Blog:

Connect to Cloud SQL from App Engine

How to connect from an application running on Google Cloud App Engine to a PostgreSQL database running in Cloud SQL.

How to connect from an application running on Google Cloud App Engine to a PostgreSQL database running in Cloud SQL......

11.07.2022

Deploy to Google Cloud App Engine with GitHub Actions

In my previous post, I was explaining how to deploy to Google Cloud. The final missing part was to deploy it automatically with GitHub actions.
The authentication will be done with Workload Identity Federation.

In my previous post, I was explaining how to deploy to Google Cloud. The final missing part was to deploy it automatically with GitHub actions. The .....

08.07.2022

How to Deploy a Vaadin Application to Google Cloud App Engine

Today I tried to deploy a Vaadin application to Google Cloud App Engine
It was not as straightforward as expected so I want to share my findings.

Today I tried to deploy a Vaadin application to Google Cloud App Engine It was not as straightforward as expected so I want to share my findings......

04.07.2022

How to use jOOQ with Testcontainers and, Flyway

When using a database the question is how to manage the versions of the schema and how to use the database in testing. Container technologies became a defacto standard. Why not use containers for development and your database?

When using a database the question is how to manage the versions of the schema and how to use the database in testing. Container technologies became a.....

29.04.2022

Visualization of the Message Flow between Business Functions with Vaadin and Neo4j

Analyzing and visualizing the message flow between business functions was the goal of my current project. At first, we considered using a UML tool for this job, but we came to the conclusion that it might not be as flexible as we need it to be. Finally, I’ve got the assignment to create a custom web application.

Analyzing and visualizing the message flow between business functions was the goal of my current project. At first, we considered using a UML tool for.....

16.03.2022

Vaadin and jOOQ: Match Made in Heaven

Have you ever had to write an application that didn’t do much other than display and change data? And did you use a Single Page Application framework like Angular, a REST API, and Hibernate?

Have you ever had to write an application that didn’t do much other than display and change data? And did you use a Single Page Application .....

09.03.2022

Java 16 Records with JPA and jOOQ

The new Java version 16 includes a new feature: Records

The new Java version 16 includes a new feature: Records.....

20.04.2021

Vaadin Tip: Lazy Loading and Item Identity

When using grids, trees, or any other of the multi-valued component with Vaadin you often want to display data from a database table, and typically you have more than a few rows in the database.
In this case loading, thousands or even millions of records don’t make sense and would be a huge performance problem.

When using grids, trees, or any other of the multi-valued component with Vaadin you often want to display data from a database table, and typically .....

15.06.2020

Type Safe SQL in Java

No matter if you are using frameworks like JPA, MyBatis or Spring Data JDBC you always end up declaring the SQL statements as a Java String.

No matter if you are using frameworks like JPA, MyBatis or Spring Data JDBC you always end up declaring the SQL statements as a Java String......

28.06.2019

Java Persistence Done Right

When it comes to accessing relational databases with Java, people usually think of two options: SQL or ORM

When it comes to accessing relational databases with Java, people usually think of two options: SQL or ORM.....

07.06.2019