MySQL’s Falcon Spreads Wings
Open source database developer has string of product announcements
September 25, 2007 —
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MySQL AB, creator of the open source MySQL database, had a busy September, as the company announced a release candidate of MySQL 5.1 Community Server, an alpha release of MySQL 6.0, a new version of MySQL Enterprise and other components.
Database partitioning is the most-touted feature of MySQL 5.1, but there’s more beyond that. Row-based replication writes changes to a log on the master server, instead of sending SQL statements to a slaved database. As of version 5.1.8, this will be the default replication behavior, with the row-based option preserved.
MySQL 5.1 adds support for a plug-in API that enables the flexible loading and unloading of components on a running server; a text parser is likely to be the first beneficiary of the new API. The new release also includes a built-in event scheduler, and an overhaul of clustering features.
Along with the MySQL 5.1 release candidate and the alpha of 6.0, MySQL Proxy and MySQL Connector/ODBC 5.1 were expected to become generally available in September. MySQL Proxy allows users to analyze and monitor communications between a client and the MySQL server. The MySQL Connector/ODBC 5.1, as the name implies, is an ODBC driver that provides client access to a MySQL database.
MySQL 6.0 will be built on the new Falcon transactional storage engine, which is designed to run on a variety of hardware platforms. The MySQL Falcon architecture consists of six basic components: data files, a log containing data and index changes, a page cache, a record cache, system memory, and worker threads that move data from the Falcon log into the page cache. Falcon log files contain entries for committed data to be copied into the database, with entries that allow it perform redo actions during recovery. It alternates between log files, switching when all entries in older files have been moved into the database file.
Falcon can be previewed as part of the MySQL alpha, and runs on Intel-based Mac OS X, Linux and Windows. MySQL plans to have a GA release in mid-2008.
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