Only recent messages are now shown and the most recent messages will be sorted on top! Also, you can leave your pseudonym as author and the posts have a visible timestamp. Check it out here: https://nickvanhoof.com/a-lambda-guestbook A few weeks ago I created a guestbook linked to this website which uses AWS lambda’s and DynamoDB in the […]
Hi y’all, Wanna go straight to the result, a guestbook using aws Lambda Functions: here. Some more detail: I implemented business logic for lambdas at work before. But when I did the infrastructure to deploy and run the lambda was already in place. So I wanted to start from scratch with a simple example. This […]
Immutable Objects An immutable object is a read-only object (you cannot change it’s properties). It’s easy to test and automatically thread-safe. Since it’s properties cannot be changed. The object will never have an invalid state. Follow this strategy to make a class immutable: Use a constructor to set ALL properties of the object (it’s immutable, […]
Intro to singletons When applying the singleton pattern we are aiming to create only one instance of a class in memory of the application. Singleton pattern makes sure that: only one instance of a class is in the application there is one point of access to this object within the application Singleton: Singletons are obtained as […]
Can you stay with me till the end of the post? 🙂 Did you know that: The return type of an overridden method should be the same or more restrictive aka covariant return types abstract methods are not allowed in a class that is not abstract all methods in an interface are public the interface itself […]
As a Java developer it speaks for itself that I’m using Java most of the time. Recently I had to develop an AWS Lambda using Node.js. I had a great time learning about JavaScript. I learned about promises, async/await and functional programming in JavaScript. I created a small code-example below. This example will fetch some […]
I updated the layout of the quiz app to be a little less 90’s. Find it here. (Username: Nick, password: Nack)
Tonight we’re moving our VPC (and this website) to Ireland. Exciting! -No downtime expected..
So you have a server in the States but your living in France. Guess what.. The server time is different from your local time. Fix To find the available timezones cd into : cd /usr/share/zoneinfo ls Allright! I see Europe and when I cd into Europe I find Paris. So remember “Europe/Paris”. Now go […]
While I was studying for my java SE 8 Programmer II exam, it popped into my mind: “Let me make a small app to practice with some questions” And so I did! If you have idea’s for features to add, throw them in the comments! Check out the app: here Explain! Randomly you will […]
