Software Engineering

Start an instance on an internal cloud, then with the same code start another on EC2 or Rackspace. Deltacloud protects your apps from cloud API changes and incompatibilities, so you can concentrate on managing cloud instances the way you want.

Deltacloud Core gives you:

REST API (simple, any-platform access) Support for all major cloud service providers Backward compatibility across versions, providing long-term stability for scripts, tools and applications One level up, Deltacloud Aggregator provides a web UI in front of the Deltacloud API. With Deltacloud Aggregator, your users can:

View image status and stats across clouds, all in one place Migrate instances from one cloud to another Manage images locally and provision them on any cloud

Pig is a platform for analyzing large data sets that consists of a high-level language for expressing data analysis programs, coupled with infrastructure for evaluating these programs. The salient property of Pig programs is that their structure is amenable to substantial parallelization, which in turns enables them to handle very large data sets.

At the present time, Pig's infrastructure layer consists of a compiler that produces sequences of Map-Reduce programs, for which large-scale parallel implementations already exist (e.g., the Hadoop subproject). Pig's language layer currently consists of a textual language called Pig Latin, which has the following key properties:

Ease of programming. It is trivial to achieve parallel execution of simple, "embarrassingly parallel" data analysis tasks. Complex tasks comprised of multiple interrelated data transformations are explicitly encoded as data flow sequences, making them easy to write, understand, and maintain. Optimization opportunities. The way in which tasks are encoded permits the system to optimize their execution automatically, allowing the user to focus on semantics rather than efficiency. Extensibility. Users can create their own functions to do special-purpose processing.

Tell everyone about your releases! Send email notification after Capistrano deployments! Rule the world!

Drop your ActionMailer configuration information into your deploy.rb file, configure recipients for the deployment notifications, and setup the callback task.

Setup and configuration are done entirely inside your deploy.rb file to keep it super simple. Your emails are sent locally from the box performing the deployment, but CapGun queries the server to grab the necessary release info.

This even includes the Net::SMTP TLS hack inside as a vendored dependancy to allow super easy email sending without setting up an MTA.

php-judy is an exentsion by Nicolas Brousse for the Judy C library.

http://github.com/orieg/php-judy

A Judy array is a complex but very fast associative array data structure for storing and looking up values using integer or string keys. Unlike normal arrays, Judy arrays may be sparse; that is, they may have large ranges of unassigned indices.

http://en.wikipedia.org/wiki/Judy_array

Judy is a C library that implements a dynamic array. Empty Judy arrays are declared with null pointers. A Judy array consumes memory only when populated yet can grow to take advantage of all available memory. Judy's key benefits are: scalability, performance, memory efficiency, and ease of use. Judy arrays are designed to grow without tuning into the peta-element range, scaling near O(log-base-256) -- 1 more RAM access at 256 X population.

http://judy.sourceforge.net

Scrum is a framework with simple rules. This Scrum Checklist will help you to remember these simple rules in the heat of daily work and stress. It enable you to create an enjoyable and productive work environment with your Scrum-Team.

For Scrum Beginners - Follow the Checklists, do Scrum by the book.This will enable you to run you first 3 to 4 Sprints very successfully. Your success will facilitate to spread Scrum in your organization.

For Scrum Intermediates - Use your common sense to tweak your processes guided by these Scrum Checklists.

As an experienced ScrumMaster - Use Scrum Check- lists as your safety belt in stressful situations.

Scrum Checklists do not replace experience and practice. Scrum Checklists are not procedures that you have to follow. Scrum Checklists help to run a successful Scrum in a demanding environment.