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feat(opcuaserver): process-wide HistoryRead batch limiter — flood degrades to BadTooManyOperations, not pool exhaustion (03/S3)

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Joseph Doherty
2026-07-13 12:18:35 -04:00
parent 888cf86655
commit 3cebfae417
3 changed files with 242 additions and 70 deletions
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archreview/plans/R2-08-ldap-historyread-async-plan.md.tasks.json
+1 -1
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@@ -13,7 +13,7 @@
{ "id": "R2-08-T10", "subject": "Async-ify ServeRawPaged (page read + tie-cluster over-fetch) + extract ServeEventsAsync", "status": "completed", "blockedBy": ["R2-08-T9"] },
{ "id": "R2-08-T11", "subject": "RunBounded fan-out in all four HistoryRead arms, single bridge per arm (turns T7 green) + upper-bound + isolation tests", "status": "completed", "blockedBy": ["R2-08-T9", "R2-08-T10"] },
{ "id": "R2-08-T12", "subject": "Per-request HistoryRead deadline CTS — hung backend surfaces BadTimeout per node", "status": "completed", "blockedBy": ["R2-08-T11"] },
{ "id": "R2-08-T13", "subject": "Process-wide concurrent-batch limiter — saturation degrades to BadTooManyOperations (lazy gate, bounded wait)", "status": "pending", "blockedBy": ["R2-08-T12"] },
{ "id": "R2-08-T13", "subject": "Process-wide concurrent-batch limiter — saturation degrades to BadTooManyOperations (lazy gate, bounded wait)", "status": "completed", "blockedBy": ["R2-08-T12"] },
{ "id": "R2-08-T14", "subject": "Docs (Historian.md + CLAUDE.md ServerHistorian table + security.md) + full touched-suite and whole-solution regression sweep + STATUS.md entry", "status": "pending", "blockedBy": ["R2-08-T5", "R2-08-T6", "R2-08-T13"] }
],
"lastUpdated": "2026-07-12"