Justin Kwan is a Software Engineer at Apple. He is currently focused on building high-throughput DDoS mitigation and privacy-preserving features protecting Private Relay and iCloud edge networks. Formerly at Cloudflare, Justin focused on multitenant resource isolation, storage reliability, chaos experimentation across distributed storage infrastructure, and patching the performance of large open-source systems such as Postgres and PgBouncer. His excitement lies in high-performance systems software, distributed networking and storage, kernel-layer observability, and the intricacies of database query execution.