It's a common use case to have an enterprise application, perform specific work, at a specific time or in response to a specific action. In other words, “There is an ask to execute a Job upon a predefined Trigger ”. This brings us to the need for a Scheduling System. A system, where Jobs & Trigger can be registered and the system will manage the remaining complexity. Thankfully for the Java systems, Quartz is for rescue. It‘s an open-source library that has been extensively used in enterprise applications for more than a decade. Components in Quartz Sub System: Following are the all major component in the Quartz subsystem: Scheduler : It’s the control room of Quartz. It maintains everything required for scheduling, such as managing listeners , scheduling jobs , clustering, transactions & job persistence. It maintains a registry of JobDetails , Listeners & Triggers , and exec...
If you want to avoid overpriced pre-builts like the M1 Mac Mini, Mac Pro, or Dell XPS Desktop without compromising on performance, a self-built desktop is a preferred option. It's also a great choice if you enjoy building things. custom built with ASUS-PRIME-P If you choose to build a custom PC, be prepared to invest time in researching and assembling compatible components. In this post, I'll share my experience building this colorful powerhouse. I'll cover: Why did I do it. Key questions to ask when selecting components Thought process behind component choices Components used in my build Benchmark comparisons . ** My second custom-build **. *** Disclaimer: Not an Apple product. Just a free apple sticker is used *** Why did I do it I decided to get a desktop during the pre-MacM1 era (yes, that’s a thing). After browsing many websites, I found that well-configured prebuilt PCs were overpriced, while cheaper ones had subpar components. Unable to choose betwee...
Once, I was working on a few geospatial APIs handling many time zones. While writing tests, I realized I did not know much about timezones. A lame excuse might be, my subpar schooling as a village kid. Nevertheless, I decided to turn the pages on timezones, what I found was more politics than science. Photo by Arpit Rastogi on Unsplash Before diving into anomalies, let’s talk about history then we will go to science followed by politics. History The world without time zones By 300 BCE, the western world agreed that the earth is round. Each developed civilization devised its unique distinct system to measure distances, times & absolute locations, but relative to prime locations within their civilizations. It all worked in ancient times because long-distance travel was not prevalent among common people. Only merchants or armies traveled long distances. And they already developed systems that worked on their predetermined routes, irrespective of the time differences b...
During our java based microservice development, we extensively use build tools like Maven or Gradle. Usually, IDEs do a lot on our behalf or we just run some predefined commands without checking what's happening inside. Here in this series of 6 posts, I tried to explain Maven. Before I start talking about what Maven is, and its different components, let’s discuss the “why”. Why do we even need Maven? For this, I’ve to first explain the nature of a Java-based project and also need to take you back in history. The “Build” Step. Java is a compilable language, Unlike Python or Javascript, which are interpreted. ie, the code we write in java, can not as-is run on a Java virtual machine (JVM). JVM understands only the bytecode. Therefore, in the Java world, there is always a need for an intermediary step. A step that compiles the java code files into bytecode. That's why after writing the java code, we “somehow” create some deployable (jar, war, ear) to run on ma...
A wise man ( narcissist me ) once said, “Life is all about the question and answers. The trick to a meaningful life is, To ask the right questions to yourself, so you can get on the right path to search for the answer .” The very first question one should always ask oneself is WHY. Let's discuss our WHY in the current case. Why BDD Let's take a step back and start with the well-known software development practice TDD ( Test-Driven Development). In TDD, the very first thing developers do is, set up the technical expectations from the code by writing failing test cases. After the expectation is set, the code is written/modified to finally pass all of the failing tests. It's an Acceptance driven development strategy . TDD works fine to create a robust technically working product. But the whole TDD approach revolves only around technical teams. It barely involves the business analysis or product owners to validate the business aspect of a feature, they get involved o...
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