Stripe Webhook Idempotency Pattern: One-Page Production Guide
A self-contained pattern for retry-safe Stripe webhook handling with Postgres idempotency.
Tweetable Definition#
Webhook reliability equals signature verification plus idempotency plus transactional updates.
Production Risk Warning#
Ignoring retries creates duplicate subscriptions and access drift.
Copy-Ready Snippet#
create table if not exists billing_webhook_events (
event_id text primary key,
received_at timestamptz not null default now()
);
One-Page Pattern#
- Verify signature from raw body.
- Start transaction.
- Insert
event_idinto idempotency table. - If conflict: stop and return success.
- Apply billing state mutation.
- Commit and log outcome.
Common Pitfall#
Never treat webhook retries as errors; treat them as a normal delivery guarantee.
Related Incidents#
Related Assets#
One email a month — no fluff
RLS gotchas, Next.js cache debugging, and the one Supabase setting that bit me last month.
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