@Override
    public V put(K key, V value, long ttl, TimeUnit unit) {
        return get(putAsync(key, value, ttl, unit));
    }
@Test
    public void testSizeInMemory() {
        RMapCache<Integer, Integer> map = redisson.getMapCache("test");
        for (int i = 0; i < 10; i++) {
            map.put(i, i, 5, TimeUnit.SECONDS);
        }
        
        assertThat(map.sizeInMemory()).isGreaterThanOrEqualTo(466);
    }