Dew helps ground cloud computing

September 15, 2015

The most obvious disadvantage of putting your data in the cloud is losing access when you have no internet connection. According to research publishes in the International Journal of Cloud Computing, this is where "dew" could help. Yingwei Wang of the Department of Computer Science, at the University of Prince Edward Island, Charlottetown, Canada, describes what he refers to as a "cloud-dew" architecture that offers an efficient and elegant way to counteract cloud downtime and communication difficulties.

In the world of cloud computing, users and organizations keep their data in the cloud, users access the data from their computer, which means their data is mobile and can be accessed from any computer...but only as long as an internet connection is available. The problem with this arrangement is that the user relies heavily on an internet connection and the cloud servers, Wang explains. "If any problem happens with the servers or an internet connection is not available, the user cannot access their data," he says.

When a user has lots of complex data, the task of keeping it in sync manually between the cloud and local computers is anything but trivial. Wang's architecture follows the conventions of cloud architecture but in addition to the cloud servers, there are dew servers held on the local system that act as a buffer between the local user and the cloud servers and avoid the problem of data becoming out of sync, which happens if one simply reverts to the old-school approach in which data is held only on the local server whether or not it is networked. "The dew server and its related databases have two functions: first, it provides the client with the same services as the cloud server provides; second, it synchronizes dew server databases with cloud server databases," explains Wang.

The dew server is a lightweight local server that retains a copy only of the given user's data making it available with or without an internet connecting and syncing once more with the cloud server as soon as a connection is available once more. The same cloud-dew architecture might also be used to make websites available offline. Such a system could reduce the internet data overheads for an organization that has intermittent or throttled internet connectivity. Obviously form filling or email exchange is not possible without the internet connection but many functions such as displaying files and images, playing audio or video would be possible provided the data had been synced to the "dewsite" from the web during the last connection period.
Wang, Y. (2015) 'Cloud-dew architecture', Int. J. Cloud Computing, Vol. 4, No. 3, pp.199-210.

Inderscience Publishers

Related Cloud Computing Articles from Brightsurf:

Turbulence affects aerosols and cloud formation
Turbulent air in the atmosphere affects how cloud droplets form.

Using cloud-precipitation relationship to estimate cloud water path of mature tropical cyclones
Scientists find the cloud water path of mature tropical cyclones can be estimated by a notable sigmoid function of near-surface rain rate.

Analysis of human genomes in the cloud
Scientists from EMBL present a tool for large-scale analysis of genomic data with cloud computing.

Quantum cloud computing with self-check
With a quantum coprocessor in the cloud, physicists from Innsbruck, Austria, open the door to the simulation of previously unsolvable problems in chemistry, materials research or high-energy physics.

Storage beyond the cloud
As the data boom continues to boom, more and more information gets filed in less and less space.

The secret life of cloud droplets
Do water droplets cluster inside clouds? Researchers confirm two decades of theory with an airborne imaging instrument.

Cloud computing load balancing based on ant colony algorithms improves performance
The criticality of certain sectors, as well as the requirement of users, involve Cloud providers to guarantee a high level of performance.

Army researcher minimizes the impact of cyber-attacks in cloud computing
Through a collaborative research effort, an Army researcher has made a novel contribution to cloud security and the management of cyberspace risks.

'Cloud computing' takes on new meaning for scientists
Clouds may be wispy puffs of water vapor drifting through the sky, but they're heavy lifting computationally for scientists wanting to factor them into climate simulations.

Space cloud discovery
No one has ever seen what Case Western Reserve University astronomers first observed using a refurbished 75-year-old telescope in the Arizona mountains.

Read More: Cloud Computing News and Cloud Computing Current Events is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to