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Design a Netflix-like Video Platform
Scenario
Design a comprehensive video streaming platform similar to Netflix. The platform must support:
- Search: Users should be able to search for videos by various criteria such as title, tags, and people involved.
- Stream: Videos must be streamable to a diverse range of client devices, including web browsers, mobile applications, and smart TVs.
- Upload: The platform needs to accommodate video uploads from both individual users (user-generated content) and professional studios.
Functional Requirements
- Content Discovery: Users can browse and search a video catalog, viewing associated metadata like title, description, and thumbnails.
- Video Playback: Users can stream selected videos with adaptive bitrate (ABR) capabilities and resume playback from where they left off.
- Content Ingestion: Content providers can upload videos. These uploaded videos must undergo processing before becoming available for streaming to end-users.
Non-Functional Requirements
- Performance: Low video startup latency and smooth, uninterrupted playback are critical.
- Availability: The platform must ensure global availability.
- Resilience: High reliability and fault tolerance are required.
- Observability: The system should be observable to facilitate monitoring and troubleshooting.
- Security: Support for content protection, at a minimum via tokenized URLs, with an option for Digital Rights Management (DRM).
Assumptions
- User Base: Approximately 50 million Daily Active Users (DAU).
- Peak Load: Up to 5 million concurrent video streams during peak periods.
- Geographic Reach: A global audience necessitating a multi-region deployment strategy.
- Video Characteristics: Source video files typically range from 1 to 10 GB, which will be encoded into multiple renditions for adaptive streaming.
Deliverables
Candidates should explain their design focusing on the following aspects:
- APIs: Define both client-facing and uploader-facing APIs.
- Data Model & Storage: Describe the data model and justify the chosen storage solutions.
- High-Level Architecture: Outline the overall system architecture, specifically detailing the video upload and processing pipeline, the streaming delivery path, and the search infrastructure.
- Caching & CDN Strategy: Propose a comprehensive caching and Content Delivery Network (CDN) strategy.
- Reliability, Consistency, & Scaling: Discuss trade-offs related to reliability, data consistency, and system scalability.
- Operational Aspects: Address monitoring, rate limiting, and abuse prevention mechanisms.
AI interview prep
Core dilemma
Balancing extreme global read throughput for video streaming with the complex, asynchronous processing of high-volume video uploads, all under strict latency, availability, and cost constraints.
Mid-level signals3
Senior signals3
Red flags3
3 tradeoffs and 3 stress tests locked
Interview prep
Unlock the interviewer X-Ray rubric, tradeoff matrix, stress tests, clarifying questions, and key concepts.
Design a Netflix-like Video Platform
Scenario
Design a comprehensive video streaming platform similar to Netflix. The platform must support:
- Search: Users should be able to search for videos by various criteria such as title, tags, and people involved.
- Stream: Videos must be streamable to a diverse range of client devices, including web browsers, mobile applications, and smart TVs.
- Upload: The platform needs to accommodate video uploads from both individual users (user-generated content) and professional studios.
Functional Requirements
- Content Discovery: Users can browse and search a video catalog, viewing associated metadata like title, description, and thumbnails.
- Video Playback: Users can stream selected videos with adaptive bitrate (ABR) capabilities and resume playback from where they left off.
- Content Ingestion: Content providers can upload videos. These uploaded videos must undergo processing before becoming available for streaming to end-users.
Non-Functional Requirements
- Performance: Low video startup latency and smooth, uninterrupted playback are critical.
- Availability: The platform must ensure global availability.
- Resilience: High reliability and fault tolerance are required.
- Observability: The system should be observable to facilitate monitoring and troubleshooting.
- Security: Support for content protection, at a minimum via tokenized URLs, with an option for Digital Rights Management (DRM).
Assumptions
- User Base: Approximately 50 million Daily Active Users (DAU).
- Peak Load: Up to 5 million concurrent video streams during peak periods.
- Geographic Reach: A global audience necessitating a multi-region deployment strategy.
- Video Characteristics: Source video files typically range from 1 to 10 GB, which will be encoded into multiple renditions for adaptive streaming.
Deliverables
Candidates should explain their design focusing on the following aspects:
- APIs: Define both client-facing and uploader-facing APIs.
- Data Model & Storage: Describe the data model and justify the chosen storage solutions.
- High-Level Architecture: Outline the overall system architecture, specifically detailing the video upload and processing pipeline, the streaming delivery path, and the search infrastructure.
- Caching & CDN Strategy: Propose a comprehensive caching and Content Delivery Network (CDN) strategy.
- Reliability, Consistency, & Scaling: Discuss trade-offs related to reliability, data consistency, and system scalability.
- Operational Aspects: Address monitoring, rate limiting, and abuse prevention mechanisms.