Stripe Webhook Idempotency & Failed Payment Retries

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📱 160-Char Client Mobile Viewport 156 / 160 chars used

"Hi Elena, saw your Stripe webhook sync errors—I implemented Redis idempotency locks that resolved duplicate invoice charges for a platform billing $140k/month."

Why it works: Addresses a high-risk financial headache (duplicate charges) with an authoritative engineering pattern (Redis idempotency).

Full Proven Proposal Cover Letter

Hi Elena,

Saw your issue with Stripe webhook retries causing duplicate subscriptions and inconsistent database state. In August, I redesigned the payment webhook ingest engine for a marketplace handling $140k/month in Stripe volume.

Here is how I will permanently fix it:
1. Redis distributed idempotency keys based on `event.id` to prevent concurrent execution.
2. Dead letter queues (DLQ) in BullMQ to safely retry transient database failures.
3. Automated reconciliation cron that verifies webhook state against Stripe API hourly.

Available to review your repo and deploy the fix within 24 hours.

Best,
[Your Name]

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