Upgrade FC4 to FC5 with yum
I recently upgraded a bunch of FC4 (a few FC3) installs to FC5 using yum. It has been a long time since I’ve tried doing an OS upgrade like this because it u...
Recent Posts
Cleaning up stale rails sessions (removing ruby_sess files)
I’m not sure if something isn’t set up correctly of if this is just a fact of life with rails but the sessions it creates never seem to go away. I think befo...
Creating S3 URLs that expire using PHP
After reading this post on the S3 forum I realized that other people are thinking about doing some of the same stuff I have. paolonew was looking for a way t...
Free geocoding
I’ve had opertunities to work with a number of different GIS packages in the past (see my post comparing a few). Most of them are great but they all cost a l...
Search Engine Optimization
Recently I’ve been collecting links on interesting SEO topics. I figured I would dump a few of them out with quick reasons why I think they are good to read.
How to build the PHP rrdtool extension by hand
I think by now most sysadmin types know about rrdtool and the nice graphs it makes. I recently wanted to create some graphs by hand using PHP so I turned to ...
Converting unix or java timestamps (time since the epoch) to real dates with Oracle
A few days ago I made use of a couple Oracle built in functions and it made me happy I didn’t have to write a stored proc or some type of mini-app to do it. ...
Thread pooling with Java concurrency utilities new (java 1.5) and old (util.concurrent)
Java Concurrency in Practice Threading in java is fairly easy and now with java 1.5 some of the stuff that was harder has become even easier. A few years ago...
Good Techcrunch review of mapping apis
Techcrunch has a good review by Frank Gruber of the look and feel of mapping services. I think it is notable that ESRI’s service is not included in the revie...
Approximating a circle with a polygon
I recently had an opportunity to use ESRI’s ArcSDE again. It is a spatial database interface and in this instance I was using the java api. I wanted to chang...