Observed arrival · 2026-10-08
CacheCanary: prompt-cache diagnostics for Claude on Bedrock
A free, open-source CLI and GitHub Actions workflow that measures Bedrock prompt-cache use, explains misses, and estimates their cost.
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●Pro
◎Niche
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- For
- Teams running Claude workloads on Amazon Bedrock
- Worth noticing
- A sample CI check flags a 50% cache hit rate against an 80% target and estimates the cost of misses.
Field notes
The workflow starts with either a saved request in JSON or Bedrock invocation logs copied from S3, so teams can inspect examples without AWS access. For live log analysis, the page notes that invocation logging must first be enabled; its sample output shows eight calls, a 50% hit rate, and a threshold failure at an 80% target.
Observed signals
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○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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