How to succeed at infrastructure automation
Hilzer's barbershop
Last time I wrote about the “Barbershop problem” from the “The Little Book of Semaphores”. Ian Dawes pointed out that the solution I presented can be further simplified: instead of having a gorotine dedicated to arbitrating the waitroom, make the channel b...
Optimize Go binary size
~21MB Well, I found yesterday that LogPacker Daemon weights about 21MB. This application is written in Go language, it’s really doing a lot of things, has built-in connectors to different Data-Storages, has Cluster solution inside, etc.
Working with Redis
In this post I'm going to be looking at using Redis as a data persistence layer for a Go application. We'll start by explaining a few of the essential concepts, and then build a working web application which highlights some techniques for using Redis in a concurrency-safe way....
Chaos Engineering: A Shift in Mindset
The barbershop problem
The second problem in the “Less classical problems” chapter of the “The Little Book of Semaphores” is called “the barbershop problem”. It as originally proposed by Dijkstra as “the sleeping barber” program. The book presents the pro...
Flag-oriented Programming
booleans, am I right? What a wonderful piece of technology! They help us solve so many problems… I just need this method to behave slightly different when some condition is true. Nice, what’s the problem in that? We had a method like this: class Coffee def initialize...
Chaos Engineering 101
Dining savages
In chapter 5 (“Less classical problems”), the “The Little Book of Semaphores”, starts by presenting the “dining saves problem”, introduced by Gregory Andrews in the book “Concurrent Programming: Principles and Practice.” A tribe of...
Quiz yourself in Golang. Part 1
30 basic questions to measure your Golang knowledge. Answers and .go files you can find on GitHub page. Don’t hesitate to create a Pull Request in case of some found errors, typos.