Google 地点 API 参考字段

Google Places API reference field

当我向 Google 地点发出 API 请求时 API 我返回的字段之一是 "reference".

API 文档中没有记录。该值看起来像一个长哈希码。

这是针对地点详细信息的版本控制吗?例如,在更改 phone 号码或名称之类的内容之前,此引用是否保持不变?

我正在寻找一种缓存结果的方法。我打算在请求日期之前执行此操作,但如果此值用于记录的版本控制,那么检查缓存将是理想的选择。

我在开发者网站上找不到任何关于它的提及,但价值似乎是一致的,所以我认为可能是这种情况。

有没有人确切知道一种方式?

来自 web service documentation(Google 地图 Javascript API v3 也是如此):

Note: The id and reference fields are deprecated as of June 24, 2014. They are replaced by the new place ID, a textual identifier that uniquely identifies a place and can be used to retrieve information about the place. The usual deprecation period of one year has been extended, as we’re looking into ways of ensuring this change will not break existing code. We’ll update this page with a final notice at least 90 days before we change the way the API handles the id and reference fields. We recommend that you update your code to use the new place ID instead of id and reference as soon as possible.