Overview

Implement a service to generate and manage One-Time Passwords (OTPs) for user authentication. Use Redis for fast and temporary OTP storage to ensure secure and efficient verification.

Requirements

• Create a service that generates numeric OTPs (e.g., 6 digits).
• Store OTPs in Redis with a configurable expiration time (e.g., 5 minutes).
• Ensure OTPs can be associated with user identifiers (such as email or phone number).
• Provide methods to create, validate, and delete OTPs.

Acceptance Criteria

• OTPs are securely created and stored in Redis.
• Expired OTPs are not valid and are automatically removed from Redis.
• Service exposes clear methods for OTP creation, validation, and deletion.

Additional Notes

• Use environment variables for Redis connection configuration.

Feel free to discuss or suggest improvements for the OTP creation and authentication workflow.