@Autowired
    @Resource(name="redisTemplate")
    private RedisTemplate<String, String> rt;
    
    public void flushdb(){
        rt.execute(new RedisCallback<Object>() {
            public String doInRedis(RedisConnection connection) throws DataAccessException {
                connection.flushDb();
                return "ok";
            }
        });
    }
    
    public void set(){
        flushdb();
        HyperLogLogOperations<String, String> vo = rt.opsForHyperLogLog();
        vo.add("book", "a","b","c");
        vo.add("bag", "a","e","d");
        vo.add("del", "f","g","h");
        
        
        
    }
    
    public void get(){
        HyperLogLogOperations<String, String> vo = rt.opsForHyperLogLog();
        out(vo.size("book"));
        out(vo.size("bag"));
        out(vo.size("del"));
        out(vo.size("book","bag","del"));
        vo.delete("del");
        out(vo.size("book","bag","del"));
        vo.union("total", "book","bag","del");
        out(vo.size("total"));
    }
    
    public void out(String str){
        System.out.println(str);
    }
    public void out(Collection list){
        System.out.println(list);
    }
    public void out(long num){
        System.out.println(num);
    }
    public void out(boolean num){
        System.out.println(num);
    }
    public void out(DataType num){
        System.out.println(num);
    }
    public void out(Object str){
        System.out.println(str);
    }
    public void out(Set<TypedTuple<String>> set){
        for(TypedTuple<String> t : set){
            System.out.println(t.getValue()+"---"+t.getScore());
        }
    }