random

Source of randomness for the election-timeout draw. Randomness is a dependency, like time: under virtual time a kotlinx.coroutines.test.TestDispatcher makes scheduling deterministic, but an unseeded RNG still injects non-determinism into the durations the engine waits. Production default is Random.Default. Tests that run under virtual time should inject a seeded Random(<fixed seed>) so every run draws identical election timeouts — making the whole engine deterministic. Multi-node tests must use distinct seeds per node so nodes draw different timeouts and symmetry-break into a leader; use MultiNodeRaftSim from :kuilt-raft-test which handles this automatically. NEVER seed in production: a fixed seed defeats the split-vote avoidance that timeout randomisation exists for.