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{
    String host = "127.0.0.1";
    int port = 6389;
    jedis = new Jedis(host, port);
}

public String get(String key) {
    return jedis.get(key);
}

public void set(String key, String value) {
    jedis.set(key, value);
}

private JRedisUtil() {
}

public static JRedisUtil getInstance() {
    return instance;
}

public static void main(String[] args) {
    JRedisUtil util = JRedisUtil.getInstance();
    long i = 1;
    long start = System.currentTimeMillis();
    for(i=1;;i++) {
        String value = util.get("abc");
        System.out.println(value);
        long end = System.currentTimeMillis();
        long interval = end - start;
        if(interval >= 1000) {
            break;
        }
    }
    System.out.println("Done!");
    System.out.println("i = " + i);
    // total: 7787 7960 8452 6974 6907 6748 8017 8164 8272 8266 // 共测试10次
    //   avg: 7754.7 // 平均每秒生成id数
}

127.0.0.1:6379> del a
(integer) 1

127.0.0.1:6389> del abc
OK

Traceback (most recent call last):
  File "./idgo_concurrent_test.py", line 82, in <module>
    r.delete("id_test")
  File "/usr/lib/python2.7/dist-packages/redis/client.py", line 841, in delete
    return self.execute_command('DEL', *names)
  File "/usr/lib/python2.7/dist-packages/redis/client.py", line 573, in execute_command
    return self.parse_response(connection, command_name, **options)
  File "/usr/lib/python2.7/dist-packages/redis/client.py", line 587, in parse_response
    return self.response_callbacks[command_name](response, **options)
ValueError: invalid literal for int() with base 10: 'OK'