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David Shrewsbury Leading Community Doxygen Project

After being "on hold" briefly for a variety of reasons, the Community Doxygen Project, which aims to "doxify" the MySQL server source code comments into standardized Javadoc commenting, is coming together.

David Shrewsbury will be leading the Doxygen Project for the community, with help from myself, Nicklas Westerlund, Frank Mash, Baron Schwartz, and Ronald Bradford. David has been working …

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Trick or Treat - Web 2.0 Goodies for ColdFusion

I am happy to announce the latest creation from foundeo: fusionKit.

fusionKit is a CD full of some handy ColdFusion components and UDF's. It is a similar concept to the DRK's that Macromedia used to sell, but is it's 100% ColdFusion.

My favorite component in the kit is the Bayesian CFC. You may recall that spam filters tend to use bayesian analysis to determine if a message is spam or ham. This CFC allows you to perform the same kind of analysis on any block of text. I am using this CFC in one of my client's blogs, and it has blocked over 4,000 spam comments in one week!

There is also the tagging CFC, which makes it easy to work with tags or …

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CodeMash - I'll Be There

I will be attending CodeMash in January (perhaps even as a speaker, as I put in a proposal for a session. It is a semi-local event for me, as it is in Sandusky, Ohio, which is about an hour and a half away from Columbus. Should be a great event for coders, and represents all platforms, not just Linux, so is bound to be a good event for networking with a variety of enthusiasts of all development platforms. Check it out!

What?s Your Uptime? What?s Your Uptime Worth?

My company has 9 production MySQL servers.

Our company does:

over 4 billion queries a week — an average of over 450,000 per machine, though in reality 2 servers do near 1 billion themselves, 5 do about the average, and 2 do much less (about 65k and 100k queries).

receive over 1380 GB (almost 1.35 TB!!) of data per week, an average of over 153 GB per server.

send out over 1400 GB of data per week, an average of 157 GB per server.

Our hardware is only somewhat beefy — 64-bit architecture, 3.20 GHz Intel(R) Xeon(TM) CPU, 6GB of RAM in 4 of the 5 most-used servers (4GB in the others).

We make over USD $220,000 per week ($10 billion per year) in sales for our web application.

If we bought the highest level of service, Platinum, for all 9 production machines, the cost would be 0.40% of our sales. The cost would be less than the cost of a new IT person (even a junior IT person!), and …

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What?s Your Uptime? What?s Your Uptime Worth?

My company has 9 production MySQL servers.

Our company does:

over 4 billion queries a week — an average of over 450,000 per machine, though in reality 2 servers do near 1 billion themselves, 5 do about the average, and 2 do much less (about 65k and 100k queries).

receive over 1380 GB (almost 1.35 TB!!) of data per week, an average of over 153 GB per server.

send out over 1400 GB of data per week, an average of 157 GB per server.

Our hardware is only somewhat beefy — 64-bit architecture, 3.20 GHz Intel(R) Xeon(TM) CPU, 6GB of RAM in 4 of the 5 most-used servers (4GB in the others).

We make over USD $220,000 per week ($10 billion per year) in sales for our web application.

If we bought the highest level of service, Platinum, for all 9 production machines, the cost would be 0.40% of our sales. The cost would be less than the cost of a new IT person (even a junior IT person!), and …

[Read more]
NdbScanFilter

Sometimes the NDBAPI is not perhaps the most straightforward. This might be useful if you are struggling with scan filters (filtering tuples in the ndbd kernel, like engine-condition-pushdown) in combination with strings. Please have a look at my previous blog about how to use strings in the NDBAPI.

If you are using string daratypes with the NdbScanFilter::COND_EQ then the following rules applies:

  • VARCHAR and VARBINARY strings must have their length prepended (1 or 2 bytes)
  • CHAR must be space padded
  • BINARY must be null byte padded

However, for NdbScanFilter::COND_LIKE the following applies:

  • VARCHAR and VARBINARY must NOThave the lenght prepended!
  • CHAR must NOT be space padded
  • BINARY must NOT be null byte padded

Many thanks to Pekka (MySQL) and Jim Dowling (MySQL) on this subject.

New test strategy for SQLbusRT

The test results that I have generated before (see my previous post) did not really help me in reaching my project goal, which is to make it possible to predict SQLbusRT's performance, reliability and scalability when it is used in an application.

In my new strategy I'm gonna take one step at a time to put the different components of SQLbusRT to the test.

My first upcoming test will involve sending messages back and forth between two processes, using the ORTE communication bus. This way, I can really measure ORTE's performance and reliability alone, without influence of MySQL. I will perform this test in different scenario's which will let me determine the scalability as well.

After having processed the results of these tests, I will include MySQL. Making these separate tests will let me determine the influence of ORTE and MySQL separately.

The new test results will of course be posted …

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Making PHP on Windows work!

Today we announced a partnership with Microsoft. The goal of this technical collaboration is to make PHP on Windows a first class citizen. It has always been our goal to make PHP run well on any platform, and this initiative reinforces that. Both companies have also observed huge interest both from the community and our respective customers bases in good PHP support on Windows, and therefore, collaborating on making this happen is a no-brainer for both.

This is actually not the first time where PHP and Windows have crossed paths. Five years ago, Microsoft invited the PHP development team to come to Redmond and spend a week in their labs to optimize PHP on Windows. Zeev, Shane Caraveo and myself represented the PHP team. We actually made quite a few significant improvements but since that time, there hasn't been much focus on making PHP run well on Windows. Also, five years ago the team that invited us Redmond didn't have very much of …

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451 CAOS Links - 2006.10.30

MySQL AB Licenses Hyperic IT Management Technology, MySQL (Press Release)

Hyperic Gives ISVs Enterprise-Class IT Management Capability with New OEM Partner Program, Hyperic (Press Release)

Medsphere Expands Management Team To Support Growing Market Interest in OpenVista Electronic Health Record System, Medsphere (Press Release)

Helmi Technologies Joins Open Source Collaborative Eclipse Foundation, Helmi Technologies (Press Release)

Bostech’s New ChainBuilder ESB Enables Communication Between Applications in a …

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Wikipedia leaves $100M on the table - no advertising

Jason McCabe Calacanis (Weblogs) writes about this... Jimmy Wales (Wikipedia) does not want to have *any* advertising, even if all of the proceeds were to go to worthy causes.

Is there anything wrong with that? Jason appears to think so, pleading with Jimmy to reconsider. There'll even be free bandwidth chucked in. But that's a catch... Jimmy does not want to be dependent on anyone else for hardware or bandwidth, Wikipedia has had fab offers from a variety of companies with great infrastructure. Other people are commenting to that blog post also, some reckon that Jimmy might change his mind "for the right price". I'm pondering... is it really so hard to understand -or at least appreciate and respect- that some people have certain guiding principles and actually stick with them - no price? Are we really so …

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