Implement a resilient email sending service in TypeScript/JavaScript.

Requirements:

1. Create an EmailService class that works with two mock email providers.
2. Implement retry logic with exponential backoff.
3. Add a fallback mechanism to switch providers on failure.
4. Ensure idempotency to prevent duplicate sends.
5. Implement basic rate limiting.
6. Provide status tracking for email sending attempts.

Key Features:

• Retry mechanism
• Fallback between providers
• Idempotency
• Rate limiting
• Status tracking

Bonus:

• Circuit breaker pattern
• Simple logging
• Basic queue system

Guidelines:

• Use TypeScript/JavaScript
• Minimal external libraries
• Include documentation and unit tests
• Focus on clean code and SOLID principles
• Mock providers instead of actual email sending

Time: 2-3 hours

Deliverables:

• Source code
• README with setup instructions and assumptions
• Unit tests

Evaluation Criteria:

• Code quality and organization
• Correct implementation of required features
• Error handling and edge cases
• Testability
• Documentation clarity

---

Please complete this assignment and share 1) Github repo URL (public) 2) Screencast explanation of demo & code ( the video must shows your face ) 3) Cloud deployed version of the API endpoint