Dynamic database credential rotation for microservices
WHAT IT TESTS: dynamic secrets and zero-downtime rotation. OUTLINE: a secrets manager issues short-lived per-service credentials, services authenticate by workload identity and fetch or refresh secrets without restart, leases expire and rotate automatically.
WHAT IT TESTS: designing rotation that does not require redeploys. ANSWER OUTLINE: a central secrets manager like Vault generates dynamic, short-lived database credentials per service on demand; each microservice authenticates using its workload identity, not a stored secret, then fetches credentials and renews or re-fetches before lease expiry so no restart is needed. The manager rotates the underlying root credentials and revokes leases. Use connection pools that refresh on rotation.
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- #secrets-management
- #vault
- #rotation
- #microservices
- #security
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