Home » Author Archives: Biju Kunjummen

Author Archives: Biju Kunjummen

Introducing “Yet another” Cloud foundry Gradle plugin

gradle-logo

In the process of working on an automated Jenkins pipeline for deploying a Cloud Foundry application with two of my colleagues(Thanks Mark Alston, Dave Malone !) I decided to try my hand on writing a Gradle plugin to perform some of the tasks that are typically done using a command line Cloud Foundry Client. Introducing the totally unimaginatively named “ya-cf-app-gradle-plugin” with a set of gradle ...

Read More »

Spring Cloud Zuul – Writing a Filter

spring-interview-questions-answers

Netflix OSS project Zuul serves as a gateway to backend services and provides support for adding in edge features like security, routing. In the Zuul world specific edge features are provided by components called the Zuul Filter and writing such a filter for a Spring Cloud based project is very simple. A good reference to adding a filter is here. Here I ...

Read More »

Spring Cloud Zuul Support – Configuring Timeouts

spring-interview-questions-answers

Spring Cloud provides support for Netflix Zuul – a toolkit for creating edge services with routing and filtering capabilities. Zuul Proxy support is very comprehensively documented at the Spring Cloud site. My objective here is to focus on a small set of attributes relating to handling timeouts when dealing with the proxied services. Target Service and Gateway To study timeouts better I have ...

Read More »

Spring-Reactive samples

spring-interview-questions-answers

Spring-Reactive aims to bring reactive programming support to Spring based projects and this is expected to be available for the timelines of Spring 5. My intention here is to exercise some of the very basic signatures for REST endpoints with this model. Before I go ahead let me acknowledge that this entire sample is completely based on the samples which Sébastien Deleuze has ...

Read More »

Cloud Foundry Java Client – Streaming events

java-interview-questions-answers

Cloud Foundry Java Client provides Java based bindings for interacting with a running Cloud Foundry instance. One of the neat things about this project is that it has embraced the Reactive Stream based API’s for its method signatures, specifically using the Reactor implementation, this is especially useful when consuming streaming data. In this post I want to demonstrate a specific use case where ...

Read More »

Scatter-Gather using Spring Reactor Core

spring-interview-questions-answers

I have a good working experience in using the Netflix Rx-Java libraries and have previously blogged about using Rx-Java and Java 8 CompletableFuture for a scatter-gather kind of problems. Here I want to explore applying the same pattern using the Spring Reactor Core library. tldr – If you are familiar with Netflix Rx-Java, you already know Spring Reactor Core, the API’s map beautifully ...

Read More »

First steps to Spring Boot Cassandra

apache-cassandra-logo

If you want to start using Cassandra NoSQL database with Spring Boot, the best resource is likely the Cassandra samples available here and the Spring data Cassandra documentation. Here I will take a little more roundabout way, by actually installing Cassandra locally and running a basic test against it and I aim to develop this sample into a more comprehensive example with the next ...

Read More »

Spring Boot with Scala

spring-interview-questions-answers

A while back I had tried out a small Spring Boot  based sample with Scala as the language and found that the combination works out quite nicely – no big surprises there actually as Scala programs ultimately run in the JVM. I have now updated the sample with the latest version of Spring Boot and some of the supporting libraries. ...

Read More »

Want to take your Java skills to the next level?

Grab our programming books for FREE!

Here are some of the eBooks you will get:

  • Advanced Java Guide
  • Java Design Patterns
  • JMeter Tutorial
  • Java 8 Features Tutorial
  • JUnit Tutorial
  • JSF Programming Cookbook
  • Java Concurrency Essentials