Now ladies and gentlemen! It is time for a debugging break in the series of articles about the REST service! Actually, this article is related to the REST service – it will describe a problem with the classpath-scanning of Jersey that manifest itself in standalone Spring Boot applications with a so-called fat JAR. I will also… Read More »
In this series of articles I will implement a RESTful web service using Spring Boot and Jersey. I will then modify the service as to use asynchronous server-side request processing and RXJava. Load tests will be made using Gatling before and after the modifications, in order to determine any improvements. If you haven’t read part… Read More »
In this series of articles I will implement a RESTful web service using Spring Boot and Jersey. I will then modify the service as to use asynchronous server-side request processing and RXJava. Load-tests will be made using Gatling before and after the modifications, in order to determine any improvements. Note: The example program in this… Read More »
In this post I will show how to use Spring events, which are events that can be published and listened to within a Spring application context running in one JVM. Background I was looking for a way to decouple different parts of an application I am working on. While I have read about event sourcing,… Read More »
This post is mostly notes in my own notebook, in order for myself to remember something I have found useful. Given my virtual laboratory that I created in an earlier post, it soon becomes tedious to run the same commands over and over again on the different nodes in the virtual laboratory. So I started… Read More »
In this post I will show how to run an embedded instance of ActiveMQ that uses SSL for communication. In the process I will also show how to configure a JMS client to use SSL. The resulting project is available on GitHub. I have omitted the keystore and truststore in this article – if you… Read More »
I am looking for something to help me manage multiple Docker hosts and the applications running on those hosts. Again, I will use my virtual laboratory, to start exploring the alternatives. In this first article I will look at Shipyard, which is an open-source application for managing a Docker cluster. Wishlist Before looking at anything I think… Read More »
In this post I will show a workaround for a bug that appears when testing Mule flows that contains one or more validators from the relatively new Validations Module. The bug has been verified to be present in both Mule ESB 3.7.0 and 3.8.0. There are two issues in MuleSofts JIRA here and here, but the fix… Read More »
Having set up my virtual laboratory, I thought I’d take Docker Swarm for a test. After having fiddled around a bit with the old (pre Docker 1.12) way of setting up Docker Swarm, I stumbled upon the documentation for Docker Swarm for Docker 1.12 and later. In version 1.12, which at the time of writing… Read More »
Some time ago I began thinking about setting up an environment in which I could test, for instance, running Dockerized applications on multiple computers. For a while I even considered a real server until I realised that it not only costs a lot of money to buy a server, but that the electricity bills will… Read More »