Question: Best practice for creating the dynamo table

Hello and thanks for the sample app!

I see that in this project there is an endpoint triggered from a POST request, that attempts to create the dynamodb table. I realize this is just a sample project but I was expecting the table definition to be in the template.yaml file instead of java code and now I wonder if there was a reason for the author to do it this way instead

首先阅读 template.yaml 以及创建 DynamoDB 表的 POST 端点背后的 Java 代码。比较这两种方法，并记录作者的理由或预期的最佳实践。当问题得到清晰回答，并且任何相关指导都已记录在示例项目中时，即视为完成。

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