package internal import ( "context" "time" "github.com/go-redis/redis/v9/internal/util" ) func Sleep(ctx context.Context, dur time.Duration) error { t := time.NewTimer(dur) defer t.Stop() select { case <-t.C: return nil case <-ctx.Done(): return ctx.Err() } } func ToLower(s string) string { if isLower(s) { return s } b := make([]byte, len(s)) for i := range b { c := s[i] if c >= 'A' && c <= 'Z' { c += 'a' - 'A' } b[i] = c } return util.BytesToString(b) } func isLower(s string) bool { for i := 0; i < len(s); i++ { c := s[i] if c >= 'A' && c <= 'Z' { return false } } return true }