Movie Ticket Booking (LLD) — Notes

Functional

• Browse theatres/movies/shows.
• View seat map; hold seats; pay; book.
• Cancel; refund.

Patterns

• Saga (booking).
• Strategy (pricing).
• State (seat / booking).
• Repository (DB access).

Trade-offs

• TTL holds prevent leaks; require sweep.
• Strong consistency on seats is mandatory.

Refs

• See companion design 05-ecommerce-marketplaces/ticketmaster for the full-system view.