● Have many years of experience in mainstream industries: ◆ Internet industry: I have many years of working experience in Tencent and 56 Video, and have achieved good results; ◆ Telecommunications industry: Leading the design and development of multiple core systems in Sunrise Electronics; ◆ O2O and Internet of Things: In Aimei, participated in 2 rounds of financing, with a valuation of more than 1 billion, more than 20 million users, and an annual revenue of more than 5 Billion● Comprehensive expertise: ◆ Distributed: proficient in the design and implementation of distributed systems; ◆ CDN: Proficient in the key technology of CDN, has key output in Tencent's self-built CDN and 56 network CDN Content distribution technology: 56VFS project Content management technology: 56VFS project Webserver: Tencent's self-built CDN webserver, including 10G network card, bandwidth control and anti-theft chain, etc. Scheduling balance: Participate in the download quality optimization project of Tencent's self-built CDN (linear programming and prediction) ◆ Large systems: proficient in the design and implementation of observability and controllability of complex large systems, for high concurrency, high availability, and high load The system has deep understanding and rich practice from the bottom to the realization; ◆ Security: Proficient in host security (EDR), familiar with common defense penetration tools such as honeypots and sandboxes, and understand WEB security; ◆ Artificial intelligence: familiar with common artificial intelligence algorithms and scene applications, including face recognition, NLP, etc.; ◆ Recommendation system: Familiar with recommendation engine, have experience in collaborative filtering recommendation, tag recommendation and clustering algorithm recommendation; ◆ Search engine: have practiced crawlers, word segmentation and inverted indexing and integration; ◆ Video products: rich experience in short video on-demand and recommendation, rich experience in live video, and familiar with interactive live broadcast; ◆ Process information: Promote the implementation of process from procurement, production to sales and after-sales; ◆ Database: Very familiar with Oracle, MS SQL Server, Informix, MySQL, Redis, Clickhouse, etc. ◆ Middleware: familiar with Kafka, Rabbitmq, Zeromq ◆ Middle stage: construction of payment middle stage, IoT business center, IoT paas platform, etc. ◆ Development language: proficient in c, very familiar with java, c++, familiar with go, php, python, lua, familiar with c#, vue, etc.; ◆ Operating system: proficient in linux operating system, familiar with linux kernel development; proficient in network tcp/ip protocol, proficient in http protocol;