Design a Web Analytics Tool (like Google Analytics)

Functional Requirements:

• Track website visits and page views.
• Capture user events (e.g., clicks, form submissions).
• Analyze traffic sources (direct, referral, search, social).
• Provide real-time and historical reports (daily, weekly, monthly).
• Support conversion tracking (e.g., purchases, signups).
• Allow segmentation of users based on device, browser, or location.
• Enable multiple user roles (admin, analyst, viewer) with authentication.

Non-Functional Requirements:

• Scalability: Handle up to 1 million unique visitors per month and 10 events per visitor.
• Performance: Real-time processing of events with low latency (within seconds).
• Data Retention: Store event data for up to 12 months.
• Security: Secure data in transit and at rest; enforce access control.
• Availability: High availability with minimal downtime.
• Usability: Provide an intuitive dashboard for data visualization and reporting.
• Maintainability: Easy to update and maintain the system.
• Interoperability: Provide APIs for integration with other tools and support data export.