In October 2025, Alex focused on optimizing Garnet’s size parsing utilities by refactoring the ParseSize and PrettySize methods. He replaced char arrays with ReadOnlySpan<char> in these C# methods to reduce temporary memory allocations and improve throughput, directly addressing performance bottlenecks in hot-path code. This change preserved all existing functional behavior and API compatibility, ensuring no disruption for users. Alex’s work in the microsoft/garnet repository demonstrated careful attention to memory management and performance optimization, leveraging his skills in code refactoring and utility method design. The targeted update laid groundwork for further improvements in memory efficiency within the codebase.