The architecture pillar of senior interviews — horizontal scaling and load balancing, caching strategies, database sharding and replication, the CAP theorem and consistency models, message queues and delivery guarantees, and reliability patterns (circuit breakers, rate limiting, idempotency, Bloom filters). Concept-first questions that build the vocabulary and judgment to reason about real distributed systems. Part of the Developer track.
• Meets you at your level — never too easy, never too hard.
• Adapts every question to how you’re doing.
• Tracks your level over time. Skill practice, not a test.
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