In fact, when Facebook first debuted, random aside, ID they used I believe an int to represent your profile IDs.

在Facebook创立之初，我猜他们使用int来表示配置文件。

哈佛公开课 - 计算机科学课程节选

And this is so that they could have more possible user IDs not because they have billions and billions of users but surely people create accounts to lead accounts and they don't necessarily have to reuse numbers this way.

这样他们就能有很多的用户ID了,倒不是因为他们有成千上万的用户,而是创建账户来引导其他账户,其实他们完全没有必要以这种方式复用。

哈佛公开课 - 计算机科学课程节选

Or a thing I made before, this was a HotOrNot program out of everyone's IDs at Harvard that almost got me kicked out.

在这之前，还用每个人的ID做过一个HotOrNot网站,我因此差点被开除。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选

But if you've looked at more recent or if you've looked at friends who relatively recently signed ID up for Facebook, their profile IDs which you sometimes see in the URL are actually pretty long and that's because I believe at some point they did transition longlong to 64-bit values which tend to be called long longs.

但是如果你看过最近的【听不见】,如果你访问了最近在Facebook上留言的朋友,你会发现，可以从URL上看到他们的配置文件,很长很长，那是因为,可能在某个时间点，他们已经过渡到,64比特了，也就是所谓的。

哈佛公开课 - 计算机科学课程节选