During April 2025, this developer focused on backend reliability by addressing a critical caching issue in the phalcon/cphalcon repository. They improved the caching mechanism in Phalcon\Mvc\Model\Query by ensuring that cache lifetime specified in query options consistently overrides adapter defaults, which prevents unexpected cache expirations and enhances predictability for downstream applications. Their approach included implementing regression tests to validate the new behavior and safeguard against future regressions. Working primarily with PHP and Zephir, and leveraging skills in caching and database management, they contributed to reducing cache-related support incidents and improving the overall stability of cached queries in enterprise environments.