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MySQL 5.5 Now Generally Available


In a continued effort to attempt to underscore its commitment to deliver new innovations in MySQL, Oracle has announced general availability of the MySQL 5.5 relational database management system. Enhancements in the new release are aligned towards improved performance and scalability of web applications across multiple operating environments including Windows, Linux, Oracle Solaris, and Mac OS X.

The MySQL 5.5 Community Edition, which is licensed under the GNU General Public License (GPL) for free download includes InnoDB as the default storage engine. Oracle says that this release has benefitted from "substantial user community participation and feedback" on the MySQL 5.5 Release Candidate, which was released back in September of this year to help provide a more broadly tested product.

The 5.5 release of MySQL provides stronger customization capabilities and scalability requirements for DBAs and developers who need to build and scale web applications. Oracle says that this scalability comes from the fact that both the MySQL database and the InnoDB storage engine have been enhanced to provide optimum performance and scalability when running on the latest multi-CPU and multi-core hardware and operating systems.

"The latest release of MySQL further exemplifies Oracle’s commitment to the MySQL community and investment in delivering innovation and enhancements to the MySQL platform. With MySQL 5.5, end users and ISVs have a high performance, reliable, scalable and cost-effective alternative to Microsoft SQL Server for building and deploying their business critical web and embedded applications," said Edward Screven, Oracle’s chief corporate architect.

Also in the version 5.5 release:

  • Improved usability: Improved index and table partitioning, SIGNAL/RESIGNAL support and enhanced diagnostics, including a new PERFORMANCE_SCHEMA, improve the manageability of MySQL 5.5.
  • Higher availability: New semi-synchronous replication and Replication Heart Beat improve failover speed and reliability.
  • In recent benchmarks, the MySQL 5.5 release candidate delivered significant performance improvements compared to MySQL 5.1. Results included
    • On Windows: Up to 1,500 percent performance gains for Read/Write operations and up to 500 percent gain for Read Only.
    • On Linux: Up to 360 percent performance gain in Read/Write operations and up to 200 percent improvement in Read Only.

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