Günther Gerlach

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written by gunther gerlach-2009

Amazon’s Elastic Compute Cloud (EC2) allows the imaging of servers and the use of web services to provision these images on specified virtual platforms. It currently allows a range of basic, to intermediate, to high-performance spec’ed platforms and these are priced on an hourly basis.

Using the Amazon Simple Storage Service (S3) a complete application environment can be provisioned from the stored images in a short period of time, used for a defined purpose and period, and then decommissioned.

 

The main challenges that remain for Cloud Computing

Gunther Gerlach

written by gunther gerlach-2009

Quick definition: Cloud Computing is an Internet based platform geographically distributed and developed to provide real-time scalable resources and provided “as a service” over the Internet to users who don’t need to have deep knowledge or expertise on technology infrastructure. The concept incorporates software as a service (SaaS), and other well-known technology trends.

Cloud computing services span a wide scope, from virtualized low-level computing and storage to full business services. Understanding the spectrum of cloud services and the characteristics of each service category is essential in determining when, where, how and why to apply cloud computing.

Gunther Gerlach

written by gunther gerlach-2009

Velocity is a measurement of how much the team gets done in an iteration (called as Sprint in Agile Scrum). Velocity is what actually got done in the last iteration not what is planned and is calculated by the number of story points done in a certain sprint.

In Scrum it is measure in Story points. Each feature in scrum is a story. A story has points. Points can be anything you come up with.

Examples are 1, 2, 4, 8 , 16

Gunther Gerlach

written by gunther gerlach-2009

In Agile Scrum management process, there are few needs to happen for the sprint (iteration) to be called done. There are at least three types of Definitions of done.

 

Story Definition of done

·      A Story definition of done would look like this.

·      All stories should have automated acceptance test.

·      The story should have working code supported by unit test that provide around 60 – 70 percent coverage.

·      The story should have well defined acceptance criteria.

Gunther Gerlach

written by gunther gerlach-2009

An XP practice where two programmers work alongside each other, trying to get a task accomplished. Two minds at one problem!

 

How this help?

 

·         It brings up productivity if the pair knows what it is up to. A chatty pair can cause more damage to the project than getting done

·         It keeps each person honest. If you don’t know something its apparent in the fifth minute.

·         It helps keep the quality of the code. Since the pair is helping code.

·         This is where design happens.

Gunther Gerlach