Download e-book for kindle: Cloud Data Management by Liang Zhao

By Liang Zhao

ISBN-10: 3319047647

ISBN-13: 9783319047645

ISBN-10: 3319047655

ISBN-13: 9783319047652

In perform, the layout and structure of a cloud varies between cloud prone. We current a widely used assessment framework for the functionality, availability and reliability features of assorted cloud structures. We describe a conventional benchmark structure for cloud databases, particularly NoSQL database as a provider. It measures the functionality of replication hold up and financial price. provider point Agreements (SLA) signify the agreement which captures the agreed upon promises among a merchant and its shoppers. The standards of latest provider point agreements (SLA) for cloud prone should not designed to flexibly deal with even quite trouble-free functionality and technical specifications of patron purposes. We current a singular strategy for SLA-based administration of cloud-hosted databases from the patron point of view and an end-to-end framework for consumer-centric SLA administration of cloud-hosted databases. The framework allows adaptive and dynamic provisioning of the database tier of the software program functions in response to application-defined regulations for gratifying their very own SLA functionality requisites, heading off the price of any SLA violation and controlling the financial rate of the allotted computing assets. during this framework, the SLA of the shopper functions are declaratively outlined when it comes to ambitions that are subjected to a few constraints which are particular to the applying standards. The framework constantly displays the application-defined SLA and instantly triggers the execution of important corrective activities (scaling out/in the database tier) whilst required. The framework is database platform-agnostic, makes use of virtualization-based database replication mechanisms and calls for 0 resource code adjustments of the cloud-hosted software program purposes.

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It may be managed by the organization or a third party and may exist on premise or off premise. A private cloud offers the highest degree of control over performance, reliability and security. However, they are often criticized for being similar to traditional proprietary server farms and do not provide benefits such as no up-front capital costs. 16 2 Cloud Computing 2. Community cloud. , mission, security requirements, policy, and compliance considerations). 3. Public cloud. g. Amazon, Google, Microsoft).

However, cloud computing takes one step further by leveraging virtualization technologies to achieve on-demand resource sharing and dynamic resource provisioning. 14 2 Cloud Computing Utility Computing Utility computing represents the business model of packaging resources as a metered services similar to those provided by traditional public utility companies. In particular, it allows provisioning resources on demand and charging customers based on usage rather than a flat rate. The main benefit of utility computing is better economics.

Not every application requires rigid data consistency). g. eBay, Amazon, Twitter, Facebook), scalability and high availability are essential requirements that can not be compromised. For these applications, even the slightest outage can have significant financial consequences and impacts customers’ trust. In general, the CAP theorem [86, 138] and the PACELC model [57] describe the existence of direct tradeoffs between consistency and availability as well as consistency and latency. For example, the CAP theorem shows that a distributed database system can only choose at most two out of three properties: Consistency, Availability and tolerance to Partitions.

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Cloud Data Management by Liang Zhao

by Kenneth

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