Design a simple greeting-card web app

Q: Design a simple greeting-card web app

This question evaluates a candidate's ability to design a minimal web application architecture for an MVP greeting-card service, covering frontend/backend/database trade-offs, data modeling, API design, authentication/authorization, and basic operational concerns.

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Question

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Design a web application for creating and viewing text-only greeting cards with an emphasis on shipping quickly (MVP).

Core user stories

A user can create a new greeting card containing text only .
A user can view a list of greeting cards they created .
A user can view a specific card they created .

Constraints / non-goals

No images, templates, payments, or social features required.
Focus on an MVP architecture that can be launched fast, but explain how it can scale if traffic grows.

What to cover

High-level architecture (frontend, backend, database)
Data model
API design
Authentication/authorization approach (minimal but sufficient to support “my cards”)
Basic operational concerns (deployment, monitoring, security)

Design a simple greeting-card web app

Quick Overview

Core user stories

Constraints / non-goals

What to cover

Solution

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