Jan's Blog

I’m Jan, software engineer from Hamburg, working on ML in healthcare. This is my blog with mostly dev related posts.

Beam Base

3D printable base for DnD miniatures that projects a field of view cone with an adjustable angle.

2025-05-07

Postgres Ultras T-Shirt

A shirt design for Postgres fans

2025-02-18

SurrealDB

Exploring how to store consistent relational data in SurrealDB, with performance comparisons to Postgres.

2025-01-02

Drawer Inserts

Geometry nodes for procedurally generating 3D printable drawer inserts in Blender.

2024-02-12

BS Bingo

Play bullshit bingo with your friends and colleagues in realtime. No login required. Pick or create a template and play.

2024-02-10

Catenary

Catenary is a web app for chatting with people on the same public transport vehicle.

2024-01-11

Scheduled Postgres Backups to S3

How to achieve recurring uploads of Postgres dumps to AWS S3.

2022-03-16

Postgres Transaction Isolation

About bugs you can avoid with the right transaction isolation level.

2021-11-25

Searchable PDFs

How to use tesseract and pdfgrep to make all your PDFs searchable.

2021-10-13