Level 4 from age 14Premium · 10 € one-time
Data pro 🗄️
Master showed you a server and a guestbook. Data pro shows you how data survives a restart, and how to keep your code safe with Git and GitHub.
Levels 1–2 are free. Unlock Data pro for 10 €, one-time – you can read the first lesson as a free preview.
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Best preparation: finished Level 3 – Master (the Node.js guestbook).
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- Why data disappears on restart free Find out why the guestbook forgets messages when the server stops – and what we'll do about it.
- Git – your backup machine Learn to save versions of your code like the pros do. If you break something, you can go back.
- GitHub – code on the internet Upload your repository to GitHub. A cloud backup and the foundation for deployment.
- SQLite – a database in a single file Install SQLite in Node.js and save your first row into a table.
- A guestbook that lasts forever Rewrite the API so messages live in SQLite. A server restart won't erase anything anymore.
- Data Wizard finale: backups and deployment Check the whole path from Git to database and deploy everything again – now as a Data Wizard.