Launch Checklist

Before you start

This checklist assumes you've completed the previous 9 lessons. Each item connects back to skills you've already learned. If anything feels unfamiliar, revisit the lesson where it was covered.

Jargon cheat sheet:

• RLS (Row Level Security) — database rules that control who can read/write each row. Like a bouncer for your data.
• CORS (Cross-Origin Resource Sharing) — browser security that controls which websites can call your API. Prevents strangers from using your backend.
• Tree-shaking — automatically removing unused code from your final bundle, so users download less JavaScript.
• Cache-Control — an HTTP header that tells browsers how long to keep a copy of a file before re-downloading it.
• Indexes — a database optimization (like a book's index) that makes lookups fast instead of scanning every row.