Introduction to Persistent Storage In OpenShift

openshift persistent volumes

Not all the containers in your cluster will be non-persistent or ephemeral. Most of the time you will need persistent containers running all around the place to hold some sort of data. To store the data independent of the lifetime

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Spring MVC Workflow – Understanding How Spring MVC Mechanism Works

Let’s start by observing the figure below:   First, the request is received by the DispatcherServlet. DispatcherServlet is a front controller. It is like a super controller who redirects all the requests to the corresponding handler methods inside the controller classes.

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Continuous Integration, Continuous Delivery and Continuous Deployment with Red Hat OpenShift

openshift persistent volumes

In this post, I want to briefly explain the differences between Continuous Integration, Continuous Delivery, and Continuous Deployment. I will keep this very brief and try to make it as easy to understand as possible.   What is Continuous Integration

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Spring Component Annotation and further stereotype annotations

spring-spring-mvc-spring-boot

In this post I would like to share with you some enlightening quotes from spring documentation. Here you will see the difference between some of the spring annotations like @component, @service, @repository, @controller, what it means to use them or can

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Microservice Registration and Discovery with Eureka and FeignClient

netflix-eureka

In this post, I will try to guide you on how to develop with Spring’s wrapping of Netflix’s Eureka. Eureka is a REST (Representational State Transfer) based service that is primarily used in the AWS cloud for locating services for the purpose of

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What is yum? What is RPM? What is the Difference?

rpm-vs-yum

What is RPM? RPM stands for Red Hat Package Manager. It was developed by Red Hat that found widespread acceptance in many Linux distros. This is a command-line tool that you can use to install, delete, update packages in your OS.

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Weird White Block Appears and Disappears When Click on TextArea

I was seeing this weird white block appearing and disappearing on my page when I click a textarea inside a bootstrap modal popup. Apparently, this is caused by Grammarly’s Chrome add-on.  Open the developer tools of chrome and observe the

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Java Spring Framework vs. Spring MVC vs. Spring Boot

spring-spring-mvc-spring-boot

New to Java world? Confused about what is what? What is Spring? What is Spring MVC? What is Spring Boot? Let me “briefly” explain the differences and what they are used for. What is Java Spring Framework? Spring Framework is

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