Why it matters

Secret leaks are top breach patterns. Understanding proper management prevents them.

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The architecture

Never in code: repos leak. Never in env vars for very sensitive.

Secret manager: fetch at startup or per-request.

Secrets handlingSecret managerVault / GCP SM / AWS SMFetch at startupor per-requestRotate + auditregular practiceGoogle Cloud: use ADC + Secret Manager; native integration with Cloud Run
Secret management pattern.
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How it works end to end

ADC (Application Default Credentials) for Google APIs. No stored keys.

Rotation: automate regular rotation.

Audit: log secret access.

Scan: leak detection in Git.