CheckoutHub

CheckoutHub is a high-volume checkout control plane for subscription offers, upsells, and gateway failover across Shopify and BigCommerce storefronts — with idempotent webhooks and Redis rate limiting.

Features

• Idempotent webhooks
• Gateway failover
• Redis rate limiting

Architecture

• Services. Laravel + Node.js workers
• Cache. Redis rate limits + locks
• Data. MySQL orders and gateway events
• Integrations. Shopify + BigCommerce

Challenges

• Idempotent payment capture under duplicate webhooks
• Safe gateway failover without double-charging
• Rate limiting under burst campaign traffic

Metrics

• Webhooks. Idempotent
• Failover. Multi-gateway
• Limits. Redis

Results

• Reliable high-volume checkout orchestration
• Gateway failover without double capture
• Redis-backed rate limiting