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Using feature flags with FF4j, Togglz, and Unleash in Java

Feature flags are now a fixed feature of many projects. In this column we will consider which problems can be resolved with their use. In addition to the theory, we also look at the three Java libraries FF4j, Togglz, and Unleash, with which feature flags can be used in Java.

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Quality Driven Software Architecture - Revised

Quality is the raison d’être for software architects: Our systems should be reliable, performant, scalable and user-friendly. Systems should be build and maintained cost-effective and future-proof. Every IT professional knows that this combination of characteristics means hard work. The article shows how you can methodically construct quality.

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Test organization and naming

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What’s in a name: Legacy

The term “legacy” has a negative connotation in IT, and stands for an old, somehow bad piece of software. In real-life, legacy has a completely different and often positive meaning.

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Test Strategy

In our previous posts, we focused on why and how we write tests. In most of our projects, there will be many of those tests. In the last post about tests granularity, we additionally stated that there usually will be different kinds of tests, on different levels of granularity. That leads to our next topic: which kinds of tests do we need and what is the ideal mix of them?

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Decentralized Architecture: What’s Behind Blockchains?

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What’s in a Name: Quality

We use the word quality colloquially for something “good” – but we usually leave open what exactly we mean by it. This article illustrates that we should be a little more precise in this regard.

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Migrating the iSAQB® Mock Examination to AsciiDoc

The iSAQB(R) provides a mock-examination for the Foundation-Level certification. This post shows how we moved this exam from docx format to AsciiDoc, facilitating collaboration and enabling automated generation of the required multilingual document variants.

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Collaborative Learning with Mobshops

First impressions from an online-first teaching technique using remote mob programming at its core

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The (new) Software Architecture Foundation curriculum

Want to learn Software Architecture? Look no further – the recently released iSAQB Foundation Curriculum covers all your needs!

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iSAQB Advanced Level examination anti-patterns

As the “crowning glory” of the iSAQB(R) Advanced Certification, you have to write an approximately 40-page-long paper (AKA architectural solution) to a given problem. During our 5+ years of experience in reviewing such papers, we found several anti-patterns. This blog post aims to help future CPSA-A aspirants to avoid these nasty glitches.

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Just Add Code
(Part 2)

Using GitHub Catalyst for Progressive Enhancement with Web Components

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Is Domain-driven Design overrated?

Domain-driven design (DDD) is a useful approach that provides excellent guidelines for modeling and building systems, but it is a means to an end, not an end in itself. While the concepts are valid, you lose a lot if you limit yourself to using them only: There actually is a life beyond DDD.

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What tracks do we leave behind with technology?

Bei INNOQ setzen wir uns immer mehr mit KI und Machine Learning auseinander, allerdings mit ihrem sinnvollen Einsatz bei unseren Kunden und Projekten. Beste Voraussetzungen also für einen spannenden Diskurs.

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Just add Code (Part 1)

Using Hotwire Stimulus for Progressive Enhancement with Web Components

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Turning a group of strangers into a team

A testimonial how five foreigners became a team via Remote Mob Programming in less than a day.

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Defect Analysis using pandas

Defect Analysis is a classic analysis technique to get insights into how buggy your system might be. In this blog post, we explore how Defect Analysis works and how we can implement it with a standard data analysis tool from Python: pandas.

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Progressive Enhancement with Hotwire

The definitive renaissance of server-side rendering?

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Remote Mob Programming at INNOQ

At INNOQ, some teams successfully use the methodology Remote Mob Programming in customer projects, some of them even for more than two years. We asked four teams what their experiences with this particular method are and have been.

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Deploying a WebAssembly smart contract on Oasis Ethereum

One of the cornerstones of Ethereum 2.0 is the migration from the “classic” EVM to a WebAssembly-based virtual machine. In this post, I explain how to deploy a compiled WebAssembly contract to the Oasis Ethereum chain.

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Innovation in the web without sacrificing accessibility

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Pragmatic RESTful HAL APIs

The Hypertext Application Language (abbr. HAL) is a media type extension to plain JSON/XML – with its introduction in 2012 – no longer a newcomer and used already in many projects with Hypermedia APIs. A good time then to say a few words of praise, also to show obstacles and what solutions we found in daily work with HAL APIs - for implementing clients as well as for the server side.

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Tests Granularity

In two previous posts we discussed the benefits of automated tests and the properties of a good test. So far we were trying to avoid differentiating the tests in any way. This time we want to address one way how tests can be classified: tests granularity.

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Good arguments for SPA frameworks

When to use an SPA framework and when maybe not

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Anatomy of a Good Test

In our last post, we focused on why we should write tests and what value they provide. This time we will go far more technical and take a look at a single test. We will show what makes a test a good one and describe desired and unwanted properties. Interestingly enough, all those properties hold, no matter how isolated or integrated the test is. This already gives us a hint that all tests are alike, we should remember that. Unfortunately, as the topic is very broad, we will have to skip some aspects that play a role when we’re talking about test suites. We will get back to them in one of our next posts.