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jstat – Analysis

jstat is a simple utility tool, that is present in JDK to provide JVM performance-related statistics like garbage collection, compilation activities. The major strength of jstat is its ability to capture these metrics dynamically when JVM is running without any pre-requisite instrumentation. What do we mean by it? Say for example if you want to capture garbage collection related statistics, you ...

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CUBA Platform: TypeScript SDK and REST API

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In this article, we will talk about the feature of the CUBA platform that exists for quite a long time, but is still not widely known – front-end SDK generator, and see how it works with CUBA’s REST API addon. Java+JavaScript – marriage born in web Only eight years ago we, Java developers, used JavaScript as a “second-class citizen” language ...

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Microservices in Publish-Subscribe communication using Apache Kafka as a Messaging Systems and validated through Integration Test

Publish-Subscribe Messaging systems play an important role in any enterprise architecture as it enables reliable integration without tightly coupling the applications. The ability to share data between decoupled systems is not a problem that is easily tackled. Consider an enterprise with multiple applications that are being built independently, with different languages and platforms. It needs to share data and processes ...

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Memory wasted by Spring Boot Application

spring-interview-questions-answers

One of the widely wasted resources in the world today is Memory. Due to inefficient programming, surprising (sometimes ‘shocking’) amount of memory is wasted. We see this pattern repeated in several enterprise applications. To prove this case, we conducted a small study. We analyzed the famous spring boot pet clinic application to see how much memory it is wasting. This ...

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Supporting Java 8

Although Java has version 13 released as for now, there are a lot of production installations running with Java 8. As a professional, I develop Java 8 code many times even these days and I have to be happy that this is not Java 6. On the other hand as an open-source developer, I have my liberty to develop my ...

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Complexity Accidental vs Essential

Today it is hard to find team or organization that is not following agile but building software has not become easy, projects are missing schedule , over budget and it is also flawed. Why it is so hard to build software ? If you ask this questions to any engineer then 90%+ will say requirement, but is that the full ...

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Hash a Json

I recently wrote a simple library to predictably hash a json. The utility is built on top of the excellent Jackson Json parsing library Problem I needed a hash generated out of a fairly large json based content to later determine if the content has changed at all. Treating json as a string is not an option as formatting, shuffling ...

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Deploy with Confidence: How Healthcare Companies Ensure App Reliability for Their Customers

For people that build, deliver and manage software in the healthcare industry, application reliability is an absolute necessity. With patients’ privacy and wellbeing at stake, there is little to no room for application downtime or other software failures.  Empowered, a subsidiary of Aflac Incorporated, manages a digital platform that simplifies the process of selecting and enrolling employees in benefits offerings ...

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How to Build a Maven Plugin

Easily deploy your app with Okta’s identity management platform Use Okta’s API to authenticate, manage, and secure users in any app within minutes. Try Okta today. Apache Maven is still the most popular build tool in the Java space, thanks to the popularity of its ecosystem of plugins. It’s easy to find an existing plugin to do almost anything your ...

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