Our applications not only need to be functional, they need to be fast. But, to quote Donald Knuth, premature optimization...
When working with PostgreSQL, you can use pgAdmin as a GUI. While you can do most things just like on...
Article shows how to make a script that fakes one kind of content when printed with cat, but uses different...
As the web is being used for more and more tasks, expectations rise. Not only should web pages offer rich...
In the DevTools settings, there's a "Shortcuts" section. Found these keyboard shortcuts there: General ESC Toggle drawer
This is how you regain disk space from OpenStack instances if you are using kvm and qcow. If your instance...
PhantomJS has no binary builds for Linux, and building it yourself is painful. However, you can install it through npm...
If you need a postgresql extension for your database it isn't a good idea to give your applications database...
Each time thin boots, it prints a boot message : Thin web server (v1.6.3 codename Protein Powder) Maximum connections set to...
MarcoPolo shows your app name and environment in your console prompt so you don't accidentally break production Officially supporting...
To change RAM size, VDISK size or VCPU count of an openstack instance you have to use nova resize. You...
If you see a stacktrace beginning with lines like this: E, [2015-07-16T09:23:10.896146 #23308] ERROR -- : app...
Large projects usually have large test suites that can run for a long time. This can be annoying as running...
Since version 2.6 exception notifier distinguishes between foreground and background sections. The reason is that with background jobs (e.g. methods...
Note: Making a reverse proxy with nginx is much more straightforward. A reverse proxy is a "man in the middle...
sslscan is a nice tool to show details about TLS/SSL connections: ~> sslscan some-host-at.makandra.de Testing SSL server some-host-at.makandra.de on port 443...
Capistrano 3 is a major rework of the framework and requires several adjustments to your deploy configuration files. The biggest...
When using Savon to connect a SOAP API, you may want to use Savon::SpecHelper to mock requests in your...
After adding a vdisk to an ESXi linux guest you will assert that you can't find a new device...
You might wonder about this request in your test.log: Started GET "/__identify__" for 127.0.0.1 at 2015-04-29 18:00...
Starting from Rails 4.0, you can use a special form options helper called #collection_check_boxes. It behaves similar to...
When ending a Selenium test Capybara resets the browser state by closing the tab, clearing cookies, localStorage, etc.
There are some frontends available, but they all suck, are no longer maintained or are hard to install.
You know that ActiveRecord caches associations so they are not loaded twice for the same object. You also know that...