// variables
    private static Object staticLock = new Object();
    private static JedisPool pool;
    private JedisPoolConfig jpc;

// methods
private void setupRedis() {
        JedisPoolConfig jd = new JedisPoolConfig();
        jd.setMaxWaitMillis(1000L);
        jd.setMinIdle(5);
        jd.setTestOnBorrow(true);
        jd.setMaxTotal(20);
        jd.setBlockWhenExhausted(true);
        this.jpc = jd;
    }
    public JedisPool getPool() {
        if (pool == null) {
            synchronized(staticLock) {
                if (pool == null) {
                    pool = new JedisPool(this.jpc,this.address,this.port);
                }
            }
        }
        return pool;
    }