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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.0.2

Improved Session Persistence Reliability

What: Removed client-side duplicate UUID checking in favor of server-side validation

Details:

  • Previously, the client would skip uploading session entries if their UUID was already fetched
  • This client-side cache could become stale in multi-client scenarios
  • Now all entries are uploaded, and the server handles deduplication via Last-Uuid headers and 409 conflict detection
  • Simplifies retry logic and handles partial fetches more robustly
  • Evidence: Function refactor from V8B() at line 397227 to ZPB() at line 436288

Why this matters: Session persistence is more reliable when multiple processes or partial fetch operations are involved.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.0.2 →