Optimizing TCP for high WAN throughput while preserving low latency

Cloudflare is constantly working on improving its service by monitoring and optimizing various performance metrics such as HTTP request latency and throughput. The company has addressed several issues related to TCP receive window size, buffer allocation, and collapse processing in order to provide world-class low latency while simultaneously providing high throughput over high-latency connections. By implementing a kernel patch that disables the TCP collapse logic and adjusting sysctl values, Cloudflare has achieved significant improvements in network performance for its products and services.