Tag Archives: Spring Boot

Testcontainers is a Java library that allows integrating Docker containers in JUnit tests with ease. In a Containerized World, there is little sense to complicate the tests configuration with embedded databases and services. Instead, use run your services in Docker and let the Testcontainers manage this for you. In this blog post you will learn how to configure Testcontainers to ...

In the previous blog we setup a reactive application with micrometer backed with an InfluxDB. On this tutorial we shall use our old school blocking Servlet Based Spring Stack with JDBC. My database of choice would be postgresql. I shall use the same scripts of a previous blog post. Thus we shall have the script that initializes the database 01 ...

In this blog post you will learn how to configure Spring Boot application with PostgreSQL for running with Docker Compose. This blog post covers: Spring Boot application Dockerfile configuration with clean separation between dependencies and resourcesDocker Compose configuration for running the application with PostgreSQL Prerequisites DockerJava 13Terminalhttpie (or curl) Application Generate the Maven based Spring Boot application with Spring Web, ...

I recently worked on a project where I had to efficiently process a large number of messages streaming in through an AWS SQS Queue. In this post (and potentially one more), I will go over the approach that I took to process the messages using the excellent Project Reactor The following is the kind of set-up that I am aiming ...

Since we added our base application it is time for us to spin up an InfluxDB instance. We shall follow a previous tutorial and add a docker instance. docker run –rm -p 8086:8086 –name influxdb-local influxdb Time to add the micrometer InfluxDB dependency on our pom 01 02 03 04 05 06 07 08 09 10 11 12 13 14 ...

To those who follow this blog it’s no wonder that I tend to use InfluxDB a lot. I like the fact that it is a real single purpose database (time series) with many features and also comes with enterprise support. Spring is also one of the tools of my choice. Thus in this blog we shall integrate spring with micrometer ...

Introduction When working with micro services it is common to have unified access-point to your system (also called API Gateway). Consumers only talk with the API Gateway and not with the services directly. This hides the fact that your system is composed out of multiple smaller services. The API Gateway also helps solving common challenges like authentication, managing cross-origin resource ...

WebClient is Spring Framework‘s reactive client for making service to service calls. WebClient has become a go to utility for me, however I unexpectedly encountered an issue recently in the way it handles Java 8 time fields that tripped me up and this post goes into the details. Happy Path First the happy path. When using a WebClient, Spring Boot ...

We all are aware of profile management in Spring Boot and the flexibility it provides in configuring our applications for different environments. The other powerful aspect of this is that at any given time we can have multiple active profiles. The advantage this gives is that we can mix the deployment environment profile along with business use case related profiles. ...