Backend Fundamentals Deep Dive: MySQL Internals, Redis, and the HTTP/HTTPS Request Lifecycle
Company: ByteDance
Role: Backend Engineer
Category: Software Engineering Fundamentals
Difficulty: hard
Interview Round: Technical Screen
Overview: This question tests deep backend engineering knowledge across three core domains: MySQL InnoDB internals (logging, indexing, isolation), Redis persistence and eviction mechanics, and the full HTTP/HTTPS request lifecycle. It evaluates practical, systems-level understanding that backend roles commonly probe to assess readiness for production engineering work.
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