Understanding Deadlocks in Transactions

Your app just froze? It might be in a digital standoff called a deadlock. In databases,

everything happens in "transactions," which are all-or-nothing jobs. Think of a bank

transfer: the money either moves completely, or the whole thing is cancelled. But when multiple

transactions run at once, things get messy. Imagine Transaction 1 locks your profile

and needs your order history. At the same time, Transaction 2 locks your order history

and needs your profile. They're both stuck, waiting for each other forever. To break the stalemate,

the system has to kill one transaction so the other can proceed.