This tutorial builds an event-driven signup flow with Python and Redpanda: creating, updating, and deleting a user become events on a Redpanda Cloud topic instead of direct database writes. You'll write a producer that turns CLI commands into events, a consumer that folds those events into a SQLite table, and a query script that reads that table directly — never touching Redpanda at all. That last piece is where the event-driven mental model actually clicks into place.
In a typical signup flow, one function does everything:
Validates the input.
Writes a row to the database.
Maybe queues a welcome email.
