Hello, everyone. I"ve been looking at connection pooling recently, and then I used python"s dbutils. Here"s a problem. Connection pooling is to keep the connection all the time, in order to speed up, but some online tutorials still cursor.close () conn.close () after using commit each time. What on earth are these two close shutting down? is it to disconnect the user from the mysql, or just to release the current connection in the connection pool for other users to use again? No, whether close is OK or not. I don"t have a clear understanding of this area. I hope I can correct it. Thank you