Content Delivery Networks

Posted on June 16th, 2010 by Victoria Pal in Tech

Content Delivery Networks / CDN9Almost all of us enjoy the benefit of a Content Delivery Network, whether we realize it or not. Content Delivery Networks (CDN) also referred as Content Distribution Networks is what you call a system of network hardware containing copies of data located in various geographical locations, depending on the local demand from clients requesting the resources.

Content delivery networks are especially useful for delivering rich media content to users from different geographical locations, avoiding delay and bandwidth overload near the main server. CDNs can contain all types of data, but most often they are used to distribute data which demands high bandwidth. A few rough examples are downloadable software, media files and documentations, multimedia streams, online games as well as database queries, etc.

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DDoS Attack

Posted on June 15th, 2010 by Victoria Pal in Tech

DDoS attackThe end goal of Denial-of-service attack (DoS attack) or distributed denial-of-service attack (DDoS attack) is to make a resource unavailable to its users. The attack can be carried out on different levels, depending on the target and people involved. In essence, the attack represents a highly intense attempt by one person or more to hinder web sites or specialized internet services from running properly, causing financial losses to the owner of that resource.

Depending on the motivation behind the attack, different targets might suffer from it. The attack can be implemented by a single person, carrying out a personal agenda. Such an attack is highly unlikely to cause too much trouble and will only be temporary. A much bigger problem are organized attacks performed by a group of individuals in pursuit of financial gains. Such attacks can be sustained for longer periods of time and might as well ruin companies relying on online presence. Banks, online retailers, government sites, payment gateways and even root nameservers can become easy prey for organized DDoS attacks.

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Energy Efficient and/or Cost Effective

Posted on June 9th, 2010 by Victoria Pal in Tech

Intel released a new microserver last fall. It is quite small and features a 1.86GHz Quad-Core processor and four memory slots. It consumes 45watts when flat-out, however a 30watt dual-core version was due to be released Q1 2010. Intel's goal is to have a to have a micro server running on 25watts when idle.

Intel's microserver

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Improve Your Website

Posted on June 8th, 2010 by Victoria Pal in Tech

Improve you websiteA site can be improved in many ways and on many levels - accessibility, usability, design, organization, promotion, loading times, availability and many more. This post is only concerned with several quick fixes, which are mostly technical, but once in place they can really make a difference.

Generate Fewer HTTP Requests

80% of the end-user response time is spent in downloading page components: html, images, stylesheets, scripts, Flash, etc.

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Powered By Nature

Posted on June 3rd, 2010 by Victoria Pal in Tech

Natural power sourcesMore and more companies are becoming environmentally alert and try to minimize their carbon footprint. It is "the big new thing" for more than a decade. The IT sphere, being first in expansion and new technology adoption, is determined to go green. Datacenters and servers in the US alone represent more than 1.5% of America's electricity consumption (61 billion kilowatt-hours). A percentage which is about to double by 2011. This is a major expense to all companies, using this equipment.

Sunlight

A California based company by the name of AISO.net (Affordable Internet Services Online) is 100% dependent on solar energy. All their web servers are powered by sunlight. They don't consider that enough and go further by using Coolerado air conditioners. Water is evaporated into air in one chamber within the air conditioner, and this cools the air flowing in an adjacent chamber. Water vapor in the exhaust air holds the heat and is used for cooling the solar panes, increasing their efficiency by 15%. Their entire building is painted white, to fight of the "heat island effect". Natural light is spread through the building, compensating for artificial light, during the day. You can check AISO.net to learn about the ways the are harnessing the gifts of nature.

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