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ksqlDB, the superpower in the Kafka universe - Part 2
Muriel Djanko Kamdoum
News
KsqlDB is an event streaming database for building stream processing applications on top of Apache Kafka. In the previous article, ksqlDB was introduced and the benefits, and reasons for the existence of another solution within the Kafka universe to build stream processing applications were outlined. KsqlDB proposes a different approach to Kafka St...
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ksqlDB: the Superpower in the Kafka universe - Part 1
Muriel Djanko Kamdoum
Data Management
Is there more to Kafka than the usual producer and consumer API? In a previous article, this question was raised to introduce alternative solutions offered by Kafka for designing and building stream processing applications. Streams (Kafka Streams API) rich library was presented as such an alternative to the known producer and consumer. Why the...
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Keeping a secret: MySQL router "bootstrapping" without a "root" account
Matthias Jung
Data Management
Even as an experienced consultant, you don't think about many things until you are faced with them. I have put several InnoDB clusters including MySQL router into operation over the past few years. Up to now, this was always an interactive process where it was no problem to simply enter the passwords of privileged users (at the console). It was cle...
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Pleasing DBAs with small things: Validation of MySQL configuration
Matthias Jung
MySQL (PDO)
Configuration files are a constant source of errors. Especially with older systems (before version 8.0), which did not yet have the possibility to make online persistent changes (e.g. "set global persist…"), there were often minor problems. The parameter was set online (but volatile; i.e. not rebootable) due to a lack of downtime and was written to...
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Import of GeoJSON into Oracle Spatial - no problem with PowerShell
Andreas Jordan
Data Management
The GeoJSON format (https://de.wikipedia.org/wiki/GeoJSON) is a popular exchange format because it is supported by many applications. In addition, the JSON structure makes it easy to read for both humans and machines.With the help of the procedure "sdo_util.from_geojson" provided by Oracle Spatial the format can be converted very easily into the da...
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PowerShell and Oracle – a good team
Andreas Jordan
Data Management
I use PowerShell almost daily to access data in Oracle databases. Why, especially in this combination, I want to present by means of an example. But first there will be a few words about the used technology.  Why PowerShell?  Quite simply: Because it's there. Completely without the installation of additional components, PowerShell is pres...
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