Overview

The Checkout Orchestrator is the brain of the Checkout System. Once the Checkout APICheckout APIService•v1.0.0The entry point to the Checkout System. Receives the checkout command from the Shopping domain and starts the checkout f...Subscribescheckout-cartOwnerordering-platformMapRepoView docs hands it a checkout, it runs the checkout saga step by step:

1. Reserve inventory — sends Reserve InventoryReserve InventoryCommand•v1.0.0Command to reserve stock for the items in a checked-out cart. Ownerordering-platformSchemaMapView docs to hold stock for the cart’s items.
2. Authorize payment — sends Authorize PaymentAuthorize PaymentCommand•v1.0.0Command to authorize payment for the total of a checked-out cart. Ownerordering-platformSchemaMapView docs to authorize the order total.
3. Create the order — sends Create OrderCreate OrderCommand•v1.0.0Command to create a new order from a checked-out cart. Ownerordering-platformSchemaMapView docs to the Order Management SystemOrder Management SystemSystem•v1.0.0Internal system that is the source of truth for orders. It creates orders, tracks their lifecycle, and publishes events ...Ownerordering-platformMapView docs.

If any step fails, the orchestrator compensates the earlier steps (releasing the reservation, voiding the authorization) so the customer is never left in an inconsistent state.

Sends 3 messages

Reserve inventory, authorize payment, create order

Responsibilities

Area	Description
Inventory	Reserves stock via Reserve InventoryReserve InventoryCommand•v1.0.0Command to reserve stock for the items in a checked-out cart. Ownerordering-platformSchemaMapView docs.
Payment	Authorizes the order total via Authorize PaymentAuthorize PaymentCommand•v1.0.0Command to authorize payment for the total of a checked-out cart. Ownerordering-platformSchemaMapView docs.
Order creation	Creates the order via Create OrderCreate OrderCommand•v1.0.0Command to create a new order from a checked-out cart. Ownerordering-platformSchemaMapView docs against the Order Management SystemOrder Management SystemSystem•v1.0.0Internal system that is the source of truth for orders. It creates orders, tracks their lifecycle, and publishes events ...Ownerordering-platformMapView docs.
Compensation	Rolls back earlier steps if a later step fails.

Architecture diagram

Messages for this service

Sends messages (3)

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Commands (3)

Name	Version	Type	Summary
Reserve Inventory	v1.0.0	command	Command to reserve stock for the items in a checked-out cart.
Authorize Payment	v1.0.0	command	Command to authorize payment for the total of a checked-out cart.
Create Order	v1.0.0	command	Command to create a new order from a checked-out cart.

Receives messages (0)

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Name	Version	Type	Summary
No messages found