In addition to our podcast, here comes the matching blog post on our HCD topic in fixed-price projects.
Budgets and deadlines are usually fixed, but it should also be user-centered – how can the Human Centered Design process (HCD) be used productively and efficiently despite these limitations? That is the topic we are addressing today.
Continue readingWebSockets provide a flexible bi-directional way to communicate between the web browser and the backend server. In particular, it allows the server to send push messages to the client in order to inform it about data updates and the like.
However, the Java API only allows for static Object encoders and decoders, i.e. they cannot use dependency injection. We will show here to circumvent this problem and provide extensible message encoding using JSON.
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Our five design principles are signposts for our development. They ensure that the users remain in focus. This article is about each of these principles and why they were chosen.
Continue readingThis blog article is part of a “series of blog articles” about common pitfalls using JPA and ways to avoid them. In this article, we describe a problem with unextected changes when using DTOs.
Continue readingRust is getting more and more popular. Thus, a group of colleagues, including myself, evaluated it for half a day to build up our own opinion, if Rust is of strategic interest for us or not. We did some coding following the standard introduction book, looked at some frameworks, and watched the presentation “Considering Rust”. The general conclusion was more or less in the line of: yeah, a nice new programming language, but without a full-grown ecosystem and without any garbage collection, it will be too cumbersome and unproductive for us in our projects. My gut feeling did not agree with the assessment regarding garbage collection. Thus, I did some more digging and testing and came up with my current conclusion: Rust does indeed garbage collection, but in a very clever way.
Continue readingThis blog article is part of a “series of blog articles” about common pitfalls using JPA and ways to avoid them. In this article, we describe the result of EntityManager.persist inside and outside of a transaction.
Continue readingThis blog article is part of a “series of blog articles” about common pitfalls using JPA and ways to avoid them. In this article, we describe a common error when using EntityManager.merge.
Continue readingThis blog article is part of a “series of blog articles” about common pitfalls using JPA and ways to avoid them. In this article, we describe a potential performance problem when loading relationships in a loop.
Continue readingThis blog article is part of a “series of blog articles” about common pitfalls using JPA and ways to avoid them. In this article, we describe a potential problem when filtering in memory instead of DB.
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