You need to monitor system health during key and certificate rotation because these changes can introduce authentication failures, TLS handshake issues, or middleware disruptions. Observability hooks help you detect problems early and confirm that critical security and performance features remain intact after an upgrade.

Use the following checks to ensure system stability during rotation:
  • Watch for a sudden spike in authentication error rates during key swaps.
  • Track TLS handshake failures after certificate rotation.
  • Confirm that rate limit audits continue to log events. This approach ensures that middleware remains intact after an upgrade.