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Interview Preparation
Core software engineering, problem solving, APIs, databases, testing and design.
Practice role-specific questions with concise answers and key points.
Answer: An array stores elements in contiguous memory and provides fast indexed access. A linked list stores nodes connected by references, making insertion and deletion easier when a node position is known but indexed access slower.
Answer: Big O describes how an algorithm's time or space requirement grows as input size increases. It helps compare scalability independently of machine-specific constants.
Answer: Use multiple stateless application instances behind a load balancer, durable data storage with appropriate replication, timeouts and retries, health checks, observability and graceful degradation.
Answer: First assess impact and stabilize the system, then reproduce and diagnose using logs and metrics, deploy the smallest safe fix, verify recovery and document the root cause and prevention steps.