РАЗРАБОТКА МОБИЛЬНОГО ПРИЛОЖЕНИЯ ДЛЯ ЦИФРОВОЙ БИБЛИОТЕКИ С ИСПОЛЬЗОВАНИЕМ ОБЛАЧНЫХ ТЕХНОЛОГИЙ FIRESTORE

The article presents the development of a mobile application for a digital library in the Android Studio environment. The stages of system architecture design and integration of cloud technologies are considered. Functions for searching, filtering, and managing electronic books have been implemented. Key elements of the user interface ensuring intuitive interaction with the system are identified. Functional and load testing of the application was conducted. High performance and reliability of the system in processing large volumes of data were established. It was found that using the Firestore cloud database ensures fast data synchronization and user convenience. The results showed that the application can be used in educational and scientific activities to simplify access to electronic resources. Prospects for further system development, including the introduction of analytical tools and collaboration functions, are considered.