---
title: "Delivery capacity limits"
description: "Cap orders per date and per slot. Booking is atomic — no overbooking — and a cancellation releases the slot automatically."
contentType: "docs"
locale: "en"
localized: true
source: "https://orderrules.com/docs/delivery/capacity-limits"
slug: "delivery/capacity-limits"
---
**Capacity limits stop you overbooking days you can't fulfill.** They're the delivery side of the same idea as OrderRules' order caps.

- **Per-date and per-slot caps.** Limit how many orders each delivery date — and each time slot within it — can take.
- **Atomic booking.** Two shoppers can't grab the last slot at once; booking is atomic, so there's **no overbooking**.
- **Auto-release on cancel.** When an order is cancelled, its slot is released and becomes bookable again.
- **Optional "slots left" display.** Show shoppers how many places remain to nudge urgency.

Caps are enforced at checkout by the OrderRules Shopify Function, so back-door checkout paths can't exceed them.

## Related

- [Time slots](/docs/delivery/time-slots) · [Availability rules](/docs/delivery/availability-rules) · [Blackout dates & holidays](/docs/delivery/blackout-dates-and-holidays)