Monitoring Your Product

Part of the Vibe Coding: Prototype to Production course

Your product is live now. Real people can reach it, which means real things can go wrong when you are not watching. The worst way to learn that your product is broken is a stranger emailing you to say so, hours after it happened. This lesson is about the opposite: setting up ways for your product to tell you what it is doing, so you find out about trouble before your users do.

A log is a running diary your product writes about what it did, one line at a time, as it happens. Someone signed up, a page loaded, a payment went through, an error appeared: each becomes a line with a timestamp. You do not read logs for fun. You read them when something goes wrong and you need to know what happened just before it broke. ...