Design a Movie Reviews Aggregator

Functional Requirements:

• Aggregate movie reviews from multiple external sources (e.g., IMDb, Rotten Tomatoes, Metacritic).
• Store and display movie metadata: title, release year, genre, synopsis, director, etc.
• Allow users to search for movies by title, genre, or release year.
• Show aggregated ratings and individual reviews per movie, with the ability to filter reviews by source.
• Registered users can submit their own reviews and ratings for movies.
• Users can upvote or downvote reviews.
• Users can register, log in, and manage a list of favorite movies.

Non-Functional Requirements:

• System should be able to handle at least 1 million users and scale to 10 million.
• Average API response time should be under 200ms under normal load.
• Data consistency is important for aggregated ratings and reviews.
• System should be highly available (99.9% uptime).
• Secure storage of user data and API credentials for external sources.
• Implement rate limiting to prevent API abuse.
• Support regular updates from external review sources (e.g., daily sync).