With this release the InnoDB Plugin reaches GA (General Availability) state and is recommended for use in production environments.

For the ease of users this and subsequent releases of the InnoDB Plugin will be included in the MySQL 5.1 distributions (source and binary) and thus it will not be necessary anymore to fetch the InnoDB Plugin separately.

You can download MySQL 5.1.46 which includes the InnoDB Plugin 1.0.7 from the MySQL 5.1 download page.

The complete list of the changes since 1.0.6 can be found in the InnoDB Plugin documentation which now lives on mysql.com.

Please report your comments and any problems or issues with the InnoDB Plugin in the InnoDB Plugin Forum or in the MySQL bug database.

We hope you will enjoy this new release of the InnoDB Plugin!

InnoDB 1.1.x is based on the InnoDB Plugin 1.0.x.

InnoDB 1.1.x is included as the standard InnoDB in MySQL 5.5 and will not be distributed separately, thus we have decided to remove the word “Plugin” from its name.

InnoDB 1.1.0 includes the following enhancements, when compared with InnoDB Plugin 1.0.6:

• Faster recovery
• Multiple buffer pool instances
• Multiple rollback segments
• Extended change buffering with delete buffering and purge buffering
• Native Asynchronous IO on Linux
• Improved purge scheduling
• Improved log sys mutex
• Separate flush list mutex
• More stats in PERFORMANCE_SCHEMA

MySQL 5.5.4-m3, which includes InnoDB 1.1.0 can be downloaded from the MySQL 5.5 download page.

For more information see the Introduction to MySQL 5.5 and the InnoDB 1.1 manual.

Please report your comments and any problems or issues with the InnoDB in the InnoDB Forums or in the MySQL bug database.

We hope you will enjoy this new release of the InnoDB!

This release contains numerous bug fixes and performance enhancements. Some of the most significant changes are:

• Enforced NOT NULL column constraint during insert and update.
• Introduced the settable global variables lru_old_blocks_pct and lru_block_access_recency for controlling the buffer pool eviction policy.
• The VARBINARY column type was enabled.
• Support inlining of functions and prefetch with Sun Studio. These changes are based on contribution from Sun Microsystems Inc. under a BSD license.
• Implemented IO capacity tuning.
• Added new API functions for checking whether a transaction currently holds a shared lock on the InnoDB data dictionary and to list all configuration variables.
• Added IB_DECIMAL column type.
• Speed up search by not fetching the next N records when doing an unique search.
• Introduce a new boolean configuration parameter “adaptive_flushing” which can be set to OFF to disable the adaptive flushing.

See the ChangeLog or the online documentation for a complete listing of the changes since release 1.0.3.5325.

You can download source code and binaries for the Embedded InnoDB from the download page.

Please report your comments and any problems or issues with the Embedded InnoDB in the InnoDB Forums.

Thank you, and enjoy!

Changes since release 1.0.4 include a number of bug fixes and improvements, of which the most noticeable are:

• Users can now limit the impact of a full scan (such as done by “mysqldump” or creating an index) on other operations by adjusting the way scanned pages enter the buffer pool.
• Duplicate table names are now reported to the client connection instead of the server error log.
• CREATE INDEX can now be interrupted.

This page descrbes how the buffer cache behavior can be tuned to reduce the impact of a full scan on ongoing operations, and presents some performance data from a simple test.

This release is a jump from the previously available InnoDB Plugin, release 1.0.4. Sun distributes with MySQL V5.1.41 an intermediate release of the InnoDB Plugin (release 1.0.5), a different option for you to use with that release of MySQL. InnoDB Plugin release 1.0.6 differs from 1.0.5 with the addition of several bug fixes.

For a full list of changes see the InnoDB Plugin Change History or the online ChangeLog.

Source code and binaries for the InnoDB Plugin 1.0.6 can be downloaded from the download page. This new release will work with MySQL releases 5.1.24 and up when built from source. Binaries have been compiled for MySQL 5.1.41 and can be plugged in dynamically only in that version.

Please report your comments and any problems or issues with the InnoDB Plugin in the InnoDB Plugin Forum or in the MySQL bug database.

We hope you will enjoy this new release of the InnoDB Plugin!

We are grateful to Sun Microsystems, Google and Percona Inc., for their contributions, which are described in the InnoDB Plugin documentation and in the source code files. This page provides an overview of some of the new features and how the InnoDB team incorporated or modified the contributions, or introduced changes of our own.

Some of the new features in this release can significantly performance and scalability, depending on workload and tuning considerations. Some highlights:

• I/O-bound DBT2 throughput is more than 8% better than the built-in InnoDB distributed with MySQL
• CPU-bound DBT2 throughput is nearly 20% better than the built-in InnoDB
• Group commit now allows InnoDB to scale better from 16 to 64 users, with as much as 60% more throughput at 64 users!
• “Adaptive flushing” dramatically eliminates throughput dips during checkpoints

More details on some of the performance tests we conducted and the results achieved are presented here.

Reliability is enhanced in this release, because queries are protected from using indexes created while they were executing, eliminating the possibility of wrong results. Out of the box performance and usability are enhanced through improvements in default configuration parameters. This release also improves usability with more concise output for the command SHOW ENGINE INNODB MUTEX, which is especially helpful when using a large buffer pool.

Because of changes made in MySQL V5.1 to fix MySQL Bug #42610, installing this release as a binary plugin to MySQL 5.1.37 requires some small changes in my.cnf (or my.ini) configuration files, as described in the documentation.

Source code and binaries for the InnoDB Plugin 1.0.4 are now available for download. This new release will work with MySQL releases 5.1.24 through 5.1.37 when built from source. Binaries have been compiled against MySQL 5.1.37 and can be plugged in dynamically only to that version.

Several bugs were fixed in this release, including those reported in the MySQL bug database, as well as those internally detected. This release also reflects all other changes made in MySQL through version 5.1.37. A full list of changes in InnoDB Plugin release 1.0.4 is available in the documentation and in the online ChangeLog.

Please report your comments and any problems or issues with the InnoDB Plugin in the InnoDB Plugin Forum or in the MySQL bug database.

We hope you are pleased with this release of the InnoDB Plugin!

This release contains numerous bug fixes and performance enhancements. Some of the most significant changes are:

• Improved performance: row caching and faster inserts
• Better error management: an application can intercept InnoDB log messages
• Simplified compile and build: all API definitions are now in a single file “innodb.h”
• More configurability: application can check API version at runtime

See the ChangeLog for a complete listing of the changes since release 1.0.0. The documentation has been updated and improved.

You can download source code and binaries for the Embedded InnoDB from the download page.

Please report your comments and any problems or issues with the Embedded InnoDB in the InnoDB Forums.

Thank you, and enjoy!

• Ken and Heikki: InnoDB: Innovative Technologies for Performance and Data Protection
• Heikki: Crash Recovery and Media Recovery in InnoDB
• Heikki: Concurrency Control: How it Really Works
• Calvin and Heikki: InnoDB File Formats and Source Code Structure

The description of these and other presentations about InnoDB are available here.

Made for application developers, device makers and ISVs, Embedded InnoDB provides all the high-performance, proven and reliable data management features of InnoDB for embedding in the target applications, with a small footprint, low overhead and no unneeded features.

Embedded InnoDB is based on the InnoDB Plugin, but is used completely independently from MySQL. It is not a plugin, nor a storage engine for MySQL. It is designed to be linked directly into application programs, and provides highly efficient, low-level database management services, not using SQL.

Embedded InnoDB provides the features, functions and capabilities that embedded application require:

• the proven high-performance and reliability and functionality of InnoDB
• a low-level but powerful API for application programmers
• the operational characteristics needed for stand-alone applications where there is no DBA

Heikki Tuuri, founder of Innobase, and chief architect and implementer of InnoDB said

The embedded version of InnoDB brings all the high-performance, proven and reliable data management features of InnoDB to developers, ISVs and OEMs in an embeddable form. Embedded InnoDB provides users the small and reliable relational, transactional storage engine they need for edge application and device needs.

Phillip Carruthers, CEO of seeMore Technologies in the UK, has been reviewing and testing Embedded InnoDB. He has made these comments:

Embedded InnoDB is a great product for seeMore Technologies. With its new API, we can include InnoDB directly in our Virtual Database Server, getting all the proven benefits of performance and reliability for which InnoDB is known, and no extra footprint or unneeded features.

We’ve been able to integrate Embedded InnoDB with the seeMore Virtual Database Server in just days.

The performance of Embedded InnoDB is impressive. The API provides a low-level interface that gives our Virtual Database direct access to InnoDB data, with no SQL overhead.

We believe Embedded InnoDB will help us to deliver a faster and more reliable storage engine for companies wanting to use the seeMore Virtal Database Server for storing large volumes of data as well as accessing their existing enterprise data. With the automatic configuration capabilities and operational API functions in Embedded InnoDB, the seeMore Virtual Database won’t require any database administrator monitoring or management.

Embedded InnoDB is currently available in binary for Linux and Windows, and in source form under the GPL V2 license.

Read more about Embedded InnoDB, and stay tuned for future announcements.