interview_internal_reference

This repository is a curated collection of technical interview questions and detailed answers from top Chinese technology companies, including Alibaba, Tencent, Baidu, Meituan, and Toutiao (ByteDance). The problem it solves is straightforward: preparing for a software engineering interview at a major Chinese tech company requires deep knowledge of low-level systems, databases, algorithms, and high-performance computing topics — and these questions are hard to find collected in one place. The README describes it as an ongoing summary updated through 2025.

The content is organized by company and by topic. The company-specific sections contain questions that have reportedly been asked in real interviews at each firm, along with answers that go into technical depth. The topic-specific sections cover MySQL internals (like index structures and point-in-time recovery), Redis, MongoDB, Nginx, Zookeeper, networking, memory management, CPU architecture, disk I/O, algorithm problems, concurrency, and security. The README is primarily in Chinese and the questions are specific enough to include scenarios like designing a distributed email system, analyzing how a Weibo celebrity's post crashes the system, and understanding FPGA computational performance.

You would use this repository when studying for backend or infrastructure engineering interviews at large Chinese tech companies. It is particularly useful for candidates targeting positions in distributed systems, high-performance C++ or Java server development, or database engineering. The repository's listed language is Python, but most content is Markdown documentation rather than runnable code. The topics tag includes cpu, high-performance, interview, MongoDB, MySQL, network, Nginx, and Redis.