Show GN: StreamSheet - 대용량 엑셀 내보내기를 위한 Kotlin/Spring Boot 라이브러리

StreamSheet addresses a critical pain point in enterprise applications: OutOfMemory errors when exporting large datasets to Excel. By leveraging streaming architecture with JPA, JDBC, and MongoDB cursors, it enables stable processing of 1M+ row exports without OOM failures, while reducing boilerplate through simple annotation-based column mapping. For organizations handling high-volume data export requirements, this library significantly improves both developer productivity and system reliability.