Java 및 Redis를 사용하여 소셜 미디어 앱 구축: 대량의 사용자 데이터를 처리하는 방법

// 定义用户信息的Key前缀
private static final String USER_PREFIX = "user:";

// 存储用户信息
public void registerUser(User user) {
    Jedis jedis = null;
    try {
        jedis = getJedis();
        String key = USER_PREFIX + user.getId();
        jedis.hset(key, "name", user.getName());
        jedis.hset(key, "age", String.valueOf(user.getAge()));
        jedis.hset(key, "location", user.getLocation());
    } finally {
        if (jedis != null) {
            jedis.close();
        }
    }
}

// 获取用户信息
public User getUser(String userId) {
    Jedis jedis = null;
    try {
        jedis = getJedis();
        String key = USER_PREFIX + userId;
        Map<String, String> userInfo = jedis.hgetAll(key);
        User user = new User();
        user.setId(userId);
        user.setName(userInfo.get("name"));
        user.setAge(Integer.parseInt(userInfo.get("age")));
        user.setLocation(userInfo.get("location"));
        return user;
    } finally {
        if (jedis != null) {
            jedis.close();
        }
    }
}

// 定义关注关系的Key前缀
private static final String FOLLOW_PREFIX = "follow:";

// 关注用户
public void followUser(String userId, String followUserId) {
    Jedis jedis = null;
    try {
        jedis = getJedis();
        String key = FOLLOW_PREFIX + userId;
        jedis.sadd(key, followUserId);
    } finally {
        if (jedis != null) {
            jedis.close();
        }
    }
}

// 获取关注的用户列表
public List<String> getFollowUsers(String userId) {
    Jedis jedis = null;
    try {
        jedis = getJedis();
        String key = FOLLOW_PREFIX + userId;
        return new ArrayList<>(jedis.smembers(key));
    } finally {
        if (jedis != null) {
            jedis.close();
        }
    }
}