Jan's Blog
I'm Jan, software engineer from Hamburg, working on ML in healthcare. This is my blog with mostly dev related posts.
Posts
2025-11-08
sqlx-fmt
A CLI and GitHub Action for formatting SQL within SQLx macros in Rust code.
2025-10-05
Retweet 2 Win
A Twitter Bot for winning giveaways automatically and how it led to wins and regrets.
2025-10-04
Sitcom as a Service
A web app that fills silence in conversations with canned laughter using machine learning.
2025-10-04
Ritmo
A free, open-source, MIT-licensed, minimalistic habit tracker web application built with Rust and Leptos. PWA-ready, offline-first, and privacy-focused.
2025-05-17
InkDay
3D printable frame for a 7.5" e-ink display and a website to control its content.
2025-05-07
Beam Base
3D printable base for DnD miniatures that projects a field of view cone with an adjustable angle.
2025-02-18
Postgres Ultras T-Shirt
A shirt design for Postgres fans.
2025-01-02
SurrealDB
Exploring how to store consistent relational data in SurrealDB, with performance comparisons to Postgres.
2024-02-12
Drawer Inserts
Geometry nodes for procedurally generating 3D printable drawer inserts in Blender.
2024-02-10
BS Bingo
Play bullshit bingo with your friends and colleagues in realtime. No login required. Pick or create a template and play.
2024-01-11
Catenary
Catenary is a web app for chatting with people on the same public transport vehicle.
2022-03-16
Scheduled Postgres Backups to S3
How to achieve recurring uploads of Postgres dumps to AWS S3.
2021-11-25
Postgres Transaction Isolation
About bugs you can avoid with the right transaction isolation level.
2021-10-13
Searchable PDFs
Make all your PDFs searchable.