2008 MySQL Conference Recap

MySQL Conference 2008 Edition Chris Barber http://www.cb1inc.com

Who, What, When? ● April 14-17, 2008 ● Santa Clara, CA ● Over 2000 people (more than last year) ● 160 speakers ● 16 tutorials ● 128 sessions

What's New? ● Sun ● MySQL 5.1 GA (still) ● MySQL Workbench GA – Windows only right now ● Hot backup extension http://www.theopenforce.com/2008/04/burning-the- boa.html ● Monty's talk: – http://monty-says.blogspot.com/2008/04/mysql- conference-good-bad-and-ugly.html – http://www.scribd.com/doc/2575733/The-future-of- MySQL-The-Project

memcached ● Memcached storage engine ● Memcached functions for MySQL – SELECT memc_set('fruit', 'apple'); – SELECT memc_get('fruit');

Testing ● DBUnit for database - http://www.dbunit.org – PHPUnit for PHP - http://phpunit.de – phpUnderControl - http://www.phpundercontrol.org v

EC2 ● New! Persistent storage ● Storage caching mysteries ● High availability is difficult – Can't do heartbeat ● Previous machine's host remnants – Need to zero out drive... can take 5 hours!

Gearman ● Server daemon than can do back-end stuff ● http://www.danga.com/gearman/ – From the people that made memcached ● netgearman – PHP library for Gearman – http://code.google.com/p/netgearman/

Query Cache ● Only SELECT statements ● Viewing cache statistics: – SHOW GLOBAL STATUS LIKE 'qcache%'; – SHOW GLOBAL STATUS LIKE 'query_cache%'; ● 16MB by default ● Invalidates easily ● Can become fragmented

LVM Snapshots for Backups ● Linux ● mylvmbackup ● Procedure – http://lenz.homelinux. org/mylvmbackup/ – flush tables – flush tables with read lock – Perl script – lvcreate -s – show master/slave status – unlock tables – mount snapshot, perform backup – unmount and discard the snapshot

innodb ● Google actively improving it – Updated mutex code (CAS instead of mutex) ● New release! 1.0! – Data compression – Fast index creation – information_schema tables

Flickr Stats – Massive Inserts ● Tracks images ● HTTP_REFERRER ● Custom Java daemon to pool, bulk insert

Hardware Stuff ● Use 64-bit ● Storage ● Use lots of RAM – SAN, DAS, NAS – 32GB is cheap – Independent storage – Allocate all RAM to – RAID 10 innodb except 2GB – SAS vs. SATA ● 2 x dual core or 1 x – Battery backed cache quad core ● Write through vs. write back

Hardware Stuff ● Violin Memory ● Kickfire ● 500GB RAM Drive ● Database appliance ● PCI-Express ● SQL chip ● Linux support ● Custom storage engine ● 84 x 6GB sticks ● Transparent http://www.flickr.com/photos/fallenpegasus/2424290836/

Scaling MySQL: Up or Out? ● MySQL, Sun, Flickr, FotoLog, Wikipedia, Facebook, YouTube ● Facebook has over 1800 MySQL servers! http://www.flickr.com/photos/x180/2419466880/

Other stuff ● High Availability – DRBD ● information_schema – Alternative to MySQL's SHOW command – Make plugins ● PrimeBase – PBXT Storage Engine ● High Performance MySQL – June 19, 2008

Questions? Thank you!

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2008 MySQL Conference Recap

by Chris Barber on May 13, 2008

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2008 MySQL Conference Recap — Presentation Transcript