The replay of the two webinars can now be accesed from mysql.com

Remember that the second part of the webinar will be on March 3rd (details below).

ClusterJ Architecture

MySQL have been working on a new way of accessing MySQL Cluster using Java. Designed for Java developers, the MySQL Cluster Connector for Java implements an easy-to-use and high performance native Java interface and OpenJPA plug-in that maps Java classes to tables stored in the high availability, real-time MySQL Cluster database.

There is a series of 2 webinars coming up, as always these are free to attend – you just need to register in advance:

Part 1: Tuesday, February 16, 2010: 10:00 Pacific …

Few days ago, the folks at SQLAlchemy pushed some proposed modification to the MySQL Connector/Python dialect. Before this patch, previous report yielded 72 errors and 11 failures. Now we got down to 9 errors, but the failures are still lingering. Is this an improvement? Yes and no, failures should go down, but there are some SQLAlchemy tests I just can't figure out, yet.. clues are welcome!

Here are some detailed results which also included MySQLdb and oursql. I used SQLAlchemy revision 6788 (i.e. from …

How do you build one of the busiest websites on the Internet? You wouldn’t guess the right answer to be, “You download some free software and hack  it”…Actually  the question is how do you build one of the world’s busiest websites that will scale affordably? You use open source software.

Twitter showed everyone their cards recently by publishing all the open source projects that they are contributing to. This is the picture of how open source software should work.

Organization has a a big, hard problem to solve. They write some software or update existing software and …

Understanding MySQL Internals Understanding MySQL Internals. By Sasha Pachev, O’Reilly 2007. Page count: about 227 pages. (Here’s a link to the publisher’s site). I should have read this book a long time ago, and it’s my loss that I didn’t. Although the title makes it sound like it should only benefit those who’ll be changing the MySQL server’s own code, that’s not true. To the contrary, at least parts of this book should be required reading for DBAs and developers who use MySQL, after they gain a moderate level of familiarity with how to use the server.

I'm speaking this year at the MySQL Conference & Expo 2010 in Santa Clara. Be sure to get your early registration discount by Feb 22! If you miss that deadline, get 25% off with this discount code: mys10fspI'm presenting a talk on SQL Injection Myths and Fallacies. This may seem like a topic that's been done to death, but it's important for all developers to understand it. This reminds me of

The infamous Bug#989 was pushed into the trunk.

This marks an end of an important project that I personally and the runtime team spent eons of time on.

Why do I say we pushed it "again"? The fix, which is comprised by three worklogs, was initially pushed into 6.0 tree.
Yeah, an intended basis for the next GA.
But 6.0 received a bunch of alpha code, which, worse yet, was since then abandoned by its authors.

Just taking 200 changesets out, stabilizing them in a 5.1 based clone, and re-merging/integrating with the remaining stable features that were added to the trunk took 2 months. Thanks to brilliant 6.0 planning and the turbulent times...

But we didn't just do that. Thanks to MySQL's internal QA, and the time that the patch sat in a public tree, we were able to identify a lot of …

Changes (as compared to 3.7) include:

Features:
* Added a monitor for InnoDB deadlocks (as exposed by SHOW ENGINE INNODB STATUS -statement).
* In case of a program crash on Linux, MONyog will save a core dump like the Windows version already does.  The dump is saved in ../MONyog/bin folder.

Bug Fixes:
* EXPLAIN from Processlist page could fail with syntax error due to a missing SPACE character in the statement.

Downloads: http://webyog.com/en/downloads.php
Purchase: http://webyog.com/en/buy.php

Creating MySQL Backups With AutoMySQLBackup On Ubuntu 9.10

AutoMySQLBackup is a shell script that lets you take daily, weekly and monthly backups of your MySQL databases using mysqldump. It can back up multiple databases, compress the backups, back up remote databases, and email the logs. This tutorial explains how to install and use it on an Ubuntu 9.10 server.

I’m a little behind in announcing this but I’m going to be speaking at O’Reilly’s MySQL Conference this year. My presentation is a three hour tutorial titled, Drizzle Storage Engine Development. Practical Example with BlitzDB. Three hours is a long time but I assure you that there will be a break.

This session isn’t solely about going through Drizzle’s Storage Engine API. Various performance topics like B+Tree structure, memory handling and concurrency control will be covered. I will also go through BlitzDB’s design concept and it’s internal stuff. So, needless to say I’ll talk a lot about Tokyo Cabinet and it’s internals as well.

Hopefully those that come along will walk out of the tutorial standing far ahead of the start line. It will help you get started on reading the implementation of other storage engines in the …

The Facebook database engineering team will present High-throughput MySQL at the MySQL Conference on Thursday, April 15. We will describe our changes for MySQL that are in production and in progress and share our experience supporting a busy MySQL deployment.