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Walmart

Senior Software Engineer

BlockingQueue usage in production

Medium

Round 1 (Core Java & Concurrency)general_knowledgeCandidate Selected

Java Concurrency BlockingQueue

What is a BlockingQueue, and where is it used in production systems?

This question was asked in

Walmart Senior Software Engineer Interview Experience

The interview process at Walmart consisted of five comprehensive technical rounds covering a broad range of topics. Across the rounds, the candidate was evaluated on Core Java & Concurrency, Spring Boot internal mechanics, Microservices architecture and DevOps practices, SQL queries and indexing, and Low-Level System Design (LLD). Overall, the process was thorough with a medium-to-hard difficulty level, heavily focusing on deep technical understanding, concurrency, and SOLID principles.