MySQL has laid out its software road map through 2009, including some
code contributed by Google and security improvements that are due in
MySQL 7.0. Google is secretive about the distributed architecture
underlying its services, but it's known to be one of MySQL's biggest
users, running hundreds or even thousands of its databases worldwide.
The search company has done a lot of work customizing MySQL to meet
its special needs, which include better database replication, and tools
to monitor a high volume of database instances. MySQL 5.1 is scheduled
for general availability in the first quarter next year. Advances
include table and index partitioning, which should boost data warehousing
performance, and the option of row-based replication, which lets
companies create more exact back-up replicas. The big change in 6.0
will be the availability of MySQL's storage engine, Falcon. The most
popular storage engine for MySQL has historically been InnoDB, but two
years ago Oracle acquired InnoDB's developer, Innobase. Oracle continued
to license the software to MySQL, but MySQL wanted an alternative.
Falcon will do crash recovery and roll-back operations faster than
InnoDB because they are done from main memory, Schumacher said, but some
InnoDB features, like foreign key support and full-text indexing, won't
be supported until MySQL 6.1. 6.1 is due to go into beta in mid-2008
and start to ship widely in 2009. Improvements include better prepared
statements and server-side cursors, Schumacher said. Despite all the
buzz a few years ago about native XML (Extensible Markup Language)
support, Axmark said he's still waiting for a clear signal about what
customers want. Until then it's not a big priority for MySQL, although
there are some XML capabilities in 5.1. More Information
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