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FAANG engineers use high-level design principles to create scalable systems.

FAANG interviewers evaluate problem understanding, architecture, scalability, and communication skills.

REST API design focuses on creating clean, efficient, and scalable web services.

HLD provides an overview of system architecture, while LLD details implementation specifics.

Search engines collect, index, retrieve, and rank documents to provide relevant results.

Microservices can communicate using five key patterns based on their needs.

Stateless servers are easier to scale because they don't store user session data locally.

The Saga Pattern manages distributed transactions using local transactions and compensating actions.