http://short.i2p/readme.html
. ➤ Random versus sequential short URLs Out of the box, YOURLS generates sequential short URLS (ie ab31 , then ab32 and so on) If you prefer random short URLs (ie j3kz1 then 13hz7 like Bitly does), just activate the plugin that comes with YOURLS. ➤ "Stats don't update as I think they should", "difference with Google Analytics", etc... Out of the box, YOURLS updates traffic stats every time a short URL is requested.