Duplicate delivery

  • Fix
  • Level 20 of 41
  • Queue

Difficulty 1 of 5

A payment consumer receives the same accepted job more than once after an acknowledgment is lost. Complete the payment once and keep duplicate effects at zero.

0:15. A customer was charged twice for one payment. Graph: charges per order step to 2 after a lost acknowledgment.

Play level

AMQPHTTP/2Users0 req/sMessage bro…1 vCPU · 1 GBPayment pro…2 vCPU · 2 GB
AMQPHTTP/2Users0 req/sMessage bro…1 vCPU · 1 GBPayment pro…2 vCPU · 2 GB
The board at the start of the level
Delivered twice, charged onceTap to turn the ID check on or off

13 deliveries · 10 payments applied · 0 charged twice

Goals and limits

Duplicates
none
Completion time
under 40 s
Lost writes
none
Monthly cost
under 500 USD/mo
Parts you can add
Payment provider
Part limit
16
Edit limit
3

Concepts

How players did

Player results load from the server.

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