A Working DBA Team Lead’s Design for Concurrent Inventory Decrements — How to Keep the Database Running Under Event Traffic

See firsthand where the database gets bottlenecked by first-come, first-served coupons and inventory deductions, using lock waits, hot rows, history list length, and connection counts. From conditional UPDATEs, unique keys, and SKIP LOCKED to counter sharding and Redis-based decisions, this hands-on course by a practicing DBA team lead uses Docker-based scenarios to demonstrate the impact of design changes.