Development Log

This section documents the chronological build process of Mountify, from initial MVP to production-ready platform.

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Version Timeline

Version	Focus	Status
1.0	Foundation (API, routing, cart)	✅ Complete
2.0	Database & Stripe	✅ Complete
3.0	UI/UX & Security	✅ Complete
4.0	Auth & Redis	✅ MVP
5.0	Admin & Features	✅ Complete
6.0	Shipping Integration	✅ Complete

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MVP Milestone

Version 4.0 marks the Minimal Viable Product:

• ✅ User authentication
• ✅ Database-backed products
• ✅ Stripe payments
• ✅ Order history

Everything after is enhancement.

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Architecture Evolution

v1: Hardcoded JSON → React State
              ↓
v2: PostgreSQL → API → Stripe → Webhooks
              ↓
v3: Design System → Price Validation
              ↓
v4: NextAuth → Redis Cache → Rate Limiting  ← MVP
              ↓
v5: Admin Panel → OAuth → Search → Email
              ↓
v6: 17track → Shipping Notifications

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Quick Links

Core Concepts

• v1: API Routes & Dynamic Routing
• v1: Cart Context
• v2: Database Connection
• v2: Stripe Webhooks

Security

• v3: Price Validation
• v4: JWT Authentication
• v4: Rate Limiting
• v5: Password Reset

Performance

• v4: Redis Caching
• v6: Progressive Polling

Features

• v5: Admin Panel
• v5: Google OAuth
• v5: Inventory Management
• v6: Shipping Tracking

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Tech Stack Evolution

Version	Added
v1	Next.js, React, TypeScript
v2	PostgreSQL (Neon), Stripe
v3	Tailwind CSS, CSS Variables
v4	NextAuth, bcrypt, Redis (Upstash)
v5	Cloudinary, Resend, Google OAuth
v6	17track API

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Lessons Learned

1. Start Simple, Iterate

v1 was hardcoded JSON. By v6, it's a production platform. Each version added one concept at a time.

2. Security is Iterative

v2 had price manipulation vulnerability. v3 fixed it. Always audit previous assumptions.

3. User Experience Drives Architecture

Progressive polling in v6 wasn't technically elegant, but it achieved 95% success rate. UX wins.

4. Cache Invalidation is Hard

Decided on TTL-based expiration + explicit invalidation on admin actions. Simple but effective.

5. Idempotency is Essential

Webhooks can fire multiple times. Every state change uses flags or conditional updates.