June 2025 monthly summary: Delivered performance-focused documentation and a critical reliability fix across two repos, strengthening both performance and request handling. In kamilkisiela/graphql-hive, updated resources documentation to advise unsetting the DEBUG environment variable when debug logging is not needed, reducing CPU usage and improving overall performance. In graphql-hive/gateway, fixed GraphQL Gateway Header Propagation by ensuring only defined and non-nullish headers are forwarded between clients and subgraphs, preventing propagation of empty or undefined header values and improving request handling reliability. These changes collectively reduce operational costs, enhance user experience, and demonstrate solid cross-repo collaboration and a focus on performance and reliability.