In that post we will show the case of how you can mix the usage of the Resilience4j spring boot starter and spring cloud circuit breaker starter so you can configure externally through spring configuration your circuit breakers definitions if you do not want to use the code configuration approach provided by Spring cloud circuit breaker starter through Customizers.
If you are developing Spring boot/Java application for Kubernetes, you will find out that testing and debugging the application during the daily local development is very complex and time consuming, since you have to keep doing
Build the application through the build tool
Build the docker image from docker terminal or build tool
Push the container image to a docker registry
Create/Refresh the Kubernetes’ objects with rolling deployment updates
But today we will cover how we can do that in a robust almost automated way to give the same old web typical web application development experience and you will end up feeling it is the same at the end .
we are going to show how to make your developer experience more manageable through the usage of the following:
We will cover here how to do DAO integration test when you have spring boot application with PostgreSQL DB and liquibase for schema versioning , last time we have explained how to do the same without liquibase using embedded PostgreSQL in this post but this time we will do the same but using docker with test containers which will apply your liquibase changes and making sure you DAO integration test has the same environment as production database environment if you are using docker for your data base in production .
Here we will go through how to use embedded PostgreSQL in you local development environment plus how to use it for DAO integration/unit testing if you have are using PostgreSQL as your production database , you DAO testing should use the same database as your production one to have behavior consistency and same environment precondition.
Here I am going to share a custom toolkit wrapped as a spring boot with AKKA persistence starter to act as a read made toolkit for event driven asynchronous non blocking flow API , event sourcing and CQRS implementation within spring boot services which can be part of spring cloud micro-services infrastructure . Continue reading →