Request flows

Order flow:

0 User send order request

1 User call order service, Order service deduct products

2 Order Service create order in DB, send a delay message to kafka, delay 10 minutes to consume

3 payment service receive result, call order service, update order status

4 after 10 minutes, consume the cancel event, check order DB status, if it's unpaid or pay failed status, cancel the order.

Payment flow

0 user call api gateway

1 api gateway route request to payment service.

2 Payment service call 3rd sdk(stripe, paypal, visa)

3 3rd sdk call payment service, return payment result

4 payment service receive result, call order service, update order status