software development ⁽⁵⁵⁾

What is it about? We define an API contract as a formal agreement between a software provider and a consumer that abstractly communicates how to interact with each other. This contract defines how API providers and consumers interact, what data exchanges looks like, and how…

Enable Kubernetes in Docker Desktop We will use Docker Desktop to provide us a Test Kubernetes Environment. Open Docker Desktop Settings, go to Tab "Kubernetes". Select "Enable Kubernetes", then "Apply & Restart". Now you should be able to see docker-desktop listed, if you run kubectl…

Pre-Requirements Developer Environment ready with Docker, JDK, IDE A Java Spring Boot Project with a h2 in-memory DB Docker Hub account Create Docker File Create a Dockerfile with the following content: FROM openjdk:11-jre-slim ENV JAVA_OPTS " -Xms512m -Xmx512m -Djava.security.egd=file:///dev/./urandom" WORKDIR application COPY target/myapp-0.0.1-SNAPSHOT.jar ./ ENTRYPOINT…

What is Validation? Validation is a process of making assertions against data to ensure data integrity Is a value required? How long is a phone number? Is it a good date? What is the maximum length of a string? Some refer to data validation as…

Data Transfer Objects DTOs - Data Transfer Objects DTOs are simple Java POJOs DTOs are data structures, generally should NOT have behavior DTOs are objects used to transfer data between producers and consumers Controller models are typically DTOs Why Not Entities? Database Entities are also…