Oracle OCM, MySQL OCP certified expert, ITPUB columnist. In 2014, I joined Hangzhou Meichuang Technology Co., Ltd. and worked as senior DBA, senior architect, project manager and department manager. In 2021, I published the book "DBA Challenge Guide: Left-handed Oracle, Right-handed MySQL". With nearly 10 years of working experience in the database field, TB-level high concurrency database management experience, and a large number of database training experience for medium and large industrial customers, I have a deep understanding of the internal principles, architecture and data page/block structure of Oracle and MySQL.

I have rich experience in various new features of Oracle and MySQL, asynchronous/semi-synchronous/synchronous high availability architecture technology and performance tuning. I have accumulated a lot of practical experience in the principle, deployment and application of load balancing, read/write separation and open source middleware. Good at fault diagnosis and Oracle, MySQL database abnormal opening and data disaster rescue. Our service industries include telecom operators, communication equipment manufacturers, banks, financial industry, medical care, government, etc. We have provided technical support to more than 200 customers. I have organized and trained 100+ scale professional database training for many times. I have written database related course materials for domestic colleges and universities, enabled database training for customers in different industries, as well as Oracle and MySQL certificate training for peers in the industry.