Meeting Scheduler System Design

Design a meeting scheduling system, similar to a calendar and scheduling assistant, that enables users to:

• Create meetings with a specified set of attendees.
• Efficiently find available time slots for all attendees within a given time range.
• Send invitations and track the RSVP status (accepted, declined, tentative).
• Prevent double-booking or clearly define the mechanisms for handling scheduling conflicts.

Discussion Points

• Core APIs for system interaction.
• Data model and appropriate storage choices.
• Strategies for computing availability efficiently at scale.
• Consistency requirements and concurrency control mechanisms.
• Indexing strategy and performance considerations for large-scale operations.

Assumptions

• The system must support millions of users, each with a potentially large number of events.
• Time zones are a critical consideration and must be handled correctly.