Ellie enhanced cache statistics reliability in the symfony/symfony repository by refining the CacheDataCollector to treat saveDeferred operations as write events. Using PHP and focusing on back end development, she implemented logic to ensure both explicit and implicit commit events were accurately counted as writes, thereby improving the accuracy of cache usage metrics. Ellie supported these changes with comprehensive unit testing, verifying the new behavior and ensuring robust coverage. This targeted feature work addressed a nuanced aspect of cache data collection, enabling more precise performance tuning and faster issue diagnosis for developers relying on Symfony’s caching infrastructure. No bugs were reported.