Worked on the cloudnative-pg/barman-cloud repository to enhance the reliability of WAL restore operations by addressing a critical race condition. Implemented atomic write mechanisms using temporary files and atomic renaming, ensuring that partially written WAL files are never read during parallel restores. This approach prevented invalid checkpoint record errors and improved overall data integrity during restore processes. Collaborated closely with other contributors, demonstrating strong code quality and review practices. The work primarily involved backend development and testing using Go, focusing on robust file handling and concurrency control to deliver safer and more predictable database recovery workflows within the project’s codebase.