13.3. State Repository

Orchestrations are the central place where the flow of business processes are controlled. You could say that the properties of an orchestration and the current point of execution are the state of a process instance. Therefore, it makes sense architecturally to manage process state in the orchestration layer because it promotes the application of the Service Statelessness (700) principle.

Figure 13.21. The WF runtime positioned within the WF layers that host a SQL Server state repository shared by services also hosted within the overall orchestration environment.

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