Python 同步&异步MySQL

Posted 2022-04-05 Ch4536251

同步&异步MySQL

#   mysql是许多网站都需要使用到的数据库软件，用 Python操作 MysQL数据库大部分驱动都是同步的，也就是必须等待他的返回才会往下执行，如果一个 sQL执行得比较久，
#   那么会直接卡死这个线程。因此这里我们需要选择异步的Python驱动来操作 MysQL 数据库。I
import asyncio
import aiomysql
import shortuuid
import pymysql

#   异步
#   aiomysql做数据库连接的时候，需要这个loop对象
async def async_basic(loop):
    pool = await aiomysql.create_pool(
        host="127.0.0.1",
        port=3306,
        user="root",
        password="root",
        db="dvwa",
        loop=loop
    )
    async with pool.acquire() as conn:
        async with conn.cursor() as cursor:
            for x in range(10000):
                content = shortuuid.uuid()
                sql = f"insert into guestbook(comment_id,comment,name) values(2,'asd','content)"
            #执行SQL语句
                await cursor.execute(sql)
            await conn.commit()
    #关闭连接池
    pool.close()
    await pool.wait_closed()


#同步
def sync_basic():
    conn = pymysql.connect(
        host="127.0.0.1",
        port=3306,
        user="root",
        password="root",
        db="dvwa",
        loop=loop
    )
    with conn.cursor() as cursor:
        for x in range(10000):
            content = shortuuid.uuid()
            sql = f"insert into guestbook(comment_id,comment,name) values(2,'asd','content)"
            # 执行SQL语句
            cursor.execute(sql)
        conn.commit()



if __name__ == '__main__':
    #   异步：数量大时用异步
    loop = asyncio.get_event_loop()
    loop.run_until_complete(async_basic(loop))
    #  同步：sync_basic()

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