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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Red Hat JBoss BPM Suite -Reusing a BPM process as a subprocess inside another BPM process which is in a different repository

rpm-vs-yum

In this video, under 5 minutes, I am demonstrating how to use a process (process2) as a subprocess in another process (process1) which is actually in a separate repository (repo1). I placed the BPM Suite console and 2 folders (“.niogit”

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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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Java Error: Could not find or load main class

When you are creating apps using an IDE like Eclipse or IntelliJ IDEA, compiling and running your code is pretty easy since the IDE will take care of many of the things behind the scenes. But you may encounter this

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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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Indexing, Retrieving, Deleting Documents in Elastic Search (Using Kibana)

elastic-search-kibana

Indexing, Retrieving, Deleting Documents in Elastic Search (Using Kibana) Elasticsearch (ELK Stack) – Part 1 I have been playing around with ELK (Elasticsearch, Logstash, Kibana – Elastic Stack) and I though I would paste some of my notes here. The

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Linking Jenkins to a Local Git Repository

I wanted to try creating a CI (continuous integration) pipeline using Jenkins at home for fun 🙂 I launched IntelliJ IDEA by jetbrains and created an empty test project. Then I added this project to Git. In case you don’t know

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