For the last 2-3 years, Brian Aker and I have had many discussions about how to refactor MySQL. Brian has been the one driving these discussions by asking why some things in MySQL were done in a certain way and in a true "what if" manner asked what would happen if we would do things in another way.

Being tired of not being able to get critically needed reconstruction work done in the MySQL server, Brian started to work on Drizzle to search for answers to these questions.

So what is Drizzle?

• Drizzle is what MySQL would be with a more interactive community involvement in the design of the software itself, and had targeted website deployments.

• Drizzle is a version of MySQL that is driven by Brian and the community, attempting to solve practical problems that a large group of MySQL users are facing.
  

• Drizzle is a smaller, slimmer and (hopefully) faster …

Can a panel of so-called experts make sense of open source? READ MORE

I can't be at OSCON this year.  But my colleague Rob is and he just posted a usability post about, of all things, the Double Tree hotel where I am sure a lot of you are staying.  Great stuff.

"What if"

Have you ever wanted to know what would happen if you had taken a different direction?

A number of months ago I was on the phone with the Rackspace CTO talking about Memcached and Gearman, and the work I am doing there. He had asked me if I had ever thought about creating a slimmed down version of MySQL to work with them.

The answer?

Of course!

This is something I get asked with some regularity. People will want MySQL done in some fashion other then what it does by default (aka what serves most of the user base). Taking the code and cutting out the one thing the requester dislikes is a pretty boring task. I keep a notebook of these requests. I consider it valuable feedback, not as single items, but as a whole.

After I got off the phone the idea stuck in the back of my mind. The next day I woke up and started playing with the idea of seeing what a …

EnterpriseDB announced the results of the survey they did a few months ago at OSCON. Now, take the results with a grain of salt as it was done by EnterpriseDB. EnterpriseDB is based on Postgres so there is a vested interest in making Postgres sound good. Results can be skewed depending on how the survey is worded, what options are available as answers and who the respondents are.

The results summary is available for free.

Some key facts:

500 respondents. The download page says "500 corporate IT leaders". Or maybe, 500 open source developers. ;-)

Only 9% of respondents indicated that they preferred commercial solutions over open source solutions. I would guess that a majority of those responding …

Since I didn’t have any MySQL public courses planned this summer, I’ve been using my work time from the last week in the new eBox website.

I’m still far away from what I’d like, but I’m proud my design skills have improved considerably.

For those of you who still don’t know what it is, eBox is a server for the easy administration of corporate networks. eBox was included with the last release of Ubuntu. See eBox in Ubuntu

I've been doing some benchmarking recently to satisfy the curiosity about 5.1's performance compared with 4.1.  The major question this time revolves around how much additional performance an external RAID array can provide (for us it's typically beyond the 6 drives a Dell 2950 can hold). 

These tests are done on using an MSA-30 drive enclosure with 15k-SCSI drives.  The testing framework is sysbench oltp.  The test names are hopefully fairly obvious:  selects = single selects, reads = range tests, xacts = transaction tests, etc.   Transaction tests are counting individual queries, not transactions.   The "Rdm" tests are using a uniform distribution, whereas the non-'Rdm' tests are 75% of queries are using 10% of the rows.  

…

I've been doing some benchmarking recently to satisfy the curiosity about 5.1's performance compared with 4.1.  The major question this time revolves around how much additional performance an external RAID array can provide (for us it's typically beyond the 6 drives a Dell 2950 can hold). 

These tests are done on using an MSA-30 drive enclosure with 15k-SCSI drives.  The testing framework is sysbench oltp.  The test names are hopefully fairly obvious:  selects = single selects, reads = range tests, xacts = transaction tests, etc.   Transaction tests are counting individual queries, not transactions.   The "Rdm" tests are using a uniform distribution, whereas the non-'Rdm' tests are 75% of queries are using 10% of the rows.  

…

Last week I wrote about whether Google’s potential acquisitions might be stifled by its focus on its own infrastructure software projects but noted that by releasing App Engine the company was encouraging a wider ecosystem of applications based on its platform.

What I didn’t discuss at the time was the potential risk of application vendors finding themselves locked-in to the App Engine platform. Of course Amazon also has this issue, the potential impact of which was …

A question that pops up frequently on Devshed forums is "How can I get all products that are available in Red and Green colors?" or "How can I find out which customers bought this book and that CD?", solution is simple and I'll provide an example here, it can be made more complicate at your option, but it all boils down to a where and an having condition.Say we have a table that lists all