How we build and operate the Keboola data platform
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Vladimír Kriška
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5 min read
How we converted CoffeeScript files with about 220 React components to JavaScript
On June 11, 2018 I created a new issue Rewrite from CoffeeScript to JS/JSX to get rid of CoffeeScript in our biggest repository for Keboola Connection UI .
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Ondřej Hlaváček
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2 min read
Revisited: Parallel Multipart Uploads to S3 in PHP
It's been exactly two years since I shared how we were handling large uploads to S3. Since then the code had worked without any…
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Ondřej Popelka
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13 min read
Testing the untestable
An important part of Keboola Connection are Extractors — especially Database Extractors. These components load data from different (SQL)…
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Ondřej Hlaváček
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3 min read
cp in Docker: Cannot allocate memory
Once in a while we encounter a simple cp or gzip command in Docker with a mysterious Cannot allocate memory error. Sometimes the error is…
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Ondřej Popelka
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3 min read
The Downfall of Exception
Some time ago I came across a weird situation. I had a piece of PHP code which behaved really strange. Since the actual code was a rather…
