云服务器做数据库对象储存

import redis
import MySQLdb

# 连接Redis
redis_client = redis.StrictRedis(host='localhost', port=6379, db=0)

# 连接MySQL
mysql_conn = MySQLdb.connect(host='localhost', user='user', passwd='password', db='mydb')
mysql_cursor = mysql_conn.cursor()

def get_user_data(user_id):
    # 先从Redis获取数据
    data = redis_client.get(f'user:{user_id}')
    if data:
        return data
    else:
        # 从MySQL获取数据
        mysql_cursor.execute("SELECT * FROM users WHERE id = %s", (user_id,))
        data = mysql_cursor.fetchone()
        # 将数据存入Redis
        redis_client.setex(f'user:{user_id}', 3600, str(data))
        return data

import psycopg2

# 连接数据库
db1_conn = psycopg2.connect(host='db1_host', dbname='db1_name', user='user', password='password')
db2_conn = psycopg2.connect(host='db2_host', dbname='db2_name', user='user', password='password')

def two_phase_commit():
    try:
        # 开始事务
        db1_conn.autocommit = False
        db2_conn.autocommit = False

        # 执行操作
        db1_cursor = db1_conn.cursor()
        db2_cursor = db2_conn.cursor()
        db1_cursor.execute("UPDATE table1 SET column1 = 'value1' WHERE id = 1")
        db2_cursor.execute("UPDATE table2 SET column2 = 'value2' WHERE id = 1")

        # 准备提交
        db1_conn.commit()
        db2_conn.commit()
    except Exception as e:
        # 回滚
        db1_conn.rollback()
        db2_conn.rollback()
        raise e