My Initial Impressions of Scala

I am going to be using the Scala programming language for some upcoming projects. This will be my first time using a functional programming language and my first time developing for the JVM. Up to this point in my career, I've primarily used C++ and C#. I'm looking forward to…

Interviews for Programmers Should Involve Code Review

I have been part of the interviewing team for my employer for over a decade. Over this time, I've conducted hundreds of technical interviews for programmers. By far the best advice I've ever read on technical interviewing is Joel Spolsky's The Guerrilla Guide to Interviewing. This is an essay I've…

The Most Difficult Bug I Have Encountered

I was asked, recently, to recount the most difficult bug that I have ever encountered. I have worked on distributed systems for some time, including a multi-threaded, distributed system written in C++, which is used in diverse and demanding industrial environments. So, needless to say, I’ve encountered more than…

Be More Productive By Not Finishing Your Work

When I complete something that I'm working on, rather than calling it a day, I usually start on the next thing. Not in the hopes of finishing a great deal more work, usually it is just to get a feel for what is in store next. Nothing is more fulfilling…

Considering Time in a Streaming Data System

For over a decade, I have worked on infrastructure software for streaming data systems. My experience includes developing and supporting time-series databases, publish-subscribe messaging systems for streaming data, and software for reliable event-data collection. As they are embraced by web companies for making operational and business decisions on-the-order of minutes…

Test Driven Career Development

I started this blog a year ago with the intention of sharing some of my work. I think it has gone roughly according to plan. I'm satisfied that I averaged an essay a month — that feels about right for me. Looking back, there are things I would change, but…