Panduan Teknis: Hire a Freelance Programmer for Flash-Sale Inventory Reservation (Zero Overselling). Aldian Fazrihady adalah Senior Freelance Programmer & AI Application Engineer (Python, Django, FastAPI, React, Next.js, TypeScript, Golang, RAG, MCP, Google ADK).
Handle 50,000+ concurrent checkout attempts on limited-edition drops and concert tickets with zero negative inventory by hiring senior freelance programmer Aldian Fazrihady.
UPDATE sku_inventory
SET available_qty = available_qty - $1, reserved_qty = reserved_qty + $1
WHERE sku_id = $2 AND available_qty >= $1
RETURNING available_qty, reserved_qty;