Archive for the ‘Technology’ Category

Notes On Coupling

I found some notes I took in 2004 at a lecture I attended on coupling. It may have been a lecture Dave Thomas gave at CJUG. Decoupling your code: coupling: you can change something, and something else changes too Methods calling methods: hard to understand, hard to maintain, hard to re-use. Symptoms: Minor change recompiles [...]

Design Pattern Notes

On 2004-06-24, Alan Shalloway of Net Objectives gave a talk on design patterns at my then-employer. Here are my notes. 2004-06-24 – Patterns Net Objectives -> Alan Shalloway, author of "Design Patterns Explained" Boeing: Great internal education Gang Of Four: Difficult book to understand GOF: Using terms differently AS: Looking at patterns differently, will also [...]

Data Sizes

I read an article from a few months back in Business Week about cloud computing. There was a chart about the size of data. A binary digit is a bit 8 bits is a byte 1,000 bytes is a kilobyte 1,000 kilobytes is a megabyte 1,000 megabytes is a gigabyte 1,000 gigabytes is a terabyte [...]

PostgreSQL Notes

I volunteered to help out with a couple of open source Ruby projects. One of them is using PostgreSQL. I had some trouble getting it working. One of the things I did not like about it is that it looks like I can only become the postgres user by becoming root first. I suppose I [...]

Comcast IP6 Site

Comcast has a site about their transition to IPv6: http://www.comcast6.net/.