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System Design

WhatsApp System Design

Gain insights into designing a robust messaging system like WhatsApp, focusing on scalability, low latency, and ensuring security through real-time scenario-based questions.

Interview Details

Prepare to dive into a System Design Mock Interview modeled after real interview rounds at FAANG+ companies and other leading tech firms. In this session, you’ll design the architecture of a messaging platform like WhatsApp, focusing on scalability, low-latency delivery, security, and fault tolerance. The interview simulates a real System Design round, challenging you to define, design, and discuss a high-performance messaging system capable of supporting millions of concurrent users worldwide. Expect a blend of conceptual reasoning, detailed technical exploration, and scenario-based challenges.

What You'll Practice:

  • Structuring and communicating end-to-end system architectures clearly.
  • Designing scalable, reliable systems for message delivery, storage, and synchronization.
  • Applying System Design principles to database selection, messaging queues, and content delivery networks.
  • Creating clear, well-organized diagrams to illustrate system components, data flow, and interactions.
  • Thinking critically about trade-offs in latency, availability, consistency, and security under interview pressure.

By the end of this System Design Mock Interview, you’ll be ready to confidently approach system design interviews for real-time communication platforms, demonstrating strong architectural thinking and problem-solving skills.

Prepare to dive into a System Design Mock Interview modeled after real interview rounds at FAANG+ companies and other leading tech firms. In this session, you’ll design the architecture of a messaging...

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Interview Guidelines

The interviewer simulates a real-world interview an adapts accordingly.

Ask for hints or clarifications if you're stuck.

What to expect

50 Responses
Diagramming tool

Built to Simulate the MAANG Experience

Prep for Every Loop

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Practice explaining complex technical concepts verbally to build confidence and refine your communication skills.

Detailed Analysis

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Unlock insights that highlight your weaknesses and gives you sample responses.

Instant, Actionable Feedback

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Receive immediate, targeted guidance on solution correctness, complexity, and approach.

Interactive Environment

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Hone your coding logic in an editor and bring your system designs to life with an integrated diagramming workspace.

Tailored to Your Preferences

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Get relevant practice scenarios for your role and experience, whether you're a junior or an engineering manager.