Stateful applications (transactional, high-performance and data-intensive) are growing at an increasing pace, solving scalability and high performance issues are a prime concern of application designers and developers. In this article, we suggest a novel approach in which applications are divided into smaller processing units, and present a Market-Oriented Cloud Computing (MOCC) development and...

We present Chandra X-ray images and spectra of the most prominent cloudshock interaction region in the Puppis A supernova remnant. The Bright Eastern Knot (BEK) has two main morphological components: (1) a bright compact knot that lies directly behind the apex of an indentation in the eastern X-ray boundary and (2) lying 1 westward behind the shock, a curved vertical structure (bar) that is sep...

We propose that the mushroom-shaped structure of the Galactic worm GW 123.4–1.5 is created by a cloud collision with the Galactic gas disk. A hydrodynamic simulation shows that a mushroom-shaped structure is created after the cloud crosses the Galactic midplane. The lifetime of the mushroom-shaped structure is of order the dynamical time scale of the disk, ∼ 10 years. We find that the velocitie...

The limitations of distributed systems to satisfy the combination of consistency, availability and network partitioning tolerance requirements are well-documented and formally proven. There is however a limited amount of works discussing the impact of these limitations on designing applications native to the Cloud. This work addresses this particular need by proposing an approach for considerin...

Power efficiency is pressing in today’s cloud systems. Datacenter architects are responding with various strategies, including capping the power available to computing systems. Throttling bandwidth has been proposed to cap the power usage of the disk drive. This work revisits throttling and addresses its shortcomings. We show that, contrary to the common belief, the disk’s power usage does not ...

One of the challenges of cloud programming is to achieve the right balance between availability and consistency in a distributed database. Cloud computing environments, particularly cloud databases, are rapidly increasing in importance, acceptance and usage in major applications, which need the partition-tolerance and availability for scalability purposes, thus sacrificing the consistency side ...

One of the challenges of cloud programming is to achieve the right balance between the availability and consistency in a distributed database. Cloud computing environments, particularly cloud databases, are rapidly increasing in importance, acceptance and usage in major applications, which need the partition-tolerance and availability for scalability purposes, but sacrifice the consistency side...