graph LR A[Start] --> B{Failure?}; B -->|Yes| C[Investigate...]; C --> D[Debug]; D --> B; B ---->|No| E[Success!];

sequenceDiagram autonumber Server->>Terminal: Send request loop Health Terminal->>Terminal: Check for health end Note right of Terminal: System online Terminal-->>Server: Everything is OK Terminal->>Database: Request customer data Database-->>Terminal: Customer data