Dr. Dobb's is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them. Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Channels ▼


Q&A: Clouds of Distribution

Erik Troan is CTO at rPath, a company that delivers enterprise applications across cloud-based environments. He recently spoke with Dr. Dobb's editor in chief Jonathan Erickson about the rapidly changing world of distributed computing.

Dr. Dobb's: How has the advent of cloud computing changed distributed computing?

Troan: Distributed computing is all about modular deployments, where each type of node can be scaled independently of the others. Deploying that into environments that allow on-demand scaling of each node allows properly designed distributed architectures to flexibly scale themselves and adjust to the changing demands of their users. On-demand environments like clouds are poised to become the default deployment environment for distributed and scale-out compute infrastructures.

Dr. Dobb's: How far can developers go with lightweight "mashup" style tools when it comes to distributed computing?

Troan: Mashup tools are highly relevant today. Human beings do a good job of breaking tasks into components that feed each other; we do a poor job of dividing up tasks into pieces that need to share a single resource. Mashups of components using distributed environments allow scalable applications to be built quickly in a way most people are comfortable architecting.

Dr. Dobb's: Are distributed computing environments relevant?

Troan: I don't think DCEs are even remotely relevant any longer. Web technologies, including XML, SOAP, and REST, have completely displaced those efforts in mainstream architecture. Simple, standard interfaces allow applications to be built much more quickly across organizational boundaries than anything as complex as DCE or CORBA.

Dr. Dobb's: Have large-scale distributed computing projects such as [email protected], [email protected], and the like helped us solve any day-to-day distributing computing problems, or are they simply academic exercises?

Troan: Projects like [email protected] have encouraged IT organizations to look at the spare computing capacity they have spread out across thousands of desktop machines as a resource they could tap to solve compute problems. I know organizations are exploring virtualization as a low-impact way of harnessing those machines.

Related Reading

More Insights

Currently we allow the following HTML tags in comments:

Single tags

These tags can be used alone and don't need an ending tag.

<br> Defines a single line break

<hr> Defines a horizontal line

Matching tags

These require an ending tag - e.g. <i>italic text</i>

<a> Defines an anchor

<b> Defines bold text

<big> Defines big text

<blockquote> Defines a long quotation

<caption> Defines a table caption

<cite> Defines a citation

<code> Defines computer code text

<em> Defines emphasized text

<fieldset> Defines a border around elements in a form

<h1> This is heading 1

<h2> This is heading 2

<h3> This is heading 3

<h4> This is heading 4

<h5> This is heading 5

<h6> This is heading 6

<i> Defines italic text

<p> Defines a paragraph

<pre> Defines preformatted text

<q> Defines a short quotation

<samp> Defines sample computer code text

<small> Defines small text

<span> Defines a section in a document

<s> Defines strikethrough text

<strike> Defines strikethrough text

<strong> Defines strong text

<sub> Defines subscripted text

<sup> Defines superscripted text

<u> Defines underlined text

Dr. Dobb's encourages readers to engage in spirited, healthy debate, including taking us to task. However, Dr. Dobb's moderates all comments posted to our site, and reserves the right to modify or remove any content that it determines to be derogatory, offensive, inflammatory, vulgar, irrelevant/off-topic, racist or obvious marketing or spam. Dr. Dobb's further reserves the right to disable the profile of any commenter participating in said activities.

Disqus Tips To upload an avatar photo, first complete your Disqus profile. | View the list of supported HTML tags you can use to style comments. | Please read our commenting policy.