How to simplify some scenarios in testing by applying simple bitwise operations.

A simple tip on how to quickly get a slave in sync again when replication stops and there is no need to rebuild the slave.

If you use Resque for your background jobs, and have to manually intervene when workers get stuck or jobs fail for some reason, you might find this tip useful.

In this follow up I'll mention a few commands that I use to do basic management of my KVM virtual machines - things such as backups, cloning VMs and more.

In this post I describe the environment and tasks I am currently using to manage virtual machines for development, testing and fun. The setup involves KVM as hypervisor and using an LVM-based storage pool for storing the virtual machines; instructions are based on Ubuntu as OS.

In RSpec it is possible to define special custom matchers that enable us to test with a neat syntax what happens when some code is executed, while also helping reduce duplication.