Buildling a startup's backend in 100 lines of code with Firebase
summary
Prototype for a joke-by-SMS backend uses Firebase Cloud Functions plus Twilio, starts as 100 lines of JavaScript and runs as an app called In Jest. Initial MVP picks from three hard‑coded jokes in ~15 lines, then swaps to Google Sheets, then to Cloud SQL when tens of thousands of rows slow reads. Analytics are decoupled via Pub/Sub into BigQuery. Example costs: 2M hits ≈ $2–3/month, 10M ≈ $22/month. Cold start measured ~2.4s then ~80ms.
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chapters (11)
- 0:00Introduction and setup
- 4:01Building a startup backend
- 7:14Cloud Functions for Firebase
- 9:25First joke service prototype
- 12:01Admin interface with Google Sheets
- 15:44Moving to Cloud SQL database
- 17:30Adding analytics with Pub/Sub
- 23:16Cost and scalability overview
- 25:43Use cases and examples
- 26:07Survey and demo invitation
- 27:37Q&A session
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