redis/internal/internal.go

23 lines
350 B
Go

package internal
import (
"time"
"golang.org/x/exp/rand"
)
func RetryBackoff(retry int, minBackoff, maxBackoff time.Duration) time.Duration {
if retry < 0 {
panic("not reached")
}
d := minBackoff << uint(retry)
d = minBackoff + time.Duration(rand.Int63n(int64(d)))
if d > maxBackoff || d < minBackoff {
d = maxBackoff
}
return d
}