Stop Setting Up Databases for Things That Just Need to Remember Stuff

You're 45 minutes into building something fun with Cursor or Claude. The app is taking shape. Then your data needs to exist somewhere between page refreshes. And your brain immediately goes: do I really have to set up a database for this? You don't. The infrastructure trap Setting up persistence used to mean one of these: Spin up a Postgres instance Configure a Firebase project Set up S3 or Blob storage Pay for a managed DB you'll forget about next month For a quick prototype, a weekend hack, or