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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.223 ·

Daemon lock and auto-update lock gained storage-backend implementations

Lock files that stop two sessions clashing can now live in a storage backend instead of on disk.

Under the hood In Development
JSON All of v2.1.223
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
Storage BackendArea: what it touches
In DevelopmentKind: in v2.1.223,
In DevelopmentSection of the release
What

Acquiring, reading, replacing and releasing the daemon lock, plus the auto-updater's stale-lock detection and release, now each have a storage-key branch alongside the original file-based logic.

Details
  • acquisition uses an ifAbsent write with a umask-derived mode; staleness is decided from stat; release deletes the key
  • lock-contention telemetry codes trigger a re-read and one retry before the acquisition fails
  • the file-based path is still present and is what runs without a backend
Evidence

[DaemonLock] Failed to acquire daemon lock:

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

See this entry in the whole of v2.1.223 →

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