Dear MySQL users,

MySQL Server 5.5.56 is a new version of the 5.5 production release
of the world's most popular open source database. MySQL 5.5.56 is
recommended for use on production systems.

Binary packages for MySQL 5.5.56 are identical to those for MySQL 5.5.55,
except for the version number. The change in 5.5.56 for Bug #25942414 is
applicable only to those who build from source.

MySQL 5.5 includes several high-impact enhancements to improve the
performance and scalability of the MySQL Database, taking advantage of
the latest multi-CPU and multi-core hardware and operating systems. In
addition, with release 5.5, InnoDB is now the default storage engine for
the MySQL Database, delivering ACID transactions, referential integrity
and crash recovery by default.

MySQL 5.5 also provides a number of additional enhancements including:

- Significantly improved performance on Windows, with various
Windows specific features and improvements
- Higher availability, with new semi-synchronous replication and
Replication Heartbeat
- Improved usability, with Improved index and table partitioning,
SIGNAL/RESIGNAL support and enhanced diagnostics, including a new
Performance Schema monitoring capability.

For a more complete look at what's new in MySQL 5.5, please see the
following resources:

Documentation:

http://dev.mysql.com/doc/refman/5.5/en/mysql-nutshell.html

If you are running a MySQL production level system, we would like to
direct your attention to MySQL Enterprise Edition, which includes the
most comprehensive set of MySQL production, backup, monitoring,
modeling, development, and administration tools so businesses can
achieve the highest levels of MySQL performance, security and uptime.

http://mysql.com/products/enterprise/

For information on installing MySQL 5.5.56 on new servers, please see
the MySQL installation documentation at

http://dev.mysql.com/doc/refman/5.5/en/installing.html

For upgrading from previous MySQL releases, please see the important
upgrade considerations at:

http://dev.mysql.com/doc/refman/5.5/en/upgrading.html

MySQL Database 5.5.56 is available in source and binary form for a
number of platforms from our download pages at:

http://dev.mysql.com/downloads/mysql/

The following section lists changes in MySQL since the release of MySQL
5.5.55.

http://dev.mysql.com/doc/relnotes/mysql/5.5/en/news-5-5-56.html

Enjoy!

Changes in MySQL 5.5.56 (2017-05-02)

Security Notes

* For the WITH_SSL CMake option, no is no longer a
permitted value or the default value. The default is now
bundled. Consequently, MySQL now is always built with SSL
support. (Bug #25942414)

On Behalf of the MySQL/ORACLE RE Team
Hery Ramilison

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