Live session L01 · day 3

Every ingest I write refuses bad data. Here is what that costs

Fail-closed ingest, demonstrated live. One bad row, and nothing partial is written.

Releases Friday, 2 October 2026

What it covers

A pipeline that accepts a row it does not understand has made a decision for you, silently. I feed one a malformed row on camera and let it refuse.

What breaks

Feed it a malformed row. It refuses. Nothing partial is written. Every session breaks something on purpose. A build that only ever works is a demo, and a demo is the one thing this is not.

Afterwards

The recording is posted on this page, and the write-up goes out the same day at designsbyduhart.org/blog.