Worked on the omarmohammad2002/FinalProject-22-3ateya-and-Co repository, focusing on refactoring the audio system to improve performance and maintainability. The approach involved reordering the upload and delete methods within the AudioController and cleaning up configuration details to streamline the codebase. Redis caching was enhanced by setting a 90-second time-to-live and disabling the caching of null values, which improved cache reliability and reduced unnecessary writes. Additionally, commented-out RabbitMQ queue and routing key definitions were removed to simplify configuration and minimize potential misconfigurations. The work utilized Java, Spring Boot, and Redis, emphasizing backend development best practices throughout the process.