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AVEVA™ PI System™ Feedback Portal

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We created this site to hear your enhancement ideas, suggestions and feedback about AVEVA products and services. All of the feedback you share here is monitored and reviewed by the AVEVA product managers.

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Status Declined
Categories PI Web API
Created by Guest
Created on Aug 23, 2022

AF Dependency Removal

Can the PI Web API be configured to store its configuration information in a flat file or some other (non AF) mechanism?
  • ADMIN RESPONSE
    Aug 23, 2022
    Thank you for your feedback. Unfortunately, this feature is not a priority at time, so I am setting the status to declined.
  • Attach files
  • GaryYegiazaryan
    Jan 28, 2026

    The AF dependency for PI Web API warrants serious reconsideration from an architectural standpoint. Requiring a full AF Server and an associated SQL Server instance solely to support PI Web API configuration introduces a heavyweight, stateful infrastructure component into what should be a lightweight, stateless REST interface.

    The dependency also complicates edge and hybrid deployments. PI Adapters rely on the PI Web API to communicate back to the PI system. However, the requirement to maintain AF + SQL as a prerequisite means that even minimal edge deployments must maintain connectivity to centralized, stateful infrastructure. This is fundamentally misaligned with edge computing principles, where services must be deployable in isolated, resource‑constrained, or intermittently connected environments.

    The AF requirement introduces:

    • Unnecessary statefulness into a service that should be stateless

    • Tight coupling between PI Web API and AF schema/SQL persistence layers

    • Increased operational complexity, including patching, backups, failover, and lifecycle management of SQL + AF

    • Higher infrastructure cost, even for small‑scale or read‑only PI Web API use cases

    A flat‑file configuration store, embedded database, or pluggable configuration provider would eliminate these constraints and align PI Web API with modern edge‑native design patterns.