Live session L08 · day 45

I found 952 messages that had been read but never acknowledged

Kafka and Redis set up from scratch, and a leak that had been growing quietly the whole time.

Releases Friday, 13 November 2026

What it covers

Setting both up live, and then looking at the pending entries list on a stream I had been running for months. There were 952 messages read but never acknowledged, growing slowly, with nothing anywhere reporting a problem.

What breaks

And the 952 messages found undead in a pending-entries list. 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.