The Peptide Journey
Research-grade peptide storefront with guest checkout, atomic inventory reservations, provider-agnostic payments, and a cream / forest-green brand UI.
Details
The Journey
Overview
A production-ready peptide commerce platform built with Next.js 16, TypeScript, and MongoDB. Includes guest checkout, atomic inventory reservations, provider-agnostic payments with verified webhooks, and an admin suite — all without a separate backend server.
The product surface spans a marketing site (protocols, quality, about), a MongoDB-backed shop, cart/checkout, account area, admin dashboard, and a Figma-driven launch giveaway with scroll-linked bottle motion. Brand UI follows a cream (#F5F0E8) and forest-green (#1A4A2E) design system.
Business logic lives in-process via Server Actions, feature services, and MongoDB transactions — vertical slices under features, with thin actions that Zod-parse and call a single service.
Overview
A production-ready peptide commerce platform built with Next.js 16, TypeScript, and MongoDB. Includes guest checkout, atomic inventory reservations, provider-agnostic payments with verified webhooks, and an admin suite — all without a separate backend server.
The product surface spans a marketing site (protocols, quality, about), a MongoDB-backed shop, cart/checkout, account area, admin dashboard, and a Figma-driven launch giveaway with scroll-linked bottle motion. Brand UI follows a cream (#F5F0E8) and forest-green (#1A4A2E) design system.
Business logic lives in-process via Server Actions, feature services, and MongoDB transactions — vertical slices under features, with thin actions that Zod-parse and call a single service.
The Challenge
A UK research-peptide store needed oversell-safe inventory, guest checkout without forced accounts, and payment truth that never trusts redirects — while keeping marketing protocols separate from live purchasable catalog stock.
The Challenge
A UK research-peptide store needed oversell-safe inventory, guest checkout without forced accounts, and payment truth that never trusts redirects — while keeping marketing protocols separate from live purchasable catalog stock.
Key Highlights
- 1Guest + authenticated carts (MongoDB httpOnly cookie) with merge-on-login — no localStorage
- 2Per-SKU inventory with reserved stock, checkout-time holds, and TTL sweeper for expired reservations
- 3Provider-agnostic payments; paid status only via HMAC-verified webhooks
- 4Admin suite for products, inventory, orders, customers, and analytics with audit logging
- 5Cloudflare R2 storage abstraction and transactional email via Nodemailer
- 6Giveaway page with CSS hero entrance and separate Lenis scroll-linked bottle floater
Key Highlights
- 1Guest + authenticated carts (MongoDB httpOnly cookie) with merge-on-login — no localStorage
- 2Per-SKU inventory with reserved stock, checkout-time holds, and TTL sweeper for expired reservations
- 3Provider-agnostic payments; paid status only via HMAC-verified webhooks
- 4Admin suite for products, inventory, orders, customers, and analytics with audit logging
- 5Cloudflare R2 storage abstraction and transactional email via Nodemailer
- 6Giveaway page with CSS hero entrance and separate Lenis scroll-linked bottle floater
The Approach
Modeled inventory as available = onHand − reserved with multi-document MongoDB transactions at checkout; persisted guest carts server-side; introduced a PaymentProvider seam so only verified webhooks mark orders paid; kept marketing protocol data static and live catalog rows for cart/checkout.
The Approach
Modeled inventory as available = onHand − reserved with multi-document MongoDB transactions at checkout; persisted guest carts server-side; introduced a PaymentProvider seam so only verified webhooks mark orders paid; kept marketing protocol data static and live catalog rows for cart/checkout.
The Outcome
A production-ready Next.js commerce platform with guest checkout end-to-end, concurrency-safe money/inventory mutations, admin ops, and a cohesive cream / forest-green brand experience including a Figma-driven giveaway.
The Outcome
A production-ready Next.js commerce platform with guest checkout end-to-end, concurrency-safe money/inventory mutations, admin ops, and a cohesive cream / forest-green brand experience including a Figma-driven giveaway.
More work
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