This network diagram provides a detailed illustration of the connection relationships among key network components, including Interface CouchDB, TEST/DEV-DB, and Local Mock-DB. Interface CouchDB acts as a middleware interface effectively bridging data exchange between frontend applications and backend databases. TEST/DEV-DB denotes the database server used in testing and development environments, supporting debugging and functional testing of application development. Meanwhile, Local Mock-DB serves as a simulated database for local testing during the development phase, ensuring application development and testing can proceed without connecting to an actual database. The orderly connections of these components ensure data consistency and smooth processes during development, enhancing development efficiency and system stability.