The system design is required to support 10000 users; the system design is required to be able to handle the concurrent access of about 100 users; the system design is required to support 100 users 10000 pieces of data storage capacity; the system design is required to have good performance in data security, system security, etc.; to ensure the security of system accounts and system data; to ensure the beauty and practicality of system interface design; to require the humanization of operation process design, operation simplification, accuracy and effectiveness of system prompts; to require the system design to have strong scalability, maintainability and feasibility Portability