这是一个创建于 2591 天前的主题，其中的信息可能已经有所发展或是发生改变。
https://hashids.org/
Hashids is a small open-source library that generates short, unique, non-sequential ids from numbers.
It converts numbers like 347 into strings like “ yr8 ”, or array of numbers like [27, 986] into “ 3kTMd ”.
You can also decode those ids back. This is useful in bundling several parameters into one or simply using them as short UIDs.
比如字符串长度设置 4-6 位，等用户量大了接近 4-6 位字符能表示的用户量时, 会不会出现重复的。
Hashids is a small open-source library that generates short, unique, non-sequential ids from numbers.
It converts numbers like 347 into strings like “ yr8 ”, or array of numbers like [27, 986] into “ 3kTMd ”.
You can also decode those ids back. This is useful in bundling several parameters into one or simply using them as short UIDs.
比如字符串长度设置 4-6 位，等用户量大了接近 4-6 位字符能表示的用户量时, 会不会出现重复的。
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jifengg 2018 年 12 月 19 日
如果区分大小写，26 个字母+10 个数字，6 位可以有 (26+26+10)^6=56800235584，568 亿个不重复的字符串。
但是位数少了有一个问题就是重复率会增加，需要排重的时间会增加。可以的情况下，位数尽可能多一些。 |
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trowa8509 2018 年 12 月 21 日
用 JWT 吧。
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