Worked on stabilizing the in-memory components of the linkedin/ambry repository, focusing on backend reliability using Java and unit testing. Addressed a critical issue in the InMemNamedBlobDb by correcting missing return statements in two methods, which previously risked incomplete futures and index-out-of-bounds errors during runtime. The solution involved implementing precise code changes and augmenting the test suite to prevent similar regressions, thereby improving overall system robustness. No new features were introduced during this period, as the primary goal was to enhance maintainability and reduce operational risk through targeted bug fixes and comprehensive documentation of the changes made.