Tips for debugging .htaccess rewrite rules
This is a repost of one of my articles on StackOverflow. Many posters have problems debugging their RewriteRule and RewriteCond statements within their .htaccess files. Most of these are using…
A quick point about timing
I've just deployed my V3 blog engine to live. In doing so, the time per query jumped from <10 mSec per query to ~2.5s — which meant that the typical page…
More fun with the Webfusion configuration
This is a follow-up to my article on building a Webfusion test VM. My aim is to create a test environment which reflects my Webfusion environment at a file system…
Creating a test VM to mirror the Webfusion Shared Service
In previous articles I have discussed how difficult it is for users of a shared web hosting service such as Webfusion's to develop and to debug applications on a service…
Oh, the embarrassment!
I’ve just discovered a bug in my blog: any comment posts get thrown into the bit-bucket and are never passed to me for acceptance / publishing if the user making…
More on using Rewrite rules in .htaccess files
This article is a further discussion how to use rewrite rules on a shared hosting service (SHS) such as the one supplied by Webfusion and that I use. It develops…
The Anatomy and Timing of a Web Request – Part II
In Part I of this analysis, I looked at the overall timeline of viewing a webpage, and my main recommendations were: The correct webserver configuration is essential to ensure that…
The Anatomy and Timing of a Web Request – Part I
My academic background was mathematics, specialising in operations research and statistics. I put this to good use when I first started my career in an IT consultancy, in working one…
phpBB Performance – Reducing the script load overhead
This is the third in a series of phpBB performance articles and in this one I want to investigate how feasible it would be to use code globbing to reduce…
phpBB Performance – Reducing the data cache overhead
As I described in a previous article, you can use Linux utility strace to instrument a web request simulation and suPHP model. sudo -u www-data strace -tt -o /tmp/strace.log php…