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Author Archives: Pascal Alma

Pascal is a senior JEE Developer and Architect at 4Synergy in The Netherlands. Pascal has been designing and building J2EE applications since 2001. He is particularly interested in Open Source toolstack (Mule, Spring Framework, JBoss) and technologies like Web Services, SOA and Cloud technologies. Specialties: JEE, SOA, Mule ESB, Maven, Cloud Technology, Amazon AWS.

Set up private blockchain with Ethereum (part 2)

In my previous post I set up a network of two nodes running a private blockchain. In this post I use it to create accounts, mine some ether and browse the blockchain with the Mist browser on my Mac. First I make sure the nodes are up and running. Then I go to the ‘geth’ console that runs on node1. ...

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Set up private blockchain with Ethereum (part 1)

I don’t think it needs introduction about the current hype that is going on with Blockchain, bitcoin, Ethereum and other initiatives. To get more feeling about what it is and how it works I decided to have a go with Ethereum as it promises to be a possible disruptive solution for lots of different use cases. Without going into the ...

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Use Spring Cloud Config as externalized configuration

spring-interview-questions-answers

One of the most important practices when it comes to continuous delivery is building your binaries only once and use that one in the different environments (dev, test, acceptance, etc). This means that most likely you will need to externalize your configuration of your application. With Spring Boot applications it comes down to keep the values of your properties in ...

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Pipeline as code with a Spring Boot application

spring-interview-questions-answers

This is the last in a serie of posts about continuous delivery based on my local Docker compose stack (see the first and second post here). In this post I use a simple Spring Boot project to show how to make use of the ‘pipeline as code‘ concept. Please note that this is only an example and much, much more ...

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Set up your own Continuous Delivery stack

Last week I wanted to try new things with ‘pipeline as code’ with Jenkins. The best way to try new things is running it as Docker containers. This way I can keep my MacBook clean and don’t mess up existing stuff I am working on (also see this article about what Docker can offer for a developer). Another big advantage ...

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Making Spring Boot application run serverless with AWS

spring-interview-questions-answers

In several previous posts I described how to setup your Spring Boot application and run it on AWS Elastic Beanstalk. Although this is a great step to go from a physical server to one in the cloud there is an even better step possible! Going serverless. That means no costs for any server and no maintenance or configuring of servers! ...

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Configure AWS Elastic Beanstalk application to use SSL

In this post I show you how to set up HTTPS for an application (REST API) running on AWS Elastic Beanstalk. This post is the last in a serie of three. As described in my previous two post I have performed the first two steps to obtain a SSL certificate for my subdomain and I am ready to use it ...

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Get a Certificate from AWS Certificate Manager

Recently AWS made the ‘Certificate Manager‘ service available in the Europe region. With this service you will be able to use SSL certificate (for free) with your applications hosted on AWS. The big advantage compared to the solution I described here is that this way I don’t have to put the certificate in my source code or have to copy ...

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