Software Engineering Blog

Tipps und Tricks aus dem Leben eines Informatikers.

Letzte Blog Posts

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As SSDs are getting cheaper, low HDD / SSD ratios of 10/1 or better become an option. This article describes how to tune bcache for this scenario from an empirical perspective.

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This article is about how to use the great mailcow software behind a reverse-proxy with public certificates from the Let's Encrypt CA.

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Running software (single instance) in a multi-node cluster might reduce downtimes due to planned maintenance, as the VM can be live-migrated to another node prior to that. This in fact increases the availability of the instance. However this only holds for planned events.

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This tutorial focuses on how to speed up random accesses on a disk array using a spare SSD and bcache. As filesystem on top of the cache, BTRFS is chosen.

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Rsync ist ein sehr praktisches Kommandozeilen Werkzeug zum Kopieren von Daten. Leider ist die Performance jedoch nicht immer optimal. Hier zeige ich ein paar Möglichkeiten, die maximale Kopiergeschwindigkeit zu erreichen.