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POMigrating from Mysql to Cassandra
 

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    <p>Previously I was using the class found <a href="http://kevin.vanzonneveld.net/techblog/article/create_short_ids_with_php_like_youtube_or_tinyurl/" rel="nofollow">here</a> to convert userID to some random string.</p> <p>From his blog:</p> <p>Running:</p> <pre><code>alphaID(9007199254740989); </code></pre> <p>will return 'PpQXn7COf' and:</p> <pre><code>alphaID('PpQXn7COf', true); </code></pre> <p>will return '9007199254740989'</p> <p>So the idea was that users could do www.mysite.com/user/PpQXn7COf and i convert that to a normal integer so i could do in mysql </p> <pre><code>"Select * from Users where userID=".alphaID('PpQXn7COf', true) </code></pre> <p>Now i'm just started working with Cassandra an i'm looking for some replacement.</p> <ol> <li>I want url like www.mysite.com/user/PpQXn7COf not like www.mysite.com/user/username1</li> <li>The "PpQXn7COf" uuid must be as short as possible.</li> </ol> <p>In the Twissandra example explained here: <a href="http://www.rackspace.com/cloud/blog/2010/05/12/cassandra-by-example/" rel="nofollow">http://www.rackspace.com/cloud/blog/2010/05/12/cassandra-by-example/</a></p> <p>They create some long uuid (i guess it is so long because then its almost 100 percent sure its random).</p> <p>In mysql i just had a userID column with auto increasement so when i used the alphaID() function i always got a very short random string.</p> <p>Anyone an idea how to solve this as clean as possible?</p> <hr> <p><strong>Edit:</strong></p> <p>It is used for a social media site so it must be persistent. Thats also why i don't want to use usernames/realnames in urls, user cant remain google undetected if they need.</p> <p>I just got a simple idea, however i don't know how scalable it is</p> <pre><code>&lt;?php //createUUID() makes +- 14 char string with A-Z a-z 1-0 based on micro/milli/nanoseconds while(get_count(createUUID()) &gt; 0){//uuid is unique //insert username pass, uuid etc into cassandra if($result == "1"){ header('Location: http://www.mysite.com/usercenter'); }else{ echo "error"; } } ?&gt; </code></pre> <p>When this gets the size of lets say twitter/facebook:</p> <ol> <li>Will it execute in acceptable time?</li> <li>Will it still generate unique uuid fast enough so if 10000 users/second are registering it isnt cluttering up?</li> </ol>
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