50 years later, is Two-Phase Locking the best we can do?

50 years later, is Two-Phase Locking the best we can do? Two phase locking (2PL) was the first of the general-purpose Concurrency Controls to be invented which provided Serializability. In fact, 2PL gives more than Serializability, it gives Opacity, a much stronger isolation level. 2PL was published in 1976, which incidentally is the year I was born, and it is likely that Jim Gray and his buddies

[kknsd]

“Two-Phase Locking Starvation-Free (2PLSF)”