A new diagnostic analyzes why a prompt-cache hit rate suddenly dropped, checking causes like a changed system prompt, changed tools, TTL expiry, or a changed model. It logs a categorized 'causes' list at warn level with a [PROMPT CACHE BREAK] ... line, including source, call count, and cache read/creation details.
New diagnostics for unexpected prompt-cache breaks
A new diagnostic explains why the prompt-cache hit rate suddenly dropped.
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
ImprovementsKind: in v2.1.260,
ImprovementsSection of the release