Simulated and logical time

An event queue in place of a wall clock, and the clocks peers can build from their messages alone.

Discrete-event simulation: a network on an event queue (GPSS 1961, Simula 1965)

Discrete-event simulation: a network on an event queue (GPSS 1961, Simula 1965)

Lamport clocks: ordering events without a shared clock (Lamport 1978)

Lamport clocks: ordering events without a shared clock (Lamport 1978)

Vector clocks: detecting concurrency (Fidge and Mattern 1988)

Vector clocks: detecting concurrency (Fidge and Mattern 1988)