Using oracles to test the service and data layer

Getting rid of mocks in your service layer tests and test your database for real

Tracing with cats-tagless and ZIO

Tracing can be a good tool to gain in-depth insights in problems you might have in your application.

A functional ecosystem

At DHL I built a microservice using cats, cats-effect, cats-tagless, refined, doobie, http4s and ZIO

Saga, compensate for failures in a terse and composable way

This blog post is about Sagas, a pattern for managing failures.

Developing a Telegram bot by applying Functional Scala

In this article, I'll explain how I build a Telegram bot by applying Functional Scala. Libraries used are FS2, Circe, Doobie, and Atto

Machine Learning: what can it do for you?

Did you ever question what it can do for you? This is a brief introduction to Machine Learning.

Building a REST/JSON web service using a pure functional programming language

Haskell in production: A REST/JSON web service built with aeson, postgresql-simple, scotty and configurator.