Download - Shinier Dolphin
A Shinier DolphinBaron Schwartz
Me
✤ Cofounder of @VividCortex
✤ Author of High Performance MySQL
✤ I love hearing from people just like you:
✤ @xaprb on Twitter
✤ http://www.linkedin.com/in/xaprb
Optimization, Backups, Replication, and more
Baron Schwartz, Peter Zaitsev &
Vadim Tkachenko
High PerformanceMySQL
3rd Edition
Covers Version 5.5
VividCortex
✤ What do you do with a query that will run for 7000 years?
What’s New with MySQL?
What’s New with MySQL?
What’s New with MySQL?
What’s New with MySQL?
What’s New with MySQL?
Unavoidable Politics
Major Community Developments
✤ Replication/Clustering: Galera, Continuent
✤ Storage: TokuDB, Akiban
✤ Sharding: Clustrix, ScaleArc, ScaleBase, ParElastic
✤ Backup: Percona XtraBackup
✤ Services & Support: Percona, SkySQL
✤ Tools: MySQL Workbench, MySQL Utilities, Percona Toolkit
Don’t Be A Zombie
MySQL 5.1 is officially undead now. Don’t use it.
Obligatory Biblical Quote
When the wicked, even mine enemies and my foes, cameupon me to eat up my flesh, they stumbled and fell.
- Psalm 27:2
MySQL 5.5
✤ MySQL 5.5 is old news now.
✤ Thread pooling, auditing, pluggable authentication, multicore performance, instrumentation, InnoDB, InnoDB, InnoDB, semisync replication, partitioning, metadata locking, etc etc.
MySQL 5.6
✤ I expect MySQL 5.6 to be GA within months
✤ There’s a very long list of features and changes in 5.6
✤ It is going to be a huge step forward
MySQL 5.6 Overview
✤ Faster queries
✤ Better scalability on multicore hardware
✤ More reliable, efficient, and user-friendly replication
✤ Instrumentation and tracing to measure behavior and performance
✤ Easier and more reliable failover for high availability
Query Optimizations
Query Optimizations
✤ Subquery and “derived table” improvements
✤ Improvements for SELECT .. ORDER BY .. LIMIT
✤ Reductions to random I/O (MRR, BKA)
✤ Index condition pushdown
✤ Removal of “leftmost prefix” limitation
✤ EXPLAIN for UPDATE etc; JSON EXPLAIN; optimizer trace
Data Types
Data Types
✤ Microsecond precision for timestamp / datetime types
✤ No more hardcoded magic for timestamps
Security
Security
✤ More password hash choices
✤ Password expiration and policy enforcement
InnoDB
InnoDB
✤ Full-text search
✤ Online ALTER TABLE
✤ Performance & scalability
✤ Split kernel mutex - multiple purge threads - adaptive flushing
✤ Fast warmup - compression - data/log file placement - persistent statistics - limits on data dictionary size - import & export
Partitioning
Partitioning
✤ Promote/demote partitions and tables
✤ Limit queries to specified partitions
Performance Schema
Performance Schema
✤ Many more tables that are useful for DBAs
✤ Statement digests in particular
✤ Also, per-table, per-index, per-user, etc statistics
✤ Lower overhead
✤ More configurable
Replication
Replication
✤ Global transaction ID
✤ Binary log group commit
✤ Replication can be multi-threaded
✤ Binary log events are checksummed
✤ Replication is transactional and crash-safe
✤ Easy streaming binary log backups
NoSQL Access
NoSQL Access
✤ Access InnoDB directly via memcached protocol
✤ Bypass the parser, optimizer, etc
✤ The speed of memcached—but it’s ACID compliant
✤ And automatically consistent; no stale data
Lots and lots more
✤ Stored procedure improvements; a debugger for .NET
✤ Improved installers for Windows
✤ Host cache is no longer invisible; table cache is partitioned
✤ Read http://dev.mysql.com/doc/refman/5.6/en/mysql-nutshell.html but get a cup of coffee first.
Conclusions
✤ The MySQL community/ecosystem is thriving
✤ MySQL 5.5 was the best release in its history
✤ MySQL 5.6 is going to change the MySQL world in a big way
✤ MySQL is alive and well under Oracle’s ownership
Image Credits
✤ http://www.flickr.com/photos/m-louis/1482868533/
✤ http://www.flickr.com/photos/scottfeldstein/2428967207/
✤ http://www.flickr.com/photos/jdhancock/4252667795/
✤ http://www.flickr.com/photos/aunto/292238140/
✤ http://www.flickr.com/photos/uggboy/5927527168/
✤ http://www.flickr.com/photos/addedentry/3273096118/
✤ http://www.flickr.com/photos/telemax/4704175548/
✤ http://www.flickr.com/photos/notsogoodphotography/3058866282/
✤ http://www.flickr.com/photos/mcgraths/866572532/
