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Harbor

Deliveries

When an event matches a subscription, Harbor creates a delivery. Each delivery is an HTTP request to the destination’s URL with the signed event body. If the destination responds with 2xx, the delivery succeeds. Non-2xx (including network errors) trigger the retry policy. If retries exhaust, the delivery moves to the dead-letter queue.

What to know

Section titled “What to know”
  • One event → many deliveries (one per matching destination).
  • Delivery status transitions: pending → retrying → (succeeded | dead).
  • Each delivery records the response code, response body (first 4 KB), and latency.
  • A delivery can be force-retried manually even after it’s dead.
Section titled “Related”