Deadlock And Bad Users

Learn about deadlock, competitive intelligence companies, leeches that invade your system, parasitic industry, and redirecting robots.

How deadlock occurs

Imagine 100,000 transactions all trying to update the same row of the same table in the same database. Somebody is bound to get deadlocked. Once a single transaction with a lock on the user’s profile gets hung (because of the need for a connection from a ...