Introduction to Eclipse MicroProfile
Craftsmen visited the Oracle Code One, formerly known as JavaOne, Conference in San Francisco in October. Apart from the extracurricular activities like a bike ride (across the Golden Gate Bridge and around the Bay) and a visit to the Google Headquarters, there were lots of…
Docker Swarm, persistent connections and Spring Boot graceful shutdown
The problem Spring Boot containers still receiving requests after a shutdown is triggered in Docker Swarm, leading to errors. Background We have a production environment with Docker Swarm, based mainly on Spring Boot microservices. The containers communicate to each other using HTTP (with RestTemplate) through…
Traag maar toch snel
Sinds januari 2017 werk ik vanuit Craftsmen bij een van de grotere telecombedrijven van Nederland. Mijn team heeft hier onder meer de missie om de nieuwe mobiele app en website sneller en stabieler te maken. Een manier waarop we dit doen is het neerzetten van…
What is this DevOps thing, really?
After decades of separating operations and development teams, many are now shifting to what they call ‘DevOps’. But what is this DevOps thing, really? If you ask 10 people for their definition of DevOps, you’ll get 10 different answers. Some of the variations I’ve heard…
Hallo IOA, het nieuwe inningssysteem van de Belastingdienst
Vanaf begin 2016 is er binnen de afdeling invordering bij de Belastingdienst gebouwd aan een nieuw inningssysteem, genaamd Innen op Aangifte (IOA). Sinds juli 2016 werk ik vanuit Craftsmen op locatie bij de Belastingdienst en help ik mee aan de bouw van deze nieuwe applicatie….
Oracle Code One 2018 II
Daar gingen we dan. Maar liefst 14 collega’s van Craftsmen naar San Francisco om de grootste developer conferentie bij te wonen op het gebied van Java: Oracle Code One. The Conference Formerly Known As Java One. Oracle Code One is een vierdaags event, van maandag…
State your intentions
I recently came across Martin Fowler‘s post about FunctionLength. In that post he stated something about intention versus implementation. Although it might seem a very trivial thing, the impact on code readability is huge! For example, if I want to check if a book is…
Test behaviour, not implementation
Quite often I see unit tests that seem very interested in a class’s inner workings. This not only misses the point of a unit test, but makes the class harder to refactor, since the corresponding unit test will have to change more often as well….
Eager loading in Angular 2+
A nice and much talked about feature of Angular 2 is its support for lazy loading. The official Angular documentation website does a great job in describing its purpose. In short: it allows you to break up your Angular application in smaller modules that can…
Introduction to Modularity in Java 9
Java 9 SE is expected to be released somewhere in the beginning of the second half of 2017, and from all the changes in this release, the biggest one is JSR-376: Java Platform Module System. The project started in 2008 and was originally scheduled to…