Albin enhanced HTTP cache reliability for high-concurrency deployments in the symfony/symfony and symfony/http-kernel repositories. He focused on ensuring correct boot and termination behavior in worker-mode kernels, updating the booting logic so the HTTP cache is properly utilized after the kernel starts. Using PHP and Symfony, Albin implemented and validated these changes with targeted tests, confirming that the cache could handle requests post-boot. His work addressed nuanced backend challenges in cache consistency and concurrency, demonstrating a deep understanding of Symfony’s internals. Over the month, Albin delivered two features that improved backend robustness without introducing regressions or requiring bug fixes.