Auth + Database + API: Architecture
Plan the layer architecture of a full-stack SvelteKit app before writing code.
Auth + Database + API: Architecture is a free Sveltejs Academy lesson on CoddyKit — lesson 1 of 4. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Sveltejs Academy learning path, one of 4 lessons in the course, and your progress syncs across the web and the CoddyKit app.
Plan First
Before coding, sketch the major layers: auth, database, API endpoints, UI.
Auth Layer
Choose session-based or JWT auth. Wire into hooks for centralized protection.
Database Layer
Pick a Postgres/MySQL with an ORM (Drizzle, Prisma) for type safety.
API Surface
Decide what runs as form actions, server endpoints, or universal load.
Folder Structure
Common pattern: $lib/server/db, $lib/server/auth, $lib/server/services.
Layered Responsibilities
Routes call services; services call models; models call the DB.
Type Safety
End-to-end types from DB to UI prevent runtime errors.
Migrations
Set up migrations from day one to evolve the schema safely.
Validation
Use Zod or Valibot to validate inputs at API boundaries.
Testing
Plan integration tests against a test DB seeded with deterministic data.
Deployment
Choose an adapter (node, vercel, cloudflare) compatible with your DB driver.
Quick Check
Why centralize auth in hooks?
Recap
Plan layered architecture: auth in hooks, DB via ORM, services in $lib/server, with validation at boundaries.
Frequently asked questions
Is the “Auth + Database + API: Architecture” lesson free?
Yes — the full text of “Auth + Database + API: Architecture” is free to read here on the web, and the Sveltejs Academy course includes 4 lessons in total. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Sveltejs Academy course, upgrade to CoddyKit PRO.
What will I learn in “Auth + Database + API: Architecture”?
Plan the layer architecture of a full-stack SvelteKit app before writing code. You practise Sveltejs Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Sveltejs Academy?
No prior experience is required. Sveltejs Academy on CoddyKit is structured for beginners through advanced learners; this is — lesson 1 of 4, so you can start here or from the beginning and move at your own pace.
How long does the “Auth + Database + API: Architecture” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Sveltejs Academy lesson?
Yes. Every Sveltejs Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- Auth + Database + API: Architecture
- Drizzle ORM with SvelteKit
- Deploying to Vercel with a Database
- End-to-End Type Safety with tRPC