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Product Management Technical Question: Designing a scalable adult content detection system for Twitter

How would you build a system that detects adult content on the twitter platform?

Product Technical Hard Member-only
System Design Technical Architecture Risk Management Social Media Content Platforms AI/ML
Privacy Machine Learning Content Moderation Scalability Twitter

Building an Adult Content Detection System for Twitter: Technical Architecture and Implementation

Introduction

The challenge of detecting adult content on Twitter's platform presents a complex technical problem that intersects with user experience, platform integrity, and scalability concerns. Our goal is to design a robust system that can efficiently and accurately identify adult content across millions of tweets and media uploads daily, while maintaining Twitter's performance standards and user privacy.

I'll approach this problem by first clarifying our technical requirements, analyzing the current state and challenges, proposing technical solutions, outlining an implementation roadmap, defining metrics and monitoring strategies, addressing risk management, and finally, discussing long-term technical strategy.

Tip

Ensure the adult content detection system aligns with Twitter's content policies and legal requirements across different jurisdictions.

Step 1

Clarify the Technical Requirements (3-4 minutes)

"Given Twitter's massive scale, I'm assuming we're dealing with a distributed system processing millions of tweets per second. Can you confirm our current infrastructure's capacity and any specific performance benchmarks we need to meet for this new feature?

Why it matters: Determines the scale of our solution and potential bottlenecks Expected answer: Distributed system handling 500 million tweets daily Impact on approach: Need to design for high throughput and low latency"

"Considering the sensitive nature of content moderation, I'm curious about our current approach to user privacy and data handling. Are there specific regulatory requirements or internal policies we need to adhere to when implementing this system?

Why it matters: Influences our data processing and storage strategies Expected answer: GDPR compliance required, minimal data retention Impact on approach: Need to implement privacy-preserving techniques and strict data governance"

"Looking at Twitter's existing content moderation tools, I'm wondering about the current technical stack for similar features. Are we building on top of existing systems or starting from scratch?

Why it matters: Determines integration points and potential reuse of existing components Expected answer: Existing ML pipeline for spam detection, need to extend for adult content Impact on approach: Leverage existing infrastructure while adding specialized models for adult content detection"

"Considering the potential for false positives and the impact on user experience, what's our target accuracy rate for this system? And how does this balance with performance requirements?

Why it matters: Influences model selection and processing pipeline design Expected answer: 99% accuracy with <100ms processing time per tweet Impact on approach: May need to implement a multi-stage filtering process to balance accuracy and speed"

Tip

After clarifying these points, I'll state that I'm assuming we have access to Twitter's existing ML infrastructure and that we need to design a system that can scale to handle Twitter's full tweet volume with minimal impact on overall platform performance.

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