What's new in MySQL 5.5? FOSDEM 2011
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MySQL 5.5 introduces InnoDB as the default storage engine, offering improved performance, scalability, and manageability. Key features include better instrumentation, semi-synchronous replication, and enhanced logging abilities. Users can download the new version and engage with the community for feedback and support.
What's new in MySQL 5.5? FOSDEM 2011
- 2. <Insert Picture Here> What's new in MySQL 5.5? Lenz Grimmer MySQL Community Relations Specialist
- 3. MySQL 5.5 Highlights • InnoDB becomes the default • Improved Performance & Scalability • Improved Availability • Improved Manageability & Usability • Improved Instrumentation & Diagnostics
- 4. InnoDB 1.1 as Default Storage Engine • ACID Transactions, Foreign Keys, Crash Recovery • Plugin replaces built-in version • Newly created tables use InnoDB by default • MyISAM and other Storage Engines still available • Many performance/scalability improvements • Better instrumentation & diagnostics
- 5. InnoDB Performance improvements • Multiple/Split Buffer Pool Instances • Multiple Rollback Segments • Improved recovery performance • Native async I/O on Linux • Extended Change Buffering (with delete buffering, purge buffering) • Control of overall I/O capacity • Restored group commit
- 6. InnoDB Scalability Improvements • Improved Log Sys mutex • Separate Flush List mutex • Improved Purge Scheduling • Improved default thread concurrency • Control of background I/O threads • Control of using the OS memory allocator • Faster locking algorithms
- 7. InnoDB Instrumentation/Diagnostics • InnoDB stats in PERFORMANCE_SCHEMA • More extensive SHOW ENGINE INNODB STATUS • New INFORMATION_SCHEMA tables
- 8. Improved Availability • Semi-synchronous Replication • Replication Heartbeat • Replication Slave fsync() options • Automatic Relay Log Recovery • Per-master event filtering • Replication Slave Side Type Conversions • Individual Log Flushing • SHOW RELAYLOG EVENTS
- 9. Improved Manageability & Usability • PERFORMANCE_SCHEMA • SIGNAL/RESIGNAL • Pluggable authentication framework • More Partitioning Options
- 10. Give it a spin! • Download MySQL 5.5 from the usual place: http://dev.mysql.com/downloads/mysql/ • Send us feedback and bug reports: http://bugs.mysql.com/ • Questions? Use the Forums or Mailing Lists: http://forums.mysql.com http://lists.mysql.com • Blog about your experiences: http://planet.mysql.com
- 11. Discussion / Q & A
- 12. Thank you! Lenz Grimmer <lenz.grimmer@oracle.com> http://www.lenzg.net/ @lenzgr