Backend resumes must prove your ability to build stable, scalable distributed systems: - Concurrency & Load: Queries per second (QPS), active concurrent WebSocket connections, or background workers. - Data Engineering & Caching: PostgreSQL schema partitioning, Redis caching layers, message queues (Kafka, RabbitMQ). - Reliability & Observability: Prometheus metrics, tracing, rate limiting, and zero-downtime database migrations.
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Lead with the language you are most comfortable defending in live whiteboarding (e.g., Go, Java, Python, or Node.js).
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A milestone-based progression covering languages, relational vs document databases, API protocols, caching, message queues, and cloud deployment.
Move beyond basic CRUD. Project concepts featuring distributed rate limiters, message queue workers, cache synchronization, and WebSocket chat.
Deep-dive questions on REST vs GraphQL vs gRPC, JWT vs session authentication, database connection pooling, and eventual consistency.