Java – My Developer Planet

How to Monitor a Spring Boot App

In this blog you will learn how to monitor a Spring Boot application. You will make use of Spring Actuator, Micrometer, Prometheus and Grafana. Seems a lot of work, but this is easier as you might think!

Getting Started With RSocket Part 2

In this blog, you will continue where you left off after Part 1. You will explore the RSocket communication models Fire-and-Forget, Request-Stream and Channel. For all of these models, you will create the server, client and a unit test.

Getting Started With RSocket Part 1

In this blog, you will learn the basics of RSocket, a binary application protocol which supports Reactive Streams. After the introduction, you will learn how to use RSocket in combination with Spring Boot. Enjoy!

How to Start Contributing to Open Source

Every now and then, the idea of contributing to Open Source Software crosses the mind of every developer. However, often, it just remains to think about it instead of actually doing something. In this blog, I want to tell the story of my first Pull Request.

How to Create an AWS Continuous Deployment Pipeline Cont’d

In our previous post, we showed how to create an AWS Continuous Deployment Pipeline. This post will continue where we left off. We will enhance the pipeline with a Review stage, a more efficient use of the Maven cache and add notifications to the pipeline.

How to Create an AWS Continuous Deployment Pipeline

Creating a continuous deployment pipeline will bring us a step closer to an automated build, test, deploy strategy. In order to create such a pipeline, we need to have access to several tools. Instead of installing these on on-premise servers, we can make use of the AWS cloud offer. Let’s see how this can be accomplished!

How to Deploy a Spring Cloud Function on AWS Lambda

In this post, we will create a Spring Cloud Function and create some unit tests for it. We will do so by creating a function with Bean definition and with the functional style. At the end, we will deploy the function on AWS Lambda.

How to Deploy a Spring Boot App to AWS Elastic Beanstalk

In this post, we are going to explore how we can deploy a simple Spring Boot application to AWS Elastic Beanstalk. We will explain how to setup an AWS account and provide a step-by-step guide how to deploy to AWS.

Java Streams By Example

In this blog, we are going to take a closer look at the Java 8 Streams API. We will mainly do so by means of examples. We will cover many operations and after reading this blog, you will have a very good basic understanding of the Streams API. Enjoy reading!

J-Spring Digital 2020 Impressions

This year’s edition of J-Spring, organized by the NLJUG, went digital due to the COVID-19 pandemic. From the 23rd up to and including the 26th of June, every day two technical talks have been held. We attended this digital version of J-Spring and want to share some of our impressions. Enjoy!