Ruby on Rails: notes and background exports

You will use Ruby 3.4 and Bundler and build a web app named notes-web plus a worker named notes-worker in the examples Project’s rails Environment.

This is a small Rails API application using Rails routing and controllers. Active Record handles PostgreSQL and MariaDB (the Trilogy adapter); the Mongo Ruby driver handles MongoDB. It deliberately has no asset pipeline or database-backed job framework: the worker chapter shows the Redis queue directly.

Complete Before you start, then follow these chapters in order:

1. Create and deploy hello
2. Persist notes in PostgreSQL
3. Add a Redis export worker
4. Save exports in object storage
5. Try MariaDB or MongoDB instead
6. Prepare for production, or troubleshoot and clean up

Downloads: hello source · complete notes source. The source walkthrough is included directly from those runnable files.