1. MySQL: The Elephant in the Room Rob Wultsch

2. Disclaimer
This presentation is based upon the opinions and observations of Rob Wultsch and should be in no way taken as the position of any other person or company.

3. Rob Wultsch Senior MySQL DBA “Rabid Dolphin”

4. Don't hate.

5. YOUR BOSS WANTS TO FIRE YOU

6. Need a job?

7. MySQL
Not a toy.
Just a tool.

8. MyISAM... meh

9. Interesting Engines InnoDB NDB (aka MySQL Cluster) Sphinx
Tokutek, PBXT, Federated, CSV, etc

10. MySQL Advantages
Simple replication

11. MySQL Advantages
No vacuum

12. Rare statistics issues
MySQL Advantages
Rare statistics issues

13. MySQL Advantages
Covering indexes

14. Page level compression
MySQL Advantages
Page level compression

15. MySQL Advantages
Checksums

16. Secondary index buffering
MySQL Advantages
Secondary index buffering

17. MySQL Advantages
Cheap hosting

18. MySQL Advantages
Cheap connections

19. MySQL Advantages
Query cache

20. MySQL Advantages Tons of great books: MySQL Administrator's Bible
High Performance MySQL
Understanding MySQL Internals
MySQL 5.1 Plugin Development

21. Improving performance
Oracle?
Closing old bugs (see 989)
Improving performance
Useful features (see 53336)

22. In 2001 MySQL 3.23 is released InnoDB is optional
Super Ancient History
In 2001 MySQL 3.23 is released
InnoDB is optional

23. Built in replication has issues, but generally just works.
Ancient History
In 2003 MySQL 4.0 is released
Built in replication has issues, but generally just works.

24. Added stored procedures, triggers, views
History
In 2005 MySQL 5.0 is released
Added stored procedures, triggers, views
“Strict mode”

25. Present In 2008 MySQL 5.1 is released
Added partitioning, row based replication, scheduler
InnoDB is now available as a plugin
InnoDB recovery no longer sucks (5.1.46ish)

26. COMING SOON MySQL 5.5 will likely be released in late 2010
InnoDB is the default storage engine

27. COMING SOON MySQL 5.5 will likely be released in late 2010
InnoDB is faster, particularly at high concurrency.
Multiple buffer pools, rollback segments

28. COMING SOON MySQL 5.5 will likely be released in late 2010
Replication gets more resilient:
Heartbeat
Semi-Synchronous

29. COMING SOON MySQL 5.5 will likely be released in late 2010
Stored procedures get signal/resignal

30. COMING SOON MySQL 5.5 will likely be released in late 2010
Partitioning gets friendlier

31. Forks Only 1: Drizzle Under heavy development
Radical reimagining of MySQL
Major backer is Rackspace

32. Aria (crash safe MyISAM)
Patch Sets
MariaDB:
Virtual Columns
Table elimination
PBXT
Aria (crash safe MyISAM)

33. Patch Sets Percona: Limit on InnoDB data dictionary
Dump & Restore Buffer Pool
Performance
Better instrumentation

34. Patch Sets Facebook (Hi Mark and Domas): Mostly performance related
Different checksum
Make deadlock detection optional

35. Thank you