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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.259 ·

New event-uploader 'no subscriber' upload holding mechanism

Event uploads can be held for a configurable period while nobody is watching the session, then flushed with a log.

TierUnder the hoodhow much it should matter to you
Useful3my rating, 1 to 5
Signal3worth watching, 1 to 5
AreaRemote Controlwhat it touches
KindInternal Changesin v2.1.259,
Under the hood No documentation found

Event uploads can be held for a configurable period while nobody is watching the session, then flushed with a log.

The CCR (client-side reporting) client can now hold back durable/internal event uploads for a configurable duration, via noSubscriberUploadHoldMs, when no subscriber is watching the session, instead of uploading immediately. Held events are flushed later, with a log of how long and how many events were held.

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Names in the bundlenoSubscriberUploadHoldMs

See this entry in the whole of v2.1.259 →

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