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Purview: Parallelize PSPC cold-cache scope refresh (#5832)

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* Parallelize Purview PSPC cold cache path

* Cache Purview payment-required state for scope refresh

* Cache Purview payment-required state for scope refresh

* Align Purview policy action dedupe and 402 caching

 Deduplicate combined policy actions by action and restriction action so restriction-only actions are preserved
without duplicating identical entries. Cache tenant-level payment-required state from background scope refresh so
subsequent calls short-circuit consistently.

* .NET: Implement best-effort caching for background job scope retrieval and add unit tests for cache write failures

* Purview - feat: Enhance ScopedContentProcessor to queue ContentActivityJob when no applicable scopes are found and update related tests

* docs: Update purview package README and AGENTS documentation to reflect caching optimizations and policy enforcement scenarios

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
Taisir Hassan
2026-06-09 18:01:21 +00:00
committed by GitHub
co-authored by Copilot
parent 2a345e5d3b
commit 383d551b86
16 changed files with 917 additions and 228 deletions
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python/packages/purview/README.md
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@@ -320,4 +320,5 @@ except (PurviewAuthenticationError, PurviewRateLimitError, PurviewRequestError,
- **Streaming Responses**: Post-response policy evaluation presently applies only to non-streaming chat responses.
- **Error Handling**: Use `ignore_exceptions` and `ignore_payment_required` settings for graceful degradation. When enabled, errors are logged but don't fail the request.
- **Caching**: Protection scopes responses and 402 errors are cached by default with a 4-hour TTL. Cache is automatically invalidated when protection scope state changes.
- **Cold-cache parallelization**: On a `ProtectionScopes` cache miss, scopes are refreshed in the background while `ProcessContent` runs in the foreground.
- **Background Processing**: Content Activities and offline Process Content requests are handled asynchronously using background tasks to avoid blocking the main execution flow.