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Architecture

DashLink parcel delivery flows through several operational stages that differ from standard Drive deliveries.

High-Level Flow​

1. Label Creation​

Either:

  • Synchronous — After the merchant submits a Create Delivery or Quote+Accept call
  • Asynchronous — Merchant generates labels in bulk and later uploads shipment data

Tracking code + barcode are printed on a 4×6 label.

Packages leave the merchant facility and travel inbound to a DashLink origin or regional facility.

Facility arrival is recorded via events such as:

  • parcel_origin_arrived
  • parcel_scanned (first scan at a facility)

3. Mid-Mile Processing​

Parcels flow through DashLink sortation centers:

  • parcel_mid_mile_arrived
  • parcel_mid_mile_departed

A parcel may pass through multiple mid-mile nodes depending on geography.

4. Last-Mile Delivery​

A Dasher picks up the parcel:

  • dasher_picked_up
  • dasher_confirmed_dropoff_arrival
  • Terminal events:
    • dasher_dropped_off (delivered)
    • parcel_return_to_merchant (terminal undeliverable)

Error / Exception Flows​

DashLink has built-in support for exception states:

  • parcel_awaiting (missing from merchant truck, etc.)
  • parcel_delayed (driver unassigned, misplaced at sortation center)
  • parcel_lost_in_transit
  • parcel_damaged