谷歌应用程序引擎中的db和ndb的优缺点 [英] pros and cons of db and ndb in google app engine

问题描述

我在堆栈溢出中看到了这一点，但是我想知道是否有任何理由使用DB实体模型，以及使用哪个或哪些的具体优缺点。

我已经读过ndb，它有点快，它有助于缓存。他们在文档中有很多信息，但并不直接说ndb更好。至少我还没有找到。

解决方案

据我可以告诉ndb是db的进化，保持独立以保持兼容性。

看看小抄，详细介绍主要区别

https://docs.google.com/document/d/1AefylbadN456_Z7BZOpZEXDq8cR8LYu7QgI7bt5V0Iw/mobilebasic

但它没有提及其他特性，例如计算属性。

如果您正在开始一个新项目，我看不到不要使用ndb和任何理由。

编辑：文档的Alt链接： https://docs.google.com/document/d/1AefylbadN456_Z7BZOpZEXDq8cR8LYu7QgI7bt5V0Iw/edit#

I have seen a little of this in stack overflow but I am wondering if there is any reason to use the DB entity model and what the specific pros and cons of using on or the other are.

I have read the ndb is a little faster and that it helps with caching. They have a good bit of info in the docs but don't really straight out say that ndb is better. At least I haven't found that yet.

解决方案

As far as I can tell ndb is an evolution of db, kept seperate to maintain compatability.

Have a look at the cheat sheet, it details the main differences

https://docs.google.com/document/d/1AefylbadN456_Z7BZOpZEXDq8cR8LYu7QgI7bt5V0Iw/mobilebasic

But it does not mention the other features such as computed properties.

If you are starting a new project I see no reason not to use ndb and every reason to.

EDIT: Alt link for document: https://docs.google.com/document/d/1AefylbadN456_Z7BZOpZEXDq8cR8LYu7QgI7bt5V0Iw/edit#

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