Your application needs to communicate with multiple external services, each requiring different OAuth2 credentials. How would you manage and secure these credentials and configure the OAuth2 clients in your Spring Boot application?
- Hardcode the OAuth2 credentials directly in the application code to ensure easy access.
- Store the credentials in environment variables and configure multiple OAuth2 clients programmatically.
- Create a configuration file for each external service and store OAuth2 credentials there.
- Use a secret management tool like HashiCorp Vault to securely store and retrieve OAuth2 credentials dynamically.
To securely manage multiple OAuth2 credentials, it's best to store them in environment variables (option 2) and configure OAuth2 clients programmatically. Hardcoding credentials (option 1) is insecure and inflexible. Creating separate configuration files (option 3) can work but may not be as secure or manageable. Utilizing a secret management tool like HashiCorp Vault (option 4) provides dynamic, secure credential storage but may add complexity to the application.
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