I often notice people wondering if and how it’s possible to run Spring Boot on AWS Lambda Functions. I understand this because I know developers in the Java ecosystem often use the Spring Framework. And since more and more people built Lambda functions using Java, the question will be asked at some point. It’s definitely […]
Using Spring Boot On AWS Lambda: Clever or Dumb? Read More »
Running cloud services on your local machine is often a problem because there is no local version available. Thankfully DynamoDB provides a local version of their database. This makes unit testing cloud services a lot easier if you’re relying on DynamoDB. Unfortunately, setting up DynamoDB Local and combining it with Testcontainers and Bitbucket Pipelines in
Using DynamoDB Local and Testcontainers in Java within Bitbucket Pipelines Read More »
Last week I have attended JavaLand 2019 which was a great experience for me. Lots of different people, interesting talks and great speakers! It was my first time there and I have to admit: not only the usual conference content was great, but also the location was really unique – it’s located in Phantasia Land,
Visiting JavaLand 2019 Read More »
In every software application, there are usually two main reasons to cache data: a) to improve performance and b) to reduce costs. Caching in AWS Lambda is not different. Instead, the reasons for caching might be even more important in this context. This blog post explains why it could be necessary for you and shows
Caching in AWS Lambda Read More »
AWS Lambda is actually made to be used by implementing small functions which can be started quickly. So your code artifact should be as small as possible for a fast startup time. However, in the Java world there are nice frameworks like Jersey and Spring which can help you writing code for an API a
Use Jersey and Spring in AWS Lambda Read More »
Today I want to show you three starter projects for AWS Lambda using CloudFormation and SAM – Serverless Application Model. I always like if I have some boilerplate code and can get started quickly without copying code or project structures from an existing (and mature) project. Therefore I thought it’s good to have them in
Starter Projects For AWS Lambda Using NodeJS And Java Read More »
A few years ago, Amazon Web Services (AWS) launched it’s new service AWS Lambda. Since its start the service is generating more and more interest for the whole world of serverless computing. I’ve also started using it this year and today I want to share 5 things with you what I think is important when developing
5 Things To Consider For Writing A Lambda Function Read More »
As mentioned in the last post to JMapViewer, I want to show you how to start the Dijkstra shortest path algorithm using JMapViewer. Based on this Gist, I will briefly explain how to call Dijkstra and visualise the shortest path.
Start Dijkstra Shortest Path using JMapViewer Read More »
Recently I was building a private hobby project where I wanted to use Heroku to deploy some Microservices and get some experience with it. Since I’m a Java enthusiast, I wanted to use a Multi-Module Maven project to also share some classes to the different microservices. So my mission was to deploy each submodule to
Deploy a Multi-Module Maven Project to Heroku Read More »
Some time ago I had to test a web app where a popup was triggered if the user hovers over a specific link. This is not as easy as testing if an element contains a specific text. But it’s possible using Selenium Actions. These class provides methods to perform some custom gestures on a page, like
How to test a web app with popups using Selenium Read More »