Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
Internal ChangesKind: in v2.1.304,
Internal ChangesSection of the release
What
Claude Code reuses parts of earlier requests through the prompt cache, and it keeps a short fingerprint of each request to spot when the cache will no longer match. It now builds that fingerprint one piece at a time instead of joining everything into one long text first.
Why
This is an internal change and may have no visible effect.
