Firebase Storage对象的下载URL是否永久存在? [英] Do download URLs of Firebase Storage objects live forever?

问题描述

当您将文件上传到Firebase的存储中并询问对象URL时，无论您对该对象设置了什么权限，都会得到一个像http://firebasestorage.googleapis.com/v0/b/appname/o/filename?alt=media&token=somelongtoken这样的可公开访问的URL，但是令牌使它变得不可猜测. 令牌"一词表明此URL不会永远存在.是吗?

When you upload files to Firebase's Storage then ask for the object URL, you get a publicly accessible URL like http://firebasestorage.googleapis.com/v0/b/appname/o/filename?alt=media&token=somelongtoken no matter what permissions you've set on the object, but the token makes it unguessable. The word "token" suggests that this URL won't live forever. Does it?

Reference.getDownloadURL的 JavaScript参考表示: 获取此对象的长期下载URL."我不确定长寿"的含义，并且在文档的其他地方也没有看到任何详细说明.他们的示例都让客户端请求下载URL，然后将其用作临时用途，并且他们没有说是否可以将其存储以备后用.

The Javascript reference for Reference.getDownloadURL says: "Fetches a long lived download URL for this object." I'm not sure what they mean by "long-lived," and I haven't seen any elaboration on that elsewhere in the docs. Their examples all have the client request the download URL then use it for a temporary purpose, and they don't say whether it's ok to store it for later.

我还在此处有人写了一个链接缩短器的地方，建议您可以永久保留URL，因为您不会绕过临时的缩短链接.

I also see an article here where someone wrote a link shortener, suggesting you can keep the URL forever since you wouldn't pass around a shortened link that's temporary.

推荐答案

它的寿命将比您的应用程序的寿命长.实际上，它不会永远"存在，但您不必担心.

It will guaranteed live longer than your app will live. Practically speaking, it won't live "forever", but you won't have to worry about it.

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