Shanhao worked on optimizing binary response payloads in the prestodb/presto repository, focusing on backend development and data processing using Java. During the month, Shanhao addressed a bug that caused uninitialized bytes to be included in binary result arrays, which previously led to unnecessarily large payloads and inefficient data handling. By removing these extraneous bytes and updating the encoding path to use Guava’s BaseEncoding instead of Java’s standard Base64 encoder, Shanhao improved both network efficiency and result streaming for large datasets. The work was thoroughly documented, with changes prepared for release and linked to relevant commits and differential revisions for traceability.