问题描述
我一直想知道网址多么渺小的工作。
I have been wondering how tiny url works.
我想开发我的网站类似的东西，但由于大多数人来说，我使用的GUID的标识。当创建一个对象，我应该然后生成一个10个字符的随机字符串作为公共标识的使用，或者是有一个更聪明的方法呢？
I would like to develop something similar for my site, but as most people, I use GUIDs for ids. When an object is created, should I then generate a 10 character random string to use as public id, or is there a smarter approach?
旧的URL的例子：www.mysite.com/default.aspx?userId={id}
Example of old url: www.mysite.com/default.aspx?userId={id}
新的URL的例子：www.mysite.com/pwzd4r9niy
Example of new url: www.mysite.com/pwzd4r9niy
推荐答案
您可以使用任何类型的随机字符串发生器或GUID这个的。我不认为这是一个更聪明的方法。 （真知晶球提供了一个不错的选择，虽然，散列传入的URL）。
You can use any kind of random string generator or GUID for this. I don't think there is a much smarter approach. (Palantir offers a nice alternative though, hashing the incoming URL. )
剩下的就是相对简单：保持数据库表ID和目标URL;当一个请求时，查找ID，做一个头重定向到目标URL。
The rest is relatively straightforward: Keep a database table with IDs and target URLs; When a request comes in, look up the ID and do a header redirect to the target URL.
更多讨论href=\"http://www.codinghorror.com/blog/2007/08/url-shortening-hashes-in-practice.html\">这个博客帖子。
More discussion in this blog post.
也有重定向服务，在那里，现在使用的话，从字典列表创建一个URL。
There also are redirection services out there now that use words from a dictionary list to build a URL.
不幸的是，EvilURL不见了！它用来建立短网址
Sadly, EvilURL is gone! It used to create "short" URLs like
http://evilURL.com/donkey_porn-shotguns/cracking-virus-exploit
这是唯一的URL重定向服务的真正的值得的。 ：）
that was the only URL redirection service really worthwhile. :)
而且，作为一个有点琐事，是最短人类已知的重定向服务（和，我想在最短的网页URL）。
And, as a bit of trivia, http://to is the shortest redirection service (and, I think the shortest web URL) known to man.
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