mysql 后写入

import redis.clients.jedis.Jedis;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class WriteBehindExample {
    private static final String REDIS_HOST = "localhost";
    private static final String REDIS_PORT = "6379";
    private static final String DB_URL = "jdbc:mysql://localhost:3306/mydatabase";
    private static final String DB_USER = "user";
    private static final String DB_PASSWORD = "password";

    public static void main(String[] args) {
        Jedis jedis = new Jedis(REDIS_HOST, Integer.parseInt(REDIS_PORT));
        ExecutorService executorService = Executors.newFixedThreadPool(10);

        for (int i = 0; i < 100; i++) {
            final String key = "key" + i;
            final String value = "value" + i;
            jedis.set(key, value);
            executorService.submit(() -> writeToDatabase(key, value));
        }

        executorService.shutdown();
    }

    private static void writeToDatabase(String key, String value) {
        try (Connection conn = DriverManager.getConnection(DB_URL, DB_USER, DB_PASSWORD)) {
            String sql = "INSERT INTO mytable (key, value) VALUES (?, ?)";
            try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
                pstmt.setString(1, key);
                pstmt.setString(2, value);
                pstmt.executeUpdate();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}