Introduction Apache Spark has come a long way since its inception in 2014, originally envisioned as a more generic model to work with data than the previous concept of Map & Reduce. It has been widely adopted since then and … Read More
Author Archives: Sönke Liebau
Benchmarking Apache HBase on Kubernetes
TL;DR In this blog post, I describe a benchmarking exercise we conducted to compare the performance impact of running HBase and HDFS on Kubernetes versus running them on bare-metal. The blog post explains the challenges of running stateful workloads on … Read More
The Stackable Security Story
Both Lars and I have always had a special place in our heart for security throughout our consulting careers. It might have to do with being German, but most probably it was simply caused by being burned too often by … Read More
Log4Shell and how we mitigate it
Some Background It has been a while since the last high profile vulnerabilities like Heartbleed or the Rowhammer family have been published. But last Friday saw another exploit make international headlines: CVE-2021-44228 or, as it is more commonly known: Log4Shell. … Read More