Retries and backoff

Pivotal retries failed deliveries for 24 hours with exponential backoff. After the final retry, the endpoint is marked unhealthy and we email the workspace owner. The full delivery log lives in the dashboard with one-click replay.

• Any 2xx response inside the 10-second window.

• Non-2xx response (4xx and 5xx alike).
• Connection refused, DNS failure, TLS handshake failure.
• Timeout: no response inside 10 seconds.

After attempt 8, Pivotal:

1. Marks the delivery as failed in the dashboard.
2. Increments the endpoint’s failure counter.
3. Disables the endpoint if it has crossed 100 consecutive failures.
4. Emails the workspace owner with a link to the delivery log.

You can re-fire any past delivery from the dashboard — payload and headers are identical to the original. The Svix SDK treats replays as new deliveries with the same event.id, so your idempotent handler keeps you safe.