Testing of Microservices

Why do we write tests? Most people would say that we write tests to verify that things work as we expect them to. While that is true, it’s not the whole truth. After all, that can be verified through manual tests as well. So there has to be something more to it. Anyone who has […]



Spotify Retro Kit

TL;DR: We have created the Retro Kit. It can be downloaded by following this link. Retro Kit… but why? Historically at Spotify there has been an Agile Coach attached to each team. That coach has, among other things, helped the team to improve their processes. A central piece to that improvement are regular retrospectives where […]




Autoscaling Pub/Sub Consumers

Spotify’s Event Delivery system is responsible for delivering hundreds of billions of events every day. Most of the events are generated as a response to a user action, such as playing a song, following an artist or clicking on an ad. All in all, more than 300 different types of events are being collected from […]


Big Data Processing at Spotify: The Road to Scio (Part 2)

In this part we’ll take a closer look at Scio, including basic concepts, its unique features, and concrete use cases here at Spotify. Basic Concepts Scio is a Scala API for Apache Beam and Google Cloud Dataflow. It was designed as a thin wrapper on top of Beam’s Java SDK, while offering an easy way […]


TC4D: Data Quality By Engineers, For Engineers

Changing an engineering culture is one of the biggest challenges for any organization. It requires challenging an existing way of working, and introducing compelling improvements that are adopted by individuals as well as the departments. Tackling tech debt instead of amassing it, using new tooling and infrastructure, or in this case, increasing test coverage. After […]


Big Data Processing at Spotify: The Road to Scio (Part 1)

This is the first part of a 2 part blog series. In this series we will talk about Scio, a Scala API for Apache Beam and Google Cloud Dataflow, and how we built the majority of our new data pipelines on Google Cloud with Scio. Scio > Ecclesiastical Latin IPA: /ˈʃi.o/, [ˈʃiː.o], [ˈʃi.i̯o] > Verb: […]


Stepping Up the Cloud Security Game

TL;DR: securing our Cloud infrastructure is incredibly important. We are now taking another step forward by leveraging open source tools we developed in partnership with Google. Spotify engineering teams are fully embracing the devops culture: to increase development speed every dev team is responsible for their operational pipelines. From a security perspective we are continuously […]