Is there more to Kafka than the usual producer and consumer APIs? Kafka, the event streaming platform, is usually known for its producer and consumer APIs allowing applications to write, store and retrieve events from the platform in a decoupled way. In the age of ubiquity of compute resource and huge volume of data being generated, it offers the p...

One of our customers uses self-signed certificates for some internal processes. From a technical perspective, they work as expected. Problems arise after about one year, when the certificates expire. Since they are not officially signed, no one watches them to check when they expire. I was wondering if there was a way to set up an easy watch and al...

One key feature of Apache NiFi is scheduling. NiFi dataflows should cover streaming and batch use cases. But how can we connect both worlds together, and what settings are available? In this blog, we want to check the scheduling possibilities and show how to use them correctly. General scheduling options  The dataflow engineer has in total two...

Granting permissions on databases can be a tedious job. Especially assigning restrictive permissions à la "you may read all tables except for the information in database XYZ" was laborious. For such a task, the SELECT rights had to be defined for all databases that the user should be able to read. The unwanted database was simply given no rights. O...

We have already reported several times about the MySQL InnoDB Cluster and the associated components such as the MySQL Shell and the MySQL Router (e.g., https://blog.ordix.de/mysql-shell-cluster-your-application-in-40-minutes). With version 8.0.28 there is another innovation in this "triumvirate". The InnoDB ClusterSets. This allows the DBA to comfo...

A few months ago, Oracle published the new MySQL HeatWave feature for the Oracle Cloud Infrastructure (OCI), which promised to speed up analysis and transactional queries on your MySQL database without big effort. By using so called "HeatWave-Engines" (or "RAPID-Engines") in addition to the original MySQL instance, customers will be able to us...