System Design for E-Learning Platform

Overview

• System design is crucial for interviews, especially for MNCs.
• Objective: Design an e-learning platform similar to Udemy.

Key Points

Functional Requirements

• Core functionalities include:
  • Course viewing and enrollment
  • Certificate issuance upon course completion
• User must be able to search for courses efficiently.

User Requirements

• Users should access content easily, indicating:
  • Course ratings and categories (e.g., coding, public speaking)
  • Mobile responsiveness and multilingual support (Internationalization - i18n)
• Lazy loading for performance optimization in content loading.

UI Design

• Home Page:
  • Search bar for course search.
  • User profile icon/button with account settings.
  • Display of trending and best-selling courses.
• Course Page:
  • Detailed view for each course including price, description, and purchase options.

Components

Frontend Architecture

• Use React components for:
  • Header
  • Footer
  • Course cards
  • Search bar

Backend APIs

• Course API:
  • Fetch courses based on categories and pagination.
• Suggestion API:
  • Provide course suggestions based on user input.

Data Flow

• Data fetched through APIs populates the frontend.
• Suggestions auto-populate as users type in the search bar.

Optimization Techniques

• Code Splitting:
  • Load only the necessary code to speed up response time.
• Image and Video Formats:
  • Use modern formats like WebP for images and WebM for videos to enhance loading speed.
• Virtualization:
  • Render only displayed elements to improve performance.

Conclusion

• Emphasis on collaboration during design and implementation.
• Focus on user interface, functional requirements, and optimization.

Further Learning

• Look into low-level designs and additional system design metrics.