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PROMPT-CACHING4 MIN READ

Commit to a cache measurement loop

Commit to measuring one prompt-caching experiment with a realistic two-day follow-up.

Run a two-day measurement loop for one prompt-caching experiment Use this when a prompt refactor has shipped or is about to ship. The goal is to learn whether the cache boundary worked and whether answer quality held. A prompt refactor just moved a stable policy/rubric block before dynamic user facts and needs cache-hit proof. An agent prompt just split stable tool schemas from runtime tool results and needs latency plus quality review. A provider migration changed cache behavior and needs a before/after comparison using provider-specific usage fields. For [workflow] prompt_version [version], I will compare [before window] vs [after window] on…

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