Next.jsFastifyTypeScriptSupabaseRedisRazorpay
E-Commerce Platform
A production-grade e-commerce platform built with Next.js, Fastify, and Supabase. Features real-time cart sync, Razorpay payment gateway, optimistic UI updates, and a robust admin dashboard.
E
The Challenge
Building a resilient checkout flow that handles partial failures gracefully—payment success but order creation failure—required careful state management and idempotent API design.
The Solution
Implemented a saga-like pattern using Redis for distributed transaction state, with background jobs to reconcile inconsistencies. Used Promise.allSettled for parallel data fetching with per-section error states on the frontend.
Key Outcomes
- Sub-200ms API response times via Fastify
- 99.9% payment success rate with retry logic
- Fully typed end-to-end with TypeScript
- RLS policies for row-level Supabase security