Asked in Flipkart Machine Coding Round
DistributedQueue-Kafka
Open-source SDE-2 backend interview handbook with Java, DSA, LLD, HLD, system design, diagrams, runnable examples, and printable guides.
FlipFin/FlipMed - Asked in Flipkart Machine Coding Round
Design Snake And Ladder | Machine Coding Round Questions
InMemoryKeyValueStorage-Redis
LoggingLibrary - SLF4J Asked in Flipkart Machine Coding Round
RoutingService / Router
Open-source Java 21 and DSA books for SDE-2 interview preparation—from fundamentals to advanced engineering.
Master Java Concurrency & Multithreading for SDE2/Senior interviews. Featuring 20+ hands-on labs, classic problems (BlockingQueue, RateLimiter), and LLD concurrency challenges with skeleton code and interview follow-up questions.
Spring Boot 3 / Java 17 movie ticket booking system — multi-city catalog, seat-level holds with pessimistic locking, tiered pricing, discount codes, refund policies, async notifications. SDE-2 take-home.
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