Firestore 是否在离线 30 分钟以上时向我们收费? [英] Is Firestore charging us when offline more than 30 minutes?

问题描述

我读了这个答案，Doug Stevenson(Firebase 工程师)说:

I read this answer, where Doug Stevenson (Firebase engineer) said:

缓存文档读取不收费.

但我阅读了文档:

此外，如果侦听器断开连接的时间超过 30 分钟(例如，如果用户下线)，您将被收取读取费用，就像您发布了一个全新的查询一样.

Also, if the listener is disconnected for more than 30 minutes (for example, if the user goes offline), you will be charged for reads as if you had issued a brand-new query.

所以如果我离线，即使我没有更改任何文档，我是否会再次收费?那么已经缓存的数据，30分钟后就不再考虑缓存数据了吗?

So if I'm going offline, even if I haven't changed any document, am I charged again? So the data that is already cached, isn't consider a cached data after 30 minutes anymore?

希望有人能帮助我解决这个烦人的情况.提前致谢！

Hope someone can help me about this annoying situation. Thanks in advance!

推荐答案

如果缓存可以满足重新连接的查询，那么对于每个缓存的文档仍然没有读取费用.您仍需为查询本身支付单次读取费用，即使它返回的结果没有比缓存中的新结果还新.

If the cache can satisfy the reconnected query, then there are still no reads charged for each cached document. You are still charged a single read for the query itself, even if it returns no new results that are newer than what's in the cache.

最低查询费用

对于您提出的每个查询，阅读一份文档的最低费用是执行，即使查询没有返回结果.

There is a minimum charge of one document read for each query that you perform, even if the query returns no results.

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