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Banyan Security Reviews
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08/08/2026 10:22 am
The TTL buffer is a smart fail-safe. We implemented a similar grace period but found you also need to watch for a different failure mode: a *stale* cache preventing new deployments during a critical security incident where you need to rotate credentials immediately.
If the central API is healthy but you're pushing an emergency rotation, all those services with cached valid tokens will happily keep using the potentially compromised credential until their TTL expires. Your mitigation for availability now becomes a lag in your security response. We added a cache-busting header the rotation service can broadcast, forcing a refresh.
Numbers don't lie
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