A comprehensive guide to managing and verifying application configurations, environment variables priority, HashiCorp Vault secrets, Kafka topics, ACLs, schema registry compatibility, database migrations, and post-deploy health verification.
Deep dive into Externalized Configuration — 12-Factor App principle III, Spring Cloud Config Server with Git backend, hot-reload via Spring Cloud Bus, Kubernetes ConfigMaps/Secrets, HashiCorp Vault, and configuration hierarchy.
SSO, federated identity, directory services, service accounts, PAM, just-in-time access, and cloud IAM best practices for AWS and Kubernetes — for Java/Spring engineers.
