Follow Discord
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 v2.1.309 ·

Two new settings for remote sessions: own connection pool and plugin download count

CLAUDE_CODE_CCR_OWN_CONNECTION_POOL and CLAUDE_CODE_SYNC_PLUGINS_DOWNLOAD_CONCURRENCY are new environment variables used by remote sessions

Under the hood Notable Internal Changes
JSON All of v2.1.309
Under the hoodTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Cloud SessionsArea: what it touches
Internal ChangesKind: in v2.1.309,
What probably matters to youSection of the release

Unclear What turning on CLAUDE_CODE_CCR_OWN_CONNECTION_POOL actually changes is not known.

What

Two new environment variables, which are named values set before Claude Code starts, have been added to the list passed into remote sessions that run in the cloud:

  • CLAUDE_CODE_SYNC_PLUGINS_DOWNLOAD_CONCURRENCY sets how many plugin downloads run at the same time while plugins are synced. When it is unset, Claude Code uses the same fixed number as before.
  • CLAUDE_CODE_CCR_OWN_CONNECTION_POOL, when set, turns on an own-connection-pool behaviour. Without it, that behaviour is decided by a server-side switch that is off unless the server says otherwise, so nothing changes if you leave it unset.

The record Claude Code keeps of each plugin sync round now also notes how many downloads ran in parallel.

Why

The download setting lets plugin sync be sped up or slowed down. The connection pool setting gives a way to switch that behaviour on directly instead of waiting for the server to do it.

Read from
Feature flag
tengu_reactive_quilt Not enough to say

Nothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.

This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.309: off

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.309. It isn't a statement about your account. What a flag value here can and cannot tell you

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhat turning on `CLAUDE_CODE_CCR_OWN_CONNECTION_POOL` actually changes is not known.

See this entry in the whole of v2.1.309 →

Feedback