The original title is: "The production webhook checklist every tutorial skips (with a TypeScript example)"

Short summary

Production webhooks require signature verification, idempotency handling, proper HTTP status codes, structured logging, and stable deployment infrastructure. This checklist covers critical patterns for payment processing with a complete TypeScript example using Stripe and fan-out architecture for non-blocking operations.

• •Verify webhook signatures before processing and design idempotent handlers to safely handle retries
• •Separate critical path (state changes) from fan-out (notifications) to prevent cascading failures
• •Use structured logging, stable public URLs, and secret management for production webhook operation

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