10.24Practical integration mindset

Most real message systems often force you to reason as if:

duplicate delivery is possible

Therefore:

consumer must be idempotent

This should sound familiar by now.

Example event:

{
  "eventId": "EVT-123",
  "customerId": "C001"
}

Mule might store/process:

EVT-123

only once.

Or Salesforce upsert by stable business key.