Senior freelance software architect & engineer. Java, Spring Boot, AWS. iSAQB certified. Based in Hamburg — available for new projects.

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PostgreSQL format decimal separator from point to comma

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How to change the decimal separator without changing the representation in the Postgres database

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How to stop Spring MVC from exposing @ModelAttribute parameters in redirect query strings by adjusting settings.

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How to connect to Liferay’s embedded Hypersonic DB (jdbc:hsqldb:file:…;readonly=true) to inspect data.

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Tweak Apple Bitpool settings and restart bluetoothaudiod to reduce choppy Bluetooth audio on Mac.

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Step-by-step commands to upgrade PostgreSQL clusters between versions on Ubuntu.