<div>you can use any arbitrary string as uuid, say</div><div><br></div><div>originate {origination_uuid=my-uuid-that-is-not-128-bit}user/1000 ….</div><div><div><br></div></div>
<p style="color: #A0A0A8;">On Monday, February 18, 2013 at 6:13 AM, Cal Leeming [Simplicity Media Ltd] wrote:</p>
<blockquote type="cite" style="border-left-style:solid;border-width:1px;margin-left:0px;padding-left:10px;">
<span><div><div><div>Thanks for the feedback Steve, </div><div><br></div>In ref to auto inc, actually, I have! :) In the code on the blog, it shows that the tables uses a BIGINT auto increment for each row, and the performance was still good. However, using this approach introduces an unnecessary JOIN and uses more index and table space - unless I've missed something?<div>
<div><br></div><div>Could you elaborate more on the UUIDs that may not be 128-bit? My google-fu failed me :/</div><div><br></div><div>Cal<br><div><div><br><div>On Sun, Feb 17, 2013 at 9:11 PM, Steven Ayre <span dir="ltr"><<a href="mailto:steveayre@gmail.com" target="_blank">steveayre@gmail.com</a>></span> wrote:<br><blockquote type="cite"><div>Another possibility you haven't looked at is having a table of UUIDs with a BIGINT auto_increment PK and using that as keys in other takes with a foreign key relationship (whether defined or implied). That would give you a smaller integer (hence faster select/insert/join/etc) that's still guaranteed to be unique. Though the auto_increment INSERT could then become a bottleneck (hint run a recent 5.5/5.6 MySQL version at the very least since that bottleneck while still present was very much reduced).<div>
<br><div>-Steve<div><br></div><div><br><br><div><div>On 17 February 2013 20:55, Cal Leeming [Simplicity Media Ltd] <span dir="ltr"><<a href="mailto:cal.leeming@simplicitymedialtd.co.uk" target="_blank">cal.leeming@simplicitymedialtd.co.uk</a>></span> wrote:<br>
</div><blockquote type="cite"><div><div><div>Hi all,<div><div><br></div><div>Just spent a little while comparing the performance of heavy INSERT/SELECT performance against UUID fields in a MySQL database.</div>
</div><div><br></div><div>Full performance breakdown and write up can be found here;</div>
<div><a href="http://blog.simplicitymedialtd.co.uk/?p=437" target="_blank">http://blog.simplicitymedialtd.co.uk/?p=437</a></div><div><br></div><div>So far, the best option seems to be storing the UUID as a BINARY(16) - anyone have any thoughts on this?</div>
<div><br></div><div>Thanks</div><span><font color="#888888"><div><br>Cal</div>
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