Solution
Fan out order events to fulfillment, accounting, and analytics
A new order needs to reach fulfillment, get logged for accounting, and show up in analytics — often in that order, often all at once. API Rabbits handles the fan-out so your storefront only has to make one call.
The scenario
Your storefront or checkout flow creates an order and needs several systems to know about it: a fulfillment partner needs to ship it, your accounting tool needs the line items, and your analytics stack needs the event for reporting. A rabbit accepts the order event once and delivers it to each system on its own schedule.
Example routing rule
Only notify the fulfillment partner and post to Slack when "total_cents" is above a threshold; log every order to accounting regardless of size.
POST /v1/p/orders-example
{
"order_id": "ord_4471",
"customer_email": "casey@example.com",
"total_cents": 8900,
"items": [{ "sku": "TSHIRT-BLK-M", "qty": 1 }]
}Fans out to:
- Custom HTTP — Notify a fulfillment or warehouse system to ship the order.
- Generic Webhook — Log line items into an accounting or spreadsheet backend.
- Slack — Post large or notable orders to a sales channel.
Fulfillment delays never block your storefront
If a fulfillment API is slow or briefly unavailable, retries happen in the background — your checkout flow already returned a response to the customer.
Add a destination without touching checkout code
Bringing on a new fulfillment partner or adding a reporting tool is a matter of configuring a new destination, not modifying your order pipeline.
A complete, replayable order trail
Every order event and its delivery outcomes are recorded, so a failed delivery to one system can be inspected and replayed without resending the whole order flow.