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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 v2.1.227 ·

Optional key/value storage backend threaded through background sessions, plugins and the daemon

Background jobs, the daemon, plugin caches and plan docs can all route through the optional storage backend.

Nothing to try yet In Development
JSON All of v2.1.227
Nothing to try yetTier: how much it should matter to you
1Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Storage BackendArea: what it touches
In DevelopmentKind: in v2.1.227,
In DevelopmentSection of the release

Many state files gained storage-backend paths with filesystem fallbacks, and nothing visibly attaches a backend.

What

A large amount of state that was read and written directly as files can now go through an optional key/value storage backend, with the file path kept as a fallback at every call site. Covered: background job state.json and adopt.json, the daemon roster.json, pty pid files, the host-managed tombstone, bridge pointer files, plugin cache and .in-use markers, plan and workshop docs, task lists, and daemon log tailing. Nothing in the source shows what attaches the backend, so whether it is used is decided elsewhere.

Details
  • UI code reaches the backend through a new React context named storageV5; when it is undefined, every path falls back to plain filesystem access
  • new error text includes "adopt.json v5 write failed", "bg roster.json v5 read failed", "host-managed tombstone v5 write failed" and "[bg] v5 jobs listing failed: cursor did not advance"
Evidence

[bg] v5 jobs listing failed: cursor did not advance

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

See this entry in the whole of v2.1.227 →

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