"Dynamic-Credential"
- HashiCorp Vault Dynamic Credential：lease 治理跟 application 整合的實作層 Vault database secrets engine 怎麼配、application 怎麼 renew lease、production 五大踩雷（lease 過期 race、DB max_connections 撞牆、Vault sealed、token expire、scope 過寬）、容量規劃跟 vault-agent injector 整合