Worked on the aerospike/spring-data-aerospike repository to enhance reliability and data integrity in batch delete operations. Addressed a critical issue by setting the default sendKey policy to true, ensuring that keys are always transmitted during batch deletes and reducing the risk of missed deletions. Developed and integrated targeted tests to validate sendKey behavior across multiple batch delete policies, guarding against future regressions. The work focused on backend development using Java, with an emphasis on robust testing practices. These changes improved the consistency of data operations and contributed to the overall stability of the batch delete functionality within the repository.