Low-Level Design at Flipkart frequently shows up as a hands-on machine-coding round rather than a whiteboard-only discussion — you're expected to actually write working class code for a booking, ticketing, or trading-style system, not just describe one. Interviewers probe schema extensibility and concurrency handling as much as the class diagram itself.
Design a system covering the core booking entities for an airline: searching flights, booking a ticket for a passenger, and managing fares. Cover entity modeling, a database schema, and a REST API surface for the booking operations.
- Drive requirement clarification yourself first — what needs to support concurrent access, and what can stay simple.
- Think through normalization: which entities and relationships need their own tables versus being embedded.
- Be ready to defend any REST endpoint design and how it maps to the underlying schema.
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The class design, entity list, schema, concurrency strategy and full worked solution for these — plus the one above — are part of the Placement-Ready PYQ Kit.
2 more LLD prompts with full class designs in the full Placement-Ready PYQ Kit