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I’m an independent IT consultant and entrepreneur in the Internet and software business. I’m interested in design, enterprise applications, web apps and SaaS products. I design and develop business solutions and applications. I help companies in terms of software quality and knowledge transfer, e.g. with Angular and Spring Boot.

Stratospheric Online Course Early-Bird Batch #4

This week, we've released another iteration of the Stratospheric online course. With that release, we've closed our early-bird batch #3 and opened the penultimate batch. The new videos at a glance: Part I: Deploying with AWS Deploying a Network Stack with CDK Deploying a Service Stack with CDK Part II: Spring Boot & AWS Sharing Todos with Amazon SQS and Amazon SES You can find further information about the early-bird program on our website. If you want to get a feel for the course check out the sample video ... Read more

Inheriting Properties for Lombok @Builders and JPA Entities

Lombok is one of those helpful developer tools for the Java language ecosystem that streamline (or even do away with entirely) the more tedious and mundane tasks in software development. Lombok in particular vastly reduces the boilerplate code Java developers have to write by providing annotations that have code for common structures and patterns such as constructors, getters and setters, and builders automatically generated. While tremendously helpful, sometimes edge cases can occur when working with theses kinds of abstractions and as a ... Read more

spring-dotenv: Using .env Files With Spring Applications

spring-dotenv, which in turn is based on dotenv-java is a library that enables Spring applications to access and use environment variables from .env files. .env files are a convention that enables us to store environment variables locally per directory / project instead of either doing so system-wide or in an ad-hoc manner (e.g., using the export shell command), thus allowing use to more strictly follow the storing config in the environment principle from The Twelve-Factor App in Spring (Boot) applications. Read more

Bootify: Rapid Prototyping for Spring Boot

Bootify is a rapid prototyping and code generation tool for Spring Boot that aims at improving developer experience for when getting started with a new Spring Boot application. While of course there is Spring Initializr, which serves a similar purpose, Bootify not just generates a minimal Spring Boot application with the desired dependencies but, on top of that and amongst other features, also adds database schema and model generation, REST API and CRUD capabilities, and front-end code generation. With those features, Bootify is ... Read more

Testcontainers and Spring Boot From Integration Tests to Local Development – Oleg Šelajev @ Spring I/O 2022

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Spring Boot 3.0 Migration Guide

With Spring Boot 3 having been released two weeks ago, I'd like to explicitly mention the Spring Boot 3.0 migration guide again (also for personal reference and documentation purposes). While migrating to Spring Boot 3.0 in most cases will be a rather straightforward endeavour, it's good to always have clear and concise guidelines at hand to facilitate such an upgrade and to make the migration process more reliable and predictable. Read more

Spring Boot 3 Is Now Available

This week, with Spring Boot 3.0, the long awaited next iteration of Spring Boot has been released. With Spring Boot 3 having been 12 months in the making, GraalVM native image support, which among other aspects allows for much faster application startup times, probably has been the most highly anticipated feature of this next step for Spring Boot. Further new Spring Boot features comprise: a Java 17 baseline improved observability support for Jakarta EE 10 with an EE 9 baseline You can have a look at the ... Read more

A Curated List of Awesome Resources for the Spring Framework Ecosystem

Software engineer and author ("Cloud Native Spring in Action") Thomas Vitale has been curating this "list of awesome books, tutorials, courses, and resources for the Spring framework ecosystem" for two years now. That list contains mostly educational resources such as books, courses, and blogs as well as Spring-related podcasts. Read more

Stratospheric Online Course Early-Bird Batch #3

This week, we've published the next iteration of the Stratospheric online course. With that release, we've closed our early-bird batch #2 and opened the second to last batch. These are the new videos for this release: Part I: Deploying with AWS Getting Started with CDK CDK Best Practices Part II: Spring Boot & AWS Building User Registration and Login with Amazon Cognito Part I Building User Registration and Login with Amazon Cognito Part II Building User Registration and Login with Amazon Cognito Part III Part III: Production Readiness with AWS Creating ... Read more

Problem Spring Web: A Library for Handling Problems in Spring Web MVC

Problem Spring Web is an implementation of the proposed application/problem+json HTTP API problem details response for Spring Web (im both its MVC and WebFlux flavours). Error responses should be a first-class citizen when it comes to providing REST APIs. These responses often are generated in an ad-hoc, non-standardised fashion, which not only makes handling such responses more difficult and tedious in client applications but also makes for less maintainable software in the back-end software providing the API. Problem Spring Web attempts to ... Read more
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