Managing User Data with Expiration in Redis Using Java and Jedis

import redis.clients.jedis.Jedis;
import com.google.gson.Gson;
import java.time.Duration;

public class Main {
    private static final Gson gson = new Gson();

    public static void main(String[] args) {
        // Connect to Redis
        try (Jedis jedis = new Jedis("localhost", 6379)) {
            // Add and retrieve user data
            UserData userData = new UserData("Alice", 30, "alice@example.com");
            addUser(jedis, 1, userData);
            UserData retrievedUser = getUser(jedis, 1);
            System.out.println("User 1: " + retrievedUser);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    // Function to add user data with expiration
    public static void addUser(Jedis jedis, int userId, UserData data) {
        String key = "user:" + userId;
        String jsonData = gson.toJson(data);
        jedis.setex(key, (int) Duration.ofDays(1).getSeconds(), jsonData);
    }

    // Function to retrieve user data
    public static UserData getUser(Jedis jedis, int userId) {
        String key = "user:" + userId;
        String jsonData = jedis.get(key);
        return jsonData != null ? gson.fromJson(jsonData, UserData.class) : null;
    }
}

public class UserData {
    private String name;
    private int age;
    private String email;

    public UserData(String name, int age, String email) {
        this.name = name;
        this.age = age;
        this.email = email;
    }

    @Override
    public String toString() {
        return "UserData{name='" + name + "', age=" + age + ", email='" + email + "'}";
    }
}