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Displaying posts with tag: flexcdc (reset)

Trawling the binlog with FlexCDC and new FlexCDC plugins for MySQL
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Swanhart-Tools includes FlexCDC, a change data capture tool for MySQL. FlexCDC follows a server’s binary log and usually writes “changelogs” that track the changes to tables in the database. I say usually because the latest version of Swanhart-Tools (only in github for now) supports FlexCDC plugins, which allow you to send the updates to a remote data source, or to any other place of your liking.  You can find out more about FlexCDC basics in a previous blog post.

Please note that FlexCDC still needs to have source and destination

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Trawling the binlog with FlexCDC and new FlexCDC plugins for MySQL
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Swanhart-Tools includes FlexCDC, a change data capture tool for MySQL. FlexCDC follows a server’s binary log and usually writes “changelogs” that track the changes to tables in the database. I say usually because the latest version of Swanhart-Tools (only in github for now) supports FlexCDC plugins, which allow you to send the updates to a remote data source, or to any other place of your liking.  You can find out more about FlexCDC basics in a previous blog post.

Please note that FlexCDC still needs to have source and destination instances defined in

  [Read more...]
Flexviews 1.7.0 GA released
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I am happy to announce the GA release of Flexviews. I've numbered the release 1.7.0 GA.
There are a small number of bug fixes and enhancements:

  • Fixes for views which have aggregate functions but no GROUP BY expressions could have had problems during incremental update.
  • GA support for all aggregate functions except GROUP_CONCAT and AVG(distinct).
  • The PERCENTILE_XX (ie PERCENTILE_90 for a 90th percentile calculation) is now stable too


FlexCDC got a number of fixes and improvements:

  • TIMESTAMP columns are now properly supported
  • Now mysqlbinlog errors are detected, and the program exits gracefully
  • FlexCDC now logs to a log file instead of writing to STDOUT/STDERR
  • There are new PHP scripts for adding and removing table changelogs
  • Also, a new wrapper script (consumer_safe.sh)


You can get it here: http://flexvie.ws
Flexviews 1.6.0-RC2 is released
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Available immediately Flexviews 1.6.0-RC2.

This release is a bugfix release.  This is the second Flexviews release candidate.  If no major bugs are discovered the next release will be the GA release.

Flexviews is a stored procedure managed materialized view system for MySQL 5.1 or greater. 

What is fixed in Flexviews 1.6.0-RC2?
  • Numerous performance fixes. 
    • Flexviews uses fewer temporary tables and subqueries
    • A full table scan of the view is no longer required (only changed GB keys are scanned)
    • Dead code has been removed
  • Bug fixes
    • Removing tables and adding them to a view again could result in the WHERE clause being generated in the wrong order
    • Fix a problem with applying deltas to views which use PERCENTILE
    • Improved error messages
  • FlexCDC Bug






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Flexviews 1.6.0-RC1 is released
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Whats new in Flexviews 1.6.0RC1
  • This is the first release candidate before the final release.  If no major bugs are uncovered, then the next release will be the first GA release. 
  • Flexviews now has a test suite for all major features.  The creation of these tests uncovered a number of issues which have been resolved in this release. 
  • All MySQL aggregate functions except GROUP_CONCAT are now supported. 
  • A special aggregate function called PERCENTILE is now also supported.  The calculation uses a modified version of the GROUP_CONCAT based solution suggested by Roland Bouman for percentiles.  This function should be considered experimental.  Please report bugs if you find any.
  • You can add indexes to enabled materialized views using SQL_API/add_expr
  • Adding PRIMARY KEY indexes is no longer
  [Read more...]
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