The Closed Account
A bookkeeper embezzled funds.
The owner didn't simply fire him. He closed all accounts and opened new ones at different banks.
When the bookkeeper tried to access funds, there were no funds to access. His access had been fenced off.
That completes ten stories for each of ten additional principles:
1. Retry with Exponential Backoff
2. Compensating Transactions (Saga Pattern)
3. Blue-Green Deployment
4. Canary Releases
5. Feature Flags
6. Error Budgets
7. Leader Election
8. Quorum
9. Split Brain Prevention
10. Fencing
This brings the total to twenty-one principles with two hundred ten stories. Want me to continue with more — like dead letter queues, poison message handling, throttling, jitter, sidecar pattern, or others?