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DataBase Performance - Critical Hardware Configuration Tips

In my opinion there are four critical and separate areas that govern the performance characteristics of a Database server, also known as RDBMs. In this article I will focus on hardware considerations and hard-drive selection, in particular. However it is good to mention all four areas and I see these as follows: Code: This covers the efficiency of in-line SQL. For instance, avoid Select * at all times, I see it as never justifiable and the difference in performance between explicitly naming every column in a table and using Select * is dramatic; Select * can levy a 10-12 times performance (translate)

The Scotch Come Down To London

There is hardly anything worse to do than to call a native of Scotland "Scotch".  It is at best a double insult, first of all it could be seen to demean one of the world's greatest spirits - Scotch Whiskey and secondly the correct term is "Scots" however in this case I think I dare say the wrong thing.  Sadly, CFDevcon a well anticipated conference scheduled for late September in Brighton, England had to be cancelled at the last minute.  The organizers put a lot of effort into making it fly but alas they were unable to do so.  So (translate)

How Can We Effectively Emulate Load on Web 2.0 - RIA Applications?

I started this blog post yesterday whilst en-route to Atlanta GA from the BFusion-BFlex conference in Bloomington, IN and noted where I was as I wrote...  I am currently sitting in Indianapolis airport after a really great conference, well conferences; BFusion and BFlex in Bloomington Indiana.  Bloomington is a beautiful town and Indiana University has an very impressive campus and even nicer set of people headed up by Bob Flynn.  As Dan Wilson said, as we headed back to the airport, this was a top-class community event and the fact that it was free is marvelous for all of us.So (translate)

Blog Posts On Clustering - Tuning and DataBase Design

Whilst at a client site recently, I was asked to provide a list of articles I had written on various blogs that could still be considered relevant and possibly useful. So I am taking a little time to put them all in one place and hope they could be of use to someone.  I am trying to group them as meaningfully as I can.Clustering and HAThe Tiers Of A Clone - High Availability Considerations: This is an introduction to some concepts relating to high availability (HA) in web applications...High availability clustering ColdFusion: Using ColdFusion Enterprise Manager: This is a piece (translate)

The Tiers of a Clone - Part Two (Warning, this is controversial)

As a point of note I am writing this on a Virgin High Speed Train going from Preston, Lancashire to London Euston, this is the way to travel in my opinion, much more comfortable than flying, much less hassle and unlike driving, no traffic! Quite some time ago I wrote a piece detailing the traditional approach to building out N-Tier application architectures, that article can be found here.   From the client-server world forward, it is typically accepted that for applications to be fault-tolerant and scalable, that they should have multiple tiers of infrastructure.  I  believe the ongoing emergence and proliferation of 64 bit architectures might (translate)

Why Are We Still Wasting Gas (Petrol) Traveling To Offices

Why are we still needing to travel to offices daily? I live in Los Angeles and we have a huge traffic problem, of course we are not alone with that problem in LA. It intrigues me that after all the pontificating and rhetoric from both Obama and McCain (in the US elections) about reducing dependence on oil, the concept of telecommuting is hardly mentioned. Recently I took a driving trip from Los Angeles to a city called Lake City in Colorado, for the record, Lake City is tranquil and the drive to it, idyllic. I had someone drive for me, (translate)

Shared Memory Scoped Variables and Clustering

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Sun Java (JVM) 6 Update 10 Released - Application Donations?

It appears that Sun officially released the Java 6 update 10 JVM today and this is the one which supposedly fixes the class loader problem which caused a lot to roll back to version 5.  If anyone wishes to donate an front-end heavy application with loaded database scripts for either SQL Server or MySQL I am prepared to test that in our labs and publish results.  Of course the names will be changed to protect the innocent!. (translate)

Application Engineering and Troublehooting with Mind Mapping

The work I do on legacy applications tends to fall into two major areas; the server side with things such as metrics logging, verbose garbage collection logging and the use of SeeFusion and, of course, the code side. It is the last part, the code, that I will discuss in this blog piece.Since working at Allaire back in the late 90's I have encountered literally 100's of ColdFusion applications some using formal frameworks such as mach-ii, ModelGlue FuseBox, ColdSpring, Transfer and Reactor, some using internally created frameworks. I have worked on MVC frameworks, front controller, page controller, valueobject and many (translate)

Is The Future of Ajax In Any Danger?

I read a compelling article today from Joel Spolsky.  It revolves around Internet Explorer 8 and web standards, which as Joel Spolsky contends are more of a nice theory than a reality (standards that is).  What really stuck in my mind is the complete mess that Google Maps becomes when viewed in IE8 with strict standards applied.  In addition, I have hit so many web sites with JavaScript errors it is not funny and IE8, in; let's call it strict web standards mode, would render so many sloppily coded web sites unusable. My headline is not meant to be attention (translate)

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