Worked on the dart-lang/sdk repository to address a backend caching issue in May 2026, focusing on the EvictingFileByteStore component. Using Dart and backend development skills, resolved a bug that caused cache size counters to drift after file deletions, which previously led to inconsistencies in memory management. The solution involved aligning the bookkeeping logic with the cleanup process to ensure accurate cache size tracking, thereby improving the stability and reliability of the SDK’s file-system caches. This targeted fix enhanced analyzer performance by preventing cache accounting errors, contributing to more predictable and efficient resource usage within the Dart SDK’s infrastructure.