My rand.Intn() was always returning the same value. Seem like you have to to seed it manually (once, in main() for example): rand.Seed( time.Now().UTC().UnixNan

My rand.Intn() was always returning the same value. Seem like you have to to seed it manually (once, in main() for example): rand.Seed( time.Now().UTC().UnixNano()) http://stackoverflow.com/questions/12321133/golang-random-number-generator-how-to-seed-properly http://stackoverflow.com/questions/12321133/golang-random-nu... Edit: It's in the documentation, but you have to look for it. "Seed uses the provided seed value to initialize the generator to a deterministic state. If Seed is not called, the generator behaves as if seeded by Seed(1)"