How we build and operate the Keboola data platform
Ondřej Hlaváček

Ondřej Hlaváček

Ondřej Hlaváček 3 min read

Dogfooding: Papertrail, Snowflake and JSON logs

We're piping a lot of logs into Papertrail. From server logs to application events, everything goes there. The speed, powerful search and…

Ondřej Hlaváček 2 min read

Parallel Multipart Uploads to S3 in PHP

Being a Keboola Connection developer has some benefits. Due to it's async/batch nature I don't have to worry about milliseconds or dive…

Ondřej Hlaváček 3 min read

Querying JSON Ad-hoc in Snowflake

Sometimes I end up with a serialized JSON stored in a relational database (or in a CSV file). It often contains data structures that are…

Ondřej Hlaváček 2 min read

OpenRefine PHP Client

A week or two ago I started playing with OpenRefine and its integration with Keboola Connection. Couple years ago I remember playing with…

Ondřej Hlaváček 3 min read

Parsing JSON in Papertrail

From a bookmarklet to Chrome Web Store