Files
lmxopcua/docs/plans
Joseph Doherty aec5ce565a docs: record value-pipeline batching (plan 2026-08-15)
- docs/v2/Galaxy.Performance.md gains a "Value-path batching (2026-08-15)"
  section: the batch seams (IBatchSubscribable / PollGroupEngine onBatch ->
  AttributeValueBatchPublished -> AttributeValueBatchUpdate -> sink WriteValues
  with 512-chunked single-lock batches in the node manager), the invariants (#519
  status codes verbatim, per-ITEM metering, Modbus deadband honored via the
  driver-filtered buffer, the ValueWriteBatchException partial-failure contract),
  the RealmKey re-key, and the pinned dispatcher's throughput 1 -> 100.

- The plan doc gains a "Follow-ups (recorded, not implemented)" section: the
  PollGroupEngine unconditional-collection trap (a future per-tag filter in
  S7/AbCip/FOCAS would silently reintroduce the deadband-bypass bug), a two-level
  driverId -> (rawPath -> refs) routing map, null/empty guard consistency on the
  internal batch messages, a possible DriverHostActorLiveValueTests merge, and the
  pre-existing aborted-cycle tail-loss on the three unbuffered drivers.

- tasks.json: all 13 tasks completed.

CLAUDE.md needed no edit: its only statement in this area ("One driver publish for
a RawPath fans (in DriverHostActor) to the raw NodeId AND every referencing UNS
NodeId") is still true — batching changed the message granularity, not the
fan-out semantics.

Verification: dotnet build ZB.MOM.WW.OtOpcUa.slnx clean (0 errors, no new warning
classes, zero warnings in any production file). 9 unit projects green, 3470
passed / 5 skipped / 0 failed: Core.Abstractions 305, Core 351+1s, Commons 348,
Runtime 575+3s, OpcUaServer 424+1s, Modbus 399, S7 302, AbCip 410, FOCAS 356.
No DB-backed suite was run — tests/Server/ZB.MOM.WW.OtOpcUa.Server.Tests does not
exist, and nothing this branch touches is covered by the SQL-backed projects.
2026-08-15 13:10:55 -04:00
..