Artahir enhanced server-side rendering language redirects in the angular/angular-cli repository, focusing on multilingual site reliability and caching accuracy. He implemented a forwarded prefix mechanism in Angular’s SSR redirect flow, ensuring that user language preferences are preserved in redirected paths. By updating the Vary header to include X-Forwarded-Prefix, Artahir improved caching correctness across proxies and CDNs, reducing misrouting and supporting more accurate content delivery. This work, developed using Angular and TypeScript, addressed the complexities of accept-language redirects and forward-prefix semantics, demonstrating a thoughtful approach to web development challenges in internationalized environments. The feature was tracked in a single, targeted commit.