Java: Simulating various connection problems with Toxiproxy

Simulate various connection problems with Toxiproxy and Java’s HttpURLConnection to see what kind of errors get produced: connect timed out vs. read timed out…

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Clojure – comparison of gnuplot, Incanter, oz/vega-lite for plotting usage data

What is the best way to plot memory and CPU usage data (mainly) in Clojure? I will compare gnuplot, Incanter…

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An answer to CircleCI’s Why we’re no longer using Core.typed

CircleCI has recently published a very useful post “Why we’re no longer using Core.typed” that raises some important concerns w.r.t. Typed…

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Shipping a Refactoring & Feature One Tiny Slice at a Time, to Reduce Risk

You don’t need to finish a feature and your users don’t need to see it to be able to release…

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There will be failures – On systems that live through difficulties instead of turning them into a catastrophy

Our systems always depend on other systems and services and thus may and will be subject to failures – network…

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Challenging Myself With Coplien’s Why Most Unit Testing is Waste

James O. Coplien has written in 2014 the thought-provoking essay Why Most Unit Testing is Waste and further elaborates the topic…

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Tiny, Tiny Steps – Experience Report Developing A Feature In Minimal Value-Adding Increments

A post for those who want to see what an iterative, MVP-driven development of a feature looks like. Once upon…

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Clojure: How To Prevent “Expected Map, Got Vector” And Similar Errors

What my Clojure code is doing most of the time is transforming data. Yet I cannot see the shape of…

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Frustration-Driven Development – Towards DevOps, Lean, Clojure

My wife has mentioned that she likes my passion for doing things right in software development. That made me thinking,…

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