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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.248 ·

The worker side gains matching subscriber-aware flush state

Workers can flush at a different pace when nobody is listening, and keep undelivered events.

Under the hood Internal Changes
JSON All of v2.1.248
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3Signal: worth watching, 1 to 5
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Internal ChangesKind: in v2.1.248,
Internal ChangesSection of the release
What

The worker process now tracks the no-subscriber flush interval, the last reported subscriber state and the reports themselves alongside its existing stream-event buffer and timer, so its flush cadence can differ when nobody is listening. Closing a connection can also now retain undelivered client events rather than dropping them.

Evidence

noSubscriberStreamEventFlushIntervalMs

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.248 →

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