willhaben Tech Blog

News from the tech team of @willhaben

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Museum of Willhaben’s Monitoring System (MOWMS)

We at willhaben are very fond of the core principles of site reliability engineering (SRE), which Google developed years ago and which has…

Spring Boot 3.2.x Application using Cassandra With Multiple Keyspaces

Here at willhaben, we use AWS Keyspaces to store some of our data. For one of our services we need to aggregate data from multiple…

Distributed Read Models at willhaben (part 2: Details)

Strategies and guidelines for successfully sharing entity state using Kafka message queues.

How to run the willhaben Android app on a Raspberry Pi

Some months ago, here on the willhaben tech blog, a contest among our engineers was announced: ‘Propose a blog post topic, and the topic…

Kafka Connect Custom Single Message Transform using JSLT

This blog post describes the implementation of a custom Kafka Connect Single Message Transform (SMT). It offers plenty of links to…

How rational assumptions can lead to a crash

Solving a perplexing crash in our android app

What you always wanted to know about willhaben

Vote for one of our blog post ideas and win a willhaben goodie bag

Enforcing Code Structure with ArchUnit

Maintaining long-term code consistency is a well-known challenge in software development. In this article, we explore how to enforce proper…

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