"Developers can update Claude’s instructions mid-task without breaking the prompt cache or routing the update thr…

"Developers can update Claude’s instructions mid-task without breaking the prompt cache or routing the update through a user turn" wtf? how??
Ranked #75 on backlist 2026-05-28 (28 May 2026 UTC) · by ·

How it ranks: Backlist reads my Twitter/X timeline, scores every tweet for substance with an LLM rubric (not engagement), and publishes the daily top picks with a one-line takeaway. Curated by Surya Dantuluri.