Shopify Apps

This covers the essential patterns for building modern Shopify apps with React Router, App Bridge for embedded admin experiences, and secure webhook handling with HMAC verification. The sharp edges section is especially useful, steering you away from REST APIs toward GraphQL for new development, warning about webhook response timing (respond immediately, process async), and reminding you about GDPR handler requirements. The anti-patterns call out common mistakes like polling instead of webhooks and processing webhooks before responding. If you're building a Shopify app from scratch or modernizing an existing one, this gives you the architectural guardrails to avoid the most common pitfalls around API choice, embedding, and compliance.