the previous blog the we shall implement the Closeable interface. This is needed to close… Read More
2021-06-01 04:00
In the first part we thoroughly went through the massive amount of features delivered in scope of JDK-9. Nevertheless, this release was always considered as being transitional, with little o… Read More
2021-05-31 06:00
Make Your Mac Unstoppable! Get 5 Award-Winning Apps for Contact Management, Cyber Security, PDF Navigation, Productivity & More Hey fellow geeks, This week, on our JCG Deals store, we ha… Read More
2021-05-31 04:00
Another post about Lightweight Config, a library I’ve recently built from the ground up, after creating various versions of it in previous projects. Where previously, I’d tried t… Read More
2021-05-30 12:15
Many frameworks provide support for pagination of results that come from a database. However, sometimes we need to implement this fairly common pattern. Using TDD construct the pagination lo… Read More
2021-05-29 12:15
Growing up in the twentieth century, I’m sure we have all witnessed our parents and grandparents taking us to do the daily chores. Be it going to the same barber to cut our hair, or go… Read More
2021-05-28 04:00
This article launches a new series exploring a retail architecture blueprint. It’s focusing on presenting access to ways of mapping successful implementations for specific use cases. I… Read More
2021-05-27 07:00
The wish to fulfil certain system quality attributes lead us to choose microservice architectures, which by their very nature are distributed, meaning that calls between the s… Read More
2021-05-27 04:00
Join us in celebrating a new release of Jakarta EE! The Jakarta EE Working Group Releases Jakarta EE 9.1 as Industry Continues to Embrace Open Source Enterprise Java! Jakarta EE 9.1 adds sup… Read More
2021-05-26 07:00
Hello in this tutorial, we will understand how to serve static files on an Express.js server. There are two ways to serve static files in express: Serving a single file through the HTTP resp… Read More
2021-05-26 04:00
Hello in this tutorial, we will understand how to handle routing in a Node.js application running on an Express.js server. 1. Introduction To set up Node.js on windows you will need to downl… Read More
2021-05-25 04:03
Hello, This time a new release of JMetro. This new version features bug fixes, tweaks to visual styles, structural changes and changes to the way JMetro is distributed and published. Read on… Read More
2021-05-24 06:00
Hey fellow geeks, This week, on our JCG Deals store, we have another extreme offer. We are offering a massive 95% off on The Complete JavaScript eBook Bundle. Get it now with only $19,99 ins… Read More
2021-05-24 04:00
In our previous article from this series shared a look at the logical common architectural elements found in a real-time stock control solution for retail organisations. The p… Read More
2021-05-23 12:15
Previously we went to create some schemas on Arrow. On this blog we will have a look on writing through streaming API. Based on the previous post’s Schema we shall create a DTO f… Read More
2021-05-22 12:15
Arrow is memory format for flat and hierarchical data. It is a popular format used by various big data tools, among them BigQuery. One of the benefits that Arrow brings is that the format of… Read More
2021-05-21 04:00
If I look at recent projects, I’ve used various forms of Git, a few variations on Jenkins, and the leading repository services – Artifactory and Nexus. In general, most of my rec… Read More
2021-05-20 04:00
Shall we use Jenkins or CodeBuild? The eternal question. On the one hand, Jenkins allows you define builds and pipelines inside your repository, on the other hand, a Jenkins server is someth… Read More
2021-05-19 07:00
This post is about some of the struggles I’ve had while dealing with configuring HTTP(s) proxy for docker daemon process. I note it here for myself as well as others who might ru… Read More
2021-05-19 04:00
Apache Ant 1.10.10 got released around a month back. Among the usual bug fixes, we added a new enhancement for the “junitlauncher” task. For those of you who haven’t used o… Read More
2021-05-18 07:00
For a majority of the population, WordPress is the more relatable word. Thanks to the ease of use and the minimal learning curve it offers to its users in setting up blogs, websites, eCommer… Read More
2021-05-18 04:00
As I move between clients, I’m building a playbook of tools I like to have/make in order to help manage the environment. While I remember how a tool needs to be made, each environment… Read More
2021-05-17 06:00
Hey fellow geeks, This week, on our JCG Deals store, we have another extreme offer.We are offering a massive 94% off on Whizlabs Online Certifications: Lifetime Membership. Get it now with o… Read More
2021-05-17 04:00
In our previous article from this series we introduced a use case around real-time stock control for retail stores. The process was laid out how we’ve approached the use… Read More
2021-05-16 12:15
The first word that comes into our mind when you say software development is ‘Java’. It has had such an impact on the modern tech world that practically revolves around it. It is… Read More
2021-05-15 04:00
Introduction JUnit 5 has a lot of underutilized features. Developers have learned how to use JUnit 4, and they utilize the same feature set when using JUnit5. The sexy DisplayName annotation… Read More
2021-05-14 04:00
Syslog. You’ve probably heard about that, especially if you are into monitoring or security. Syslog is perceived to be the common, unified way that systems can send logs to other syste… Read More
2021-05-13 04:01
This article launches a new series exploring a retail architecture blueprint. It’s focusing on presenting access to ways of mapping successful implementations for specific use cases. I… Read More
2021-05-12 07:00
Json Patch and Json Merge Patch both do one job well – a way to represent a change to a source json structure. Json Patch does it as a series of operations which tran… Read More
2021-05-12 04:00
Are you working for an enterprise that utilizes outdated software? Old software, or legacy systems, pose threats to businesses looking to streamline processes, cut costs, and stay innovative… Read More
2021-05-11 07:00
Problem Default value of retention.ms attribute on kafka topis is set to 7 days but data still persist for pre 7 days in topic. Version of kafka : 2.1.11 An interesting problem was that even… Read More
2021-05-11 04:00
Imagine going down to your local milkshake bar and signing a contract with the owner so that you could purchase bespoke drinks at a set price. Let’s say you agreed on fresh milk with 3… Read More
2021-05-10 06:00
Develop Expertise on the Leading Programming Language & Create Actual Programs with 10 Hours of Content on Java Fundamentals, Collections, Classes, and More Hey fellow geeks, This week… Read More
2021-05-10 04:00
Bulk (or batch) operations are used to perform an action on more than one resource in single request. This can help reduce networking overhead. For network performance it is usually better t… Read More
2021-05-09 12:15
Selenium is considered one of the best testing tools for automating web applications. It is a powerful tool with built-in features to support all types of actions related to the keyboard and… Read More
2021-05-07 04:00
In our previous article from this series shared a look at the logical common architectural elements found in a store health and safety solution for retail organisations. The p… Read More
2021-05-06 04:00
Developers are constantly discussing and even fighting about text editors and IDEs. Which one is better, why is it better, what’s the philosophy behind one or the other, which one make… Read More
2021-05-05 04:00
It’s been a while since I’ve blogged, and just like other posts in the past, this one is meant as a way to dig into something and for me to catalog my own thoughts for later. Whi… Read More
2021-05-04 04:00
Your team finished something difficult. They released it. You celebrated the team’s accomplishment with the team. Let’s assume your name is Jim. Now, you’re in a senior man… Read More
2021-05-03 06:04
Deliver Smooth, Secure, & Configured Process to Users and Organizations with 17 Hands-On Courses on the Top 3 Cloud Service Platforms Hey fellow geeks, This week, on our JCG Deals store… Read More
2021-05-03 04:00
A brief intro to custom thread pools and their use in Java 8 parallel streams. Examples on how to use custom pools with the Parallel streams API which avoids common thread pool usage. 1. Int… Read More
2021-05-02 04:00
A guide to group by two or more fields in java 8 streams api. Examples to grouping List by two fields. 1. Overview In this tutorial, We will learn how to group by multiple fields in java 8 u… Read More
2021-05-01 04:00
A quick guide on how to read the file in older java and new JDK 8 version with example programs. 1. Overview In this tutorial, We’ll learn how to read a file line by line in java and p… Read More
2021-04-30 04:00
For production web servers, most people assume scaling means needing faster (and more expensive) hardware. Before spending more money on servers, first make sure your web server process is u… Read More
2021-04-29 04:00
In our previous article from this series we introduced a use case around headless e-commerce for retail stores. The process was laid out how we’ve approached the use case and… Read More
2021-04-28 04:00
Jenkins Pipeline is an automation solution that lets you create simple or complex (template) pipelines via the DSL used in each pipeline. Jenkins provides two ways of developing a pipeline… Read More
2021-04-27 04:00
Developer Advocates at many organization can usually work on different things. One day they can build a demo application, help with support, improve the documentation, work on an SDK, work o… Read More
2021-04-26 06:00
Get Started on Web Development with 31 Hours of Training on Python, Django, Git & GitHub, Data Structure and More Hey fellow geeks, This week, on our JCG Deals store, we have another ext… Read More
2021-04-26 04:00
Nowadays more and more companies are moving to container-based infrastructure. But nevertheless, virtual machines hold a massive part of the market. For many projects transformation from VMs… Read More
2021-04-25 12:15
Welcome to a new series exploring a retail architecture blueprint. It’s focusing on presenting access to ways of mapping successful implementations for specific use cases. It’s a… Read More
2021-04-24 12:15
Java Records The new Java version 16 includes a new feature: Records https://openjdk.java.net/jeps/395 “Enhance the Java programming language with records, which are classes… Read More
2021-04-23 04:00
In the current world scenario, where websites have become an essential part of any business, you want yours to stand out. While every website is different in its way, what remains unchanged… Read More
2021-04-22 04:00
One of the significant challenges with automation testing is dealing with web elements that are loaded dynamically through AJAX (Asynchronous JavaScript And XML) and JavaScript. The Selenium… Read More
2021-04-21 04:00
Incorporating automated testing as a part of the testing accelerates the testing process so that issues can be identified & fixed faster. At the initial stages of product development, a… Read More
2021-04-20 04:05
However, the testers and UI people are part of pools of people. The organization calls these testers and UI people, “shared services.” Shared service-thinking denies the reality… Read More
2021-04-19 12:15
In our previous article from this series shared a look at the logical common architectural elements found in a headless e-commerce solution for retail stores. The process was… Read More
2021-04-19 06:00
Get Lost with Online Entertainment Thanks to Restriction-Free. Encrypted Browsing & Epic Collection of Classic PlayStation Games Hey fellow geeks, This week, on our JCG Deals store, we h… Read More
2021-04-18 00:15
As per the official Jenkins wiki information, a Jenkins freestyle project is a typical build job or task. This may be as simple as building or packaging an application, running tests, buildi… Read More
2021-04-17 12:15
Introduction As per a recent Developer Survey by Stack Overflow, Python is the third most sought-after programming language among developers. It is the most accessible and simplified program… Read More
2021-04-16 07:00
In our previous article from this series we introduced a use case around headless e-commerce for retail stores. The process was laid out how we’ve approached the u… Read More
2021-04-16 04:00
JDK 16 comes with the incubator module jdk.incubator.vector (JEP 338) which provides a portable API for expressing vector computations. In this post we will have a quick look at this new API… Read More
2021-04-15 07:00
Istio is an open source service mesh framework that employs traffic management, security, resiliency and observability during service to service communication. The framework itself is platfo… Read More
2021-04-15 04:00
Java 16 introduces a handy new Stream.toList() method which makes it easier to convert a stream into a list. The returned list is unmodifiable and calls to any mutator method will throw an U… Read More
2021-04-14 07:00
As a founder of a security company, I’m constantly looking for open source tools to either incorporate in our offering, or get inspiration from, or provide integration with. And there… Read More
2021-04-14 04:00
I wanted to share my tips and tricks that and especially keyboard shortcuts that make me more productive when using IntelliJ IDEA. IntelliJ is my favorite IDE and a very well thought-out pro… Read More
2021-04-13 07:00
We’re kicking off another series sharing a new architecture blueprint. It’s focusing on presenting access to ways of mapping successful implementations for specific use cases. It… Read More
2021-04-13 04:00
In our previous article from this series we shared a look at the logical common architectural elements found in point of sale imaging solution for retail stores. The process… Read More
2021-04-12 06:04
Increase Your Website’s Leads & Traffic with 26 Hours of Content on Google SEO, Video SEO, Amazon Marketing, SEO Master Class & More Hey fellow geeks, This week, on our JCG Dea… Read More
2021-04-12 04:00
In our previous article from this series we’ve introduced a use case around point of sale imaging for retail stores. The process was laid out how we’ve approached the u… Read More
2021-04-11 12:15
When testing code there are four ways to handle the dependencies that code has: Plug in the real thingUse a mocking frameworkUse an in-memory fake of the serviceUse a dockerised alternative… Read More
2021-04-10 12:15
In the previous post we saw baiscs about java 9 modules like, what is module, how to create module project, module descriptor file and so on. In this blog we will learn how to compile and ru… Read More
2021-04-09 07:00
A manager said to me, “I’m responsible for this department of people.” I asked, “What does that mean?” He said, “I’m responsible for managing the pe… Read More
2021-04-09 04:00
This post shows how you can convert a keyed table to a hierarchical tree format in kdb+/q. This could be useful if you want to display data as a tree widget in a front-end. Consider the foll… Read More
2021-04-08 07:00
Having another pair of eyes scan your code is always useful. It’s helped me get better at writing cleaner code and spot mistakes faster. You need not be an expert to review someone&rsq&hell…Read More
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