• 🐘 PostgreSQL / Greenplum Kernel Engineer, daily hacking on the Planner, ORCA, Executor, and Storage in WarehousePG
• 🤩 Love using diagrams to visualize the elegant designs of the computer world — Psyduck —— Psyduck
• 👻 "Know not just the 'what', but the 'why'" — reading source code, firing up gdb / rr, and digging into the rabbit hole
• ✍️ Writing deep dives into Postgres / Greenplum internals at 知其然, 知其所以然