Job responsibilities: 1. Responsible for planning, architecture design, and performance optimization of database related products and solutions; 2. Design, organize, and optimize existing database cache (Redis, Memcached) and database (MySQL, Doris) architectures. 3. Database performance analysis and monitoring: Assist in using analysis tools to analyze slow query statements and performance bottlenecks in the database, and list improvement solutions. 4. Data organization: Processing the organization, archiving, synchronization, backup, and restoration of millions to billions of data. 5. Audit log query and analysis.