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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: 1-Year Anniversary Sale and Release 1.8

It’s been exactly one year since we have released version 1.0 of the Stratospheric book. The book already has 900 readers on Leanpub. Let’s make it 1,000 this month! We want to celebrate the anniversary with you by releasing version 1.8 of the book and doing an anniversary sale. You can read more about the new release in this blog post on the Stratospheric website. Read more

Modern Frontends Using Spring Boot and Thymeleaf With Htmx by Wim Deblauwe @ Spring I/O 2022

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HTTP Status Codes in a Nutshell

Recently, full-stack developer Parik tweeted this slide from a talk that neatly - if in a somewhat flippant manner - summarises HTTP status codes: https://twitter.com/parik36/status/1521467121720598536 1**: "Hold on!" 2** "Here you go!" 3**: "Go away!" 4**: "You fucked up." 5**: "I fucked up." In other - only slightly more technical - terms, HTTP status codes can be categorised as: 1**: Informational 2** Successful 3**: Redirects 4**: Client errors 5**: Server error Read more

New Stratospheric Blog Post on Faster Amazon ECS Container Deployments

This week, we published a new Stratospheric blog post on how we achieved faster Amazon ECS Container deployments. So, if you're running containerized applications on AWS you might want to check this out. While that specific example uses the AWS CDK in its Java incarnation the general ideas and settings are generally applicable and therefore should easily translate to other languages and environments, too. Read more

Stratospheric Online Course: Early-Bird Offer

Earlier his week, we finally released the first iteration of the Stratospheric Online Course - a companion course to our ebook "Stratospheric - From Zero to Production with Spring Boot and AWS"! Having just returned from Spring I/O 2022 in Barcelona - where, incidentally, the authors of Stratospheric met in person for the first time - I can say there are quite a few exciting things in store for Spring Boot and Spring in the near future, particularly when it comes to ... Read more

Manuel Matuzovic – Lost in Translation @ beyond tellerrand Düsseldorf 2022

At beyond tellerrand Düsseldorf 2022 frontend developer and accessibility expert Manuel Matuzović gave this insightful - and genuinely funny - talk on web accessibility and in particular on how information often gets lost when web developers focus almost exclusively - to the exclusion of semantics and a design's intent - on the visual aspects while translating requirements into HTML and CSS: Read more

7 Practical Design Tips

Some time ago, Adam Wathan & Steve Schoger of Tailwind CSS and Refactoring UI published this article with "7 Practical Tips for Cheating at Design". While I don't think that you can actually cheat at design, design being a skill that can and has to be learned, practiced, and honed like any other, pragmatic advice such as using colour and font weight for creating information hierarchy can help with achieving some quick wins and reaping the low-hanging fruit when it comes to ... Read more

Stratospheric – 1.6 Released: AWS CDK Bootstrapping 🏗

This week, we released version 1.6 of Stratospheric - From Zero to Production with Spring Boot and AWS. The main reason behind this release is that we somehow entirely missed talking about an important topic: Bootstrapping an AWS environment for the AWS CDK. You may have already run into this issue when trying to deploy one of our AWS CDK stacks: Has the environment been bootstrapped? Please run 'cdk bootstrap' We've now added a dedicated section on the AWS environment bootstrapping and explained the why ... Read more

Spring Framework RCE Vulnerability With War File Deployments on Tomcat

Yesterday, an RCE vulnerability in the Spring Framework has been announced: Spring Framework RCE, Early Announcement CVE-2022-22965: Spring Framework RCE via Data Binding on JDK 9+ While, as of now, only WAR deployments of Spring Boot applications running under Apache Tomcat seem to be affected, it is still recommended to upgrade to Spring Boot 2.6.6 as soon as possible, even for Spring-based applications deployed as a JAR, because "the vulnerability is more general, and there may be other ways to exploit it that have ... Read more

Documenting REST APIs Provided by Express Applications

swagger-jsdoc is an NPM library that allows us to generate an OpenAPI specification for REST APIs provided by an Express application. swagger-jsdoc consumes YAML-formatted OpenAPI specification segments within JSDoc comments annotated with the @openapi annotation and turns those into a comprehensive OpenAPI specification for our API. This specification, in turn, can for example be used for automatically having a Swagger UI documentation page created for our REST APIs (using Swagger UI Express, for instance). While annotating Express routes with syntactically and semantically correct OpenAPI ... Read more
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