MySQL data service running on a clustered-server model provide orderly startup, shutdown, fault monitoring, and high availability(failover) mechanism compared to the single server model. It can be free donwloaded, and Sun also released Open HA cluster, derived from the Sun Cluster 3.2 agents including HA MySQL data service. The open HA cluster also provide build tools necessary to develop new features, build and use the code. In addition, Sun cluster 3.2 Data service for MySQL has the advantages including:

• It is easy to install and configure with straightforward GUI and command line interfaces.

• Expanded support for Solaris Containers(Solaris zones)

• Expanded support for SMF

• ZFS is fully supported as a local highly available …

Well, today is the official end of coding for the Summer of Code and I am pleased to let everyone know that the MySQL Test Creator, a lua script that integrates with the MySQL Proxy, is indeed working and creating test scripts. So, that being said I wanted to run down some of the features that have been implemented to increase test creation productivity and ease.

http://code.google.com/p/mysql-test-creator/

First of all, what my project does is using the MySQL Proxy, it intercepts queries between the client and the MySQL backend and records the query plus its result in a fashion acceptable to mysqltest. There is a `START` and `STOP` mechanism that allows the user to selectively record within whatever window necessary to the creation of the test case and all of the meat of this tool happens in this recording window.

Mysqltest's …

A buddy of mine from Borland days, Ben Riga, is helping to drive the content for Microsoft's Mix '08 conference. He's looking for input on what would make Mix attractive to startups and venture capitalists. To be honest, I haven't seen a lot of startups using the Microsoft stack in recent years. I'm sure there are plenty, but it seems at least at first glance, there's far more innovation happening over on the LAMP stack (Linux, Apache, MySQL, PHP) and with other emerging languages like Ruby on Rails, Scala, etc. Still there's no reason that Windows as a platform couldn't... READ MORE

MySQL data service running on a clustered-server model provide orderly startup, shutdown, fault monitoring, and high availability(failover) mechanism compared to the single server model. It can be free donwloaded, and Sun also released Open HA cluster, derived from the Sun Cluster 3.2 agents including HA MySQL data service. The open HA cluster also provide build tools necessary to develop new features, build and use the code. In addition, Sun cluster 3.2 Data service for MySQL has the advantages including:

• It is easy to install and configure with straightforward GUI and command line interfaces.

• Expanded support for Solaris Containers(Solaris zones)

• Expanded support for SMF

• ZFS is fully supported as a local highly available …

MySQL data service running on a clustered-server model provide orderly startup, shutdown, fault monitoring, and high availability(failover) mechanism compared to the single server model. It can be free donwloaded, and Sun also released Open HA cluster, derived from the Sun Cluster 3.2 agents including HA MySQL data service. The open HA cluster also provide build tools necessary to develop new features, build and use the code. In addition, Sun cluster 3.2 Data service for MySQL has the advantages including:

• It is easy to install and configure with straightforward GUI and command line interfaces.

• Expanded support for Solaris Containers(Solaris zones)

• Expanded support for SMF

• ZFS is fully supported as a local highly available …

If you have an Ubuntu 7.04 Feisty Linux Distribution and you are planning to install mysql-proxy in order to test the new proxy functionalities, maybe you will have some problem. I use Ubuntu 7.04 on my laptop, with all packets installed and configured correctly using Synaptic Packet Manager and, in fact, I had problems! If you won’t have problems … well … I’m unlucky!

First of all, there is not a packetized mysql-proxy for Ubuntu, so the only way to install it is to build it from the source you can get from MySQL website.

mysql-proxy needs the LUA scripting language in order to work correctly. LUA is the milestone, the tool to write configuration scripts to instructs mysql-proxy what to do receiving packets to and from the MySQL server. LUA is the key to achieve great tasks from …

Lastly, I’ve been blogging about positive performance related feedback on mysqlnd. Whenever I did so, I got some positive feedback - for obvious reasons: I was posting good marketing news. On the one hand I like to get that feedback, on the other hand I do not feed comfortable with it. As much as I’d love to, I can’t stand behind a simple statement like “mysqlnd makes your applications faster”. You must not assume that each and every application will profit from mysqlnd. For example, my WordPress blog did not run any faster with mysqlnd. After looking at WordPress in more detail, this is no surprise to me.

Proper load simulation using JMeter

Recently, when I was visiting old fellows from Mayflower (AKA thinkPHP) in Munich, Johann told me to get familiar with …

Lastly, I’ve been blogging about positive performance related feedback on mysqlnd. Whenever I did so, I got some positive feedback - for obvious reasons: I was posting good marketing news. On the one hand I like to get that feedback, on the other hand I do not feed comfortable with it. As much as I’d love to, I can’t stand behind a simple statement like “mysqlnd makes your applications faster”. You must not assume that each and every application will profit from mysqlnd. For example, my WordPress blog did not run any faster with mysqlnd. After looking at WordPress in more detail, this is no surprise to me.

Proper load simulation using JMeter

Recently, when I was visiting old fellows from Mayflower (AKA thinkPHP) in Munich, Johann told me to get familiar with …

When you use SHOW STATUS can can restrict with the LIKE syntax, allowing for a subset of values. For example:

mysql> SHOW GLOBAL STATUS LIKE 'Com%';
+--------------------------+-------+
| Variable_name            | Value |
+--------------------------+-------+
| Com_admin_commands       | 0     |
| Com_alter_db             | 0     |
| Com_alter_table          | 0     |
| Com_analyze              | 0     |
| Com_backup_table         | 0     |
| Com_begin                | 0     |
| Com_change_db            | 0     |
| Com_change_master        | 0     |
...

That’s great, but sometimes you want specific values. Using WHERE can achieve this. For Example.

mysql> SHOW GLOBAL STATUS WHERE VARIABLE_NAME IN (?Com_insert?,'Innodb_buffer_pool_pages_latched?,'threads_running?);
+----------------------------------+-------+
| Variable_name                    | Value |
+----------------------------------+-------+
| Com_insert                       | …

I feel like I am hitting a good mastery of Xen. The real magic left?
How the main process communicates during the point where you move one
running server to another. That part... not quite sure what is going
on with that.

virt-clone is an awesome little command that I just discovered
(oops!). The absurdity I was doing before I figured that out was more
then a little crazy.

I need to figure out how to backup the xen images. My base OS images
are all 8 gigs a piece. This means:

S3 Slow.... very slow to transfer these images.

Revision Control System I am wondering how well mercurial
or bizarre would work if I started tossing 8 gig images in them. No
possibility for deltas. I can re-clone to drop history when I need it
(though I suspect that the new bzng feature to lose history might
work). Distributed …