If you get this error when you try to resize an OpenStack instance: # nova resize example 23 --poll
With this command you can initiate an application restart without touching restart.txt. Unlike touching restart.txt, this tool initiates the restart...
Internet Explorer on Windows 8 and 8.1 is available in a "Desktop version" and the metro version which is designed...
Your development machine is usually on a very good network connection. To test how your application behaves on a slow...
You might have a table without a primary key set in MySQL. You can fix this by adding a primary...
When you are working with Backbone models and inheritance, at some point you want to overwrite inherited methods but call...
I had a huge MySQL dump that took forever (as in: days) to import, while I actually just wanted to...
When you do something like this in your code: def var_value @var ||= some_expensive_calculation end
When you want to find out the data type of an attribute, you can just use ActiveRecord's columns_hash...
Ubuntu 12.04 LTS x64, Ruby 1.8.7, Rails 2.13, PDFKit 0.5.4, Phusion Passenger Apache 2 I ran into this, when I...
Weighttp is threaded and might exhaust resources of an application better than ApacheBench or httperf. You need libev installed.
Whenever you create a table from a database migration, remember to add updated_at and created_at timestamps to that...
Ubuntu has a package mysql-sandbox that lets you install multiple MySQL versions into your user home: Install mysql-sandbox...
Rails has always included a scaffold script that generates a default controller implementation for you. Unfortunately that generated controller is...
There may be reasons to change the locale of your Postgres cluster. A popular one is your development system's...
So you're switching to PostgreSQL from MySQL? Here is some help... General hints on PostgreSQL \? opens the command overview...
| Chrome | CTRL+Shift+J | | Firefox / Firebug | CTRL+Shift+L |
For all late night coders: The program "redshift" changes your monitors' white balance according to your position on the planet...
Consul 0.10.0 now allows multiple power mappings for nested resources. When using nested resources you probably want two power
When you're writing migrations that do more than changing tables (like, modify many records) you may want some output...
Box shadows are awesome. Unfortunately they are also very costly to render. You will rarely notice the rendering time on...
Consul 0.9 comes with many new features to optimize powers that only check access to a given record. e.g. Power.current.post...
Next time you have to do more than trivial CSS changes on a project, you probably want to have live...
Set the hash to a dummy hash which doesn't hit any id at your page, for example: window.location.hash = "_";