During March 2026, Kushal Bohra focused on backend reliability improvements for the apache/airflow repository, addressing critical issues rather than adding new features. He enhanced the robustness of token authentication by implementing a retry mechanism for user deserialization after MySQL disconnects, which prevented 500 errors following idle timeouts. Using Python and SQLAlchemy, he refactored deserialization logic to reduce code duplication and added regression tests to ensure resilience against transient failures. Additionally, Kushal improved the Databricks Operator by fixing error propagation and handling of deferrable runs, marking prematurely terminated tasks as failed. His work demonstrated depth in error handling and unit testing.