프로토타입에서 제품으로

A vibe-coded prototype proves an idea works. A product survives real users, real load, and real failure. The gap between them is mostly the parts you skipped to move fast.

In this lesson you will use your AI assistant to systematically close that gap: hardening, configuration, persistence, and deployment that holds up.

Before changing anything, get an inventory. Ask the assistant to audit your codebase for the shortcuts that are fine in a demo but dangerous in production.

A good audit names specifics: hardcoded secrets, missing error handling, synchronous calls that should be queued, and absent input validation.

Demos hardcode everything. Products read configuration from the environment so the same build runs in dev, staging, and production untouched.

Have the assistant extract every literal into typed config with validation at startup, so a missing variable fails loudly instead of silently at 3 a.m.

In a prototype an unhandled exception just crashes the tab. In production it can take down a worker, leak a stack trace, or corrupt a half-written record.

Ask for consistent error handling: typed errors, graceful degradation, and responses that never expose internals to the user.

An in-memory array or a local SQLite file is great for vibing and gone the moment you restart. Real users expect their data to persist and to survive a deploy.

Move to a managed database, add migrations, and make sure writes are transactional where they matter.

Running the app from your laptop is not a deploy. A product needs a reproducible pipeline: install, test, build, and ship without manual steps.

Let the assistant scaffold CI so every push runs your checks and only green builds reach production.

Orchestrators and load balancers need to know if your app is alive and ready to take traffic. Without endpoints to ask, they route requests into a process that is still booting.

Add a lightweight liveness check and a readiness check that confirms dependencies like the database are reachable.

A prototype often runs wide open. A product enforces who can do what, rate-limits abuse, and sets security headers by default.

Ask for an authentication layer, sensible rate limits, and a checklist of the headers and CORS rules that should ship on day one.

You moved fast without tests. Now lock in behavior before you start refactoring for scale, so regressions are caught by machines, not customers.

Prioritize tests around money, auth, and data integrity first; coverage everywhere else can grow over time.

Promote changes through environments. A staging deploy that mirrors production catches the bugs that only appear with real config and real data shapes.

Have the assistant define environments, secrets management, and a rollback path so a bad release is a button press away, not a panic.

"Production-ready" is vague until it is a checklist. Turn the work above into an explicit gate you can sign off against.

Items like backups verified, alerts wired, secrets rotated, and a rollback rehearsed separate a real launch from a hopeful one.

Test your understanding of moving from prototype to product.

Closing the prototype-to-product gap is deliberate work: audit the debt, externalize config, harden errors, make data durable, and ship through a real pipeline with health checks, security, tests, and rollback.

Drive each step with specific prompts and a launch checklist, and your vibe-coded idea becomes something you can run with confidence.