I was frustrated by the gap between stateless and stateful applications in the cloud. While I could easily spin up a stateless application as a “serverless” function in any major cloud provider and pretty much forget about it, persisting data between requests was a game of pick two among three: cheap, strongly consistent, portable. Could I solve portability and lack of transactions myself with a single client-side solution? I thought it would be possible through object storage (e.g. AWS S3), which is strongly consistent, ubiquitous and cheap. ...
What is a design document? When is it useful to have one? How to make it useful? These are the questions I’m going to address in this post. The goal is to provide some bite sized, easy to remember guidelines. My promise to you is that after this post, you’ll be faster and more effective in making and reviewing designs. This is a written version of a talk I gave at my current employer. Since it was well received and helped a few folks, I decided to make it more available. ...
Running a Site Reliability Engineering (SRE) organization correctly is difficult and expensive. Spare the frustration, perhaps what you need is Sysadmins. Since the term was coined by Ben Treynor in 2003 at Google, lots of ink was spent on praising SRE practices. Not enough on when it is appropriate to have SREs. This post is a take on that angle. Disclaimer: I was an SRE at Google and this piece represents only my own views. ...
This is the story of me trying to win a game of chess against my brother. A single freaking game. What’s so special about it? Am I good at chess? Not at all. Did I improve at my game in the process? Also no. Is it a story about “the journey rather than the destination”? Not really. Did I at least have fun in the process? Not so sure. This is the story of me trying to be unconventional at probably the most studied game in existence and using my software engineering background for something that probably doesn’t need it. ...
Over the last year, at work I had multiple chances to debug how containers work. Recently we had to solve some networking problems a customer had with Kubernetes, and I decided I wanted to know more. Once the problem was solved, I spent more time on investigating what is actually going on under the hood. After seeing the wonderful Eric Chiang and Laurent Bernaille talks, and reading through the very informative posts by Lizzie Dixon and Julia Evans (that I really really recommend), I got enough information about how a container is created and managed. I’m going to rip off and mix some stuff from their awesome posts in the first part of mine. ...