Posts
Speeding up Rails and RSpec
A few tips on how to reduce Rails boot time, and speed up both assets compilation and RSpec specs.
Apache Cassandra: Getting started
How to set up and use an Apache Cassandra cluster.
Manage active sessions in Rails
In an app I’m working on, I wanted users to be able to manage active sessions and sign out from any device they are signed in on, by invalidating logins. There’s a gem called authie that does this so you may want to…
Systemd timers configuration in Gentoo
Yesterday I configured backups with duplicity on a couple of servers using a 3rd party service, rsync.net, as the backup destination; since I am a little paranoid with backups I also wanted to schedule a daily task on my computer…
Postfix SMTP relay configuration in Gentoo
A Postfix SMTP relay configuration can be useful in several scenarios. Sometimes, for example, I want to have some email notifications sent to my email address by my computer at home, for example to receive reports of some…
Migrate Google Analytics properties to another account
There are several reasons why you may want to migrate Google Analytics properties from an account to another. For example, I’ve had two Google Analytics accounts for a few years now, the first one with just one property…
Installing Gentoo on MacBook Pro
I recently decided to switch from OSX to Linux and went with Gentoo, so this post describes how install Gentoo on MacBook Pro. IMO the installation isn’t as complicated and difficult as many think it is, so I eventually…
Let’s Encrypt certificates with Nginx
SSL certificates can be quite cheap these days, but nothing beats free, and in this post I will show you how to use Let’s Encrypt certificates with Nginx (back in early 2011, I wrote a post on the most common reasons why…
Ubuntu server for Ruby and PHP apps
There are several guides on the Internet on setting up Ubuntu server, but I thought I’d add here some notes on how to set up Ubuntu server for Ruby and PHP apps at the same time. Ubuntu’s latest Long Term Support…
CentOS Parallels VM network configuration
This is how I fixed an issue with networking in CentOS Parallels virtual machines . Basically, after cloning the template, the clones appear to report only the loopback interface and one eth interface which seems to be inactive…