@Override
    public long sum() {
        return get(sumAsync(60, TimeUnit.SECONDS));
    }
@Test
    public void testSum() {
        RLongAdder adder1 = redisson.getLongAdder("test1");
        RLongAdder adder2 = redisson.getLongAdder("test1");
        RLongAdder adder3 = redisson.getLongAdder("test1");
        
        adder1.add(2);
        adder2.add(4);
        adder3.add(1);
        
        Assertions.assertThat(adder1.sum()).isEqualTo(7);
        Assertions.assertThat(adder2.sum()).isEqualTo(7);
        Assertions.assertThat(adder3.sum()).isEqualTo(7);

        adder1.destroy();
        adder2.destroy();
        adder3.destroy();
    }