Multi-tenancy in the cloud: Why it matters. Whether an IT organization is going with public or private clouds, it's important to understand the nuances of multi-tenant architecture. For public clouds, IT managers need to understand the degree of multi-tenancy supported by whichever vendor they are looking at. For private clouds, the entire responsibility of designing a multi-tenant architecture rests with the IT managers. Enterprise cloud adoption has gone beyond the levels of intellectual pursuits and casual experimentation. An analysis by IDC shows that $17 billion of the $359 billion of worldwide IT spending for 2009 could be attributed to cloud computing.
Two-thirds of Baseline magazine's survey participants plan to expand their use of public clouds. None of that is to say that there aren't nagging issues, including but not limited to how different enterprise workloads match up against different types of clouds and responsible ways to plan and implement the necessary migrations. Multi-tenancy defined Degrees of multi-tenancy. Oracle - Virtual Technology Summit. DISA cloud sec guide v1r0 36.
Virtualization and Cloud. 100 Useful Tips and Tools to Research the Deep Web. By Alisa Miller Experts say that typical search engines like Yahoo! And Google only pick up about 1% of the information available on the Internet. The rest of that information is considered to be hidden in the deep web, also referred to as the invisible web. So how can you find all the rest of this information? Meta-Search Engines Meta-search engines use the resources of many different search engines to gather the most results possible. SurfWax. Semantic Search Tools and Databases Semantic search tools depend on replicating the way the human brain thinks and categorizes information to ensure more relevant searches. Hakia. General Search Engines and Databases These databases and search engines for databases will provide information from places on the Internet most typical search engines cannot.
DeepDyve. Academic Search Engines and Databases The world of academia has many databases not accessible by Google and Yahoo! Google Scholar. Scientific Search Engines and Databases Science.gov. What is the Deep Web?A first trip into the abyss. Lisa M. Brownlee on Twitter: "Deep Web and Dark Web – Why Lawyers (Not Only Criminal Lawyers) Need to Be Informed #DeepWeb. Legal Solutions Blog The Deep Web and the Dark Web – Why Lawyers Need to Be Informed. Public interest in the “Deep Web” and the “Dark Web” has increased exponentially, from 8 to 100 and 25 to 100, respectively, on Google Trends from 2011 to now.
Silk Road and Bitcoin-related arrests brought global attention to the Dark Web, the Web space in which these events primarily occurred, and also to the broader sphere of the Deep Web of which the Dark Web is only a small part. The Deep Web includes but is not synonymous with Dark Web. The relationships between and among the various “levels” of the Web are illustrated below: Lawyers need to know precisely what aspect of the Web is involved in a particular case to understand how best to access the target information as well as to know what types of relief might be available if a civil or criminal wrong has occurred. The generally-accepted use of the the term “Deep Web” refers to “the vast portion of the Web that is beyond the reach of the typical ‘surface Web’ crawlers because it is not indexed by standard search engines.”
Legal Solutions Blog The Deep Web and the Dark Web – Why Lawyers Need to Be Informed. Public interest in the “Deep Web” and the “Dark Web” has increased exponentially, from 8 to 100 and 25 to 100, respectively, on Google Trends from 2011 to now. Silk Road and Bitcoin-related arrests brought global attention to the Dark Web, the Web space in which these events primarily occurred, and also to the broader sphere of the Deep Web of which the Dark Web is only a small part.
The Deep Web includes but is not synonymous with Dark Web. The relationships between and among the various “levels” of the Web are illustrated below: Lawyers need to know precisely what aspect of the Web is involved in a particular case to understand how best to access the target information as well as to know what types of relief might be available if a civil or criminal wrong has occurred. The generally-accepted use of the the term “Deep Web” refers to “the vast portion of the Web that is beyond the reach of the typical ‘surface Web’ crawlers because it is not indexed by standard search engines.” Cybercrime in the DeepWeb. Earlier, we published a blog post talking about the recent shut down of the Silk Road marketplace. There, we promised to release a new white paper looking at cybercrime activity on the Deep Web in more detail. This paper can now be found on our site here.
While the Deep Web has often been uniquely associated with The Onion Router (TOR), in this paper we introduce several other networks that guarantee anonymous and untraceable access — the most renowned darknets (i.e., TOR, I2P, and Freenet) and alternative top-level domains (TLDs), also called “rogue TLDs.” We analyzed how malicious actors use these networks to exchange goods and examined the marketplaces available in the Deep Web, along with the goods offered. Due to the large variety of goods available in these marketplaces, we focused on those that sparked the most interest from cybercriminals and compared their prices with the same kinds of merchandise found in traditional Internet underground forums, mostly Russian. Lisa M. Brownlee sur Twitter : "Deep Web and Dark Web – Why Lawyers (Not Only Criminal Lawyers) Need to Be Informed #DeepWeb. Virtualization and Cloud.
Designing Your Cloud Infrastructure.pdf. 5/23/2015 Designing Your Cloud Infrastructure 2/38 commensurate with demand. Measured service. Cloud systems automatically control and optimize resource use by taking advantage of a metering capability at some level of abstraction appropriate to the type of service ﴾for example, storage, processing, bandwidth, and active user accounts﴿. It should be noted that in the case of public clouds, broad network access to the cloud is crucial. Through standard mechanisms that promote use by heterogeneous thin or thick client platforms ﴾for example, mobile phones, tablets, laptops, and workstations﴿. Service Models: Software as a service ﴾SaaS﴿. Infrastructure. Platform as a service ﴾PaaS﴿. Applications created using programming languages, libraries, services, and tools supported by the provider.
Infrastructure as a service ﴾IaaS﴿. Applications. Deployment Models: Private cloud. Business units﴿. Community cloud. Public cloud. Hybrid cloud. 6 key questions to ask when designing cloud architecture | ZDNet. High Performance Cloud Computing Networks - [Infographic] | ProfitBricks Blog. Explosive Internet growth, beginning in the mid-late 1990’s, has had a dramatic affect on the evolution of computer networking. Some new network technologies and initiatives boomed, but faded rapidly into oblivion.
Others, notably Ethernet, invented by Bob Metcalfe at Xerox PARC, became the standard and a commodity. While new technologies emerged in the 2000’s to solve many of the performance and latency problems associated with Ethernet, notably Mellanox’s InfiniBand which is rapidly becoming the preferred networking interconnect technology in the Cloud Computing space. InfiniBand offers speeds of 80Gbps between cloud servers and between cloud servers and cloud storage. This Infographic presents a timeline illustrating the respective history and advantages of these two technologies, as well as some specific use cases and performance testing results.
A full size version of this Infographic – High Performance Cloud Computing Networks – is available here William Toll. Designing Your Cloud Infrastructure. Many network architectures include a tiered design with three or more tiers such as core, distribution, and access. Designs are driven by the port bandwidth and quantity required at the edge, in addition to the ability of the distribution and core tiers to provide higher speed uplinks to aggregate traffic.
Additional considerations include Ethernet broadcast boundaries and limitations, spanning tree or other loop-avoidance technologies. A dedicated management network is a frequent feature of advanced data center virtualization solutions. Most virtualization vendors recommend that hosts be managed via a dedicated network so that there is no competition with tenant traffic and to provide a degree of separation for security and ease of management purposes. With advanced data center virtualization, a frequent use case is to provide isolated networks where different owners such as particular departments or applications are provided their own dedicated networks. The Internet map. IBM's open cloud architecture. Introduction Cloud computing is changing the way we think about technology, and it’s no passing fad.
Consumers are using the cloud to store music. Startups are turning to cloud to get up and running without huge investments. Big businesses and governments are relying on clouds to make more data more accessible. Cloud computing is changing how business and society run, and it's opening up huge avenues of innovation. We are looking at how developers are now combining systems of record with systems of engagement, and we see a new style of cloud-based application emerging. These are systems of interaction . For these applications to be sustainable, cloud computing needs to be built on open source and standards.
We've learned through our experience that open source and standards allow developers to share information more quickly and easily, and at lower costs. Back to top IBM's open cloud architecture Moving up the stack We haven’t been exclusively focused on OpenStack, however. Figure 1. Social. Get_pdf.cfm. DoD Cloud Computing Strategy Final with Memo July 5 2012. Chapter 3 - Design Guidelines for Application Performance. Improving .NET Application Performance and Scalability J.D. Meier, Srinath Vasireddy, Ashish Babbar, Rico Mariani, and Alex Mackman Microsoft Corporation May 2004 Related Links Home Page for Improving .NET Application Performance and Scalability Chapter 4 — Architecture and Design Review of a .NET Application for Performance and Scalability Checklist: Architecture and Design Review for Performance and Scalability Send feedback to Scale@microsoft.com patterns & practices Library Summary: This chapter presents a set of performance guidelines and principles for application architects and designers.
Contents ObjectivesOverviewHow to Use This ChapterPrinciplesDeployment ConsiderationsScale Up vs. Objectives Learn design tradeoffs for performance and scalability. Overview Performance and scalability are two quality-of-service (QoS) considerations. During your design phase, identify performance objectives. How to Use This Chapter Jump to topics or read from beginning to end. Principles Design Principles. Cloud Architecture: Get It Right The First Time.
Cloud expert David Linthicum, speaker at Interop 2013 New York, shares advice on why an IT manager should play cloud architecture detective. Whether you're building an enterprise private cloud or buying a public cloud service, the underlying architecture of what you end up with will have an impact on what you can do. "People have a tendency not to think about architecture," noted David Linthicum, senior VP at Cloud Technology Partners in Cambridge, Mass. and a speaker in the Cloud and Virtualization track at Interop New York 2013. And cloud vendors, including Amazon Web Services and Google Compute Engine, tend not to disclose much about their underlying architectures. Clouds may have some elements in common, but the specific goals behind the selection of their parts and their method of assembly actually differ greatly. "The architectural differences can show up in a big way," Linthicum warned. . [ Want to learn more about Linthicum's views on getting into the cloud?
Architecture matters. Cloud Design Patterns: Prescriptive Architecture Guidance for Cloud Applications. January 2014 Containing twenty-four design patterns and ten related guidance topics, this guide articulates the benefit of applying patterns by showing how each piece can fit into the big picture of cloud application architectures. It also discusses the benefits and considerations for each pattern.
Most of the patterns have code samples or snippets that show how to implement the patterns using the features of Microsoft Azure. However the majority of topics described in this guide are equally relevant to all kinds of distributed systems, whether hosted on Azure or on other cloud platforms. The following design patterns are useful in cloud-hosted applications. Each pattern is provided in a common format that describes the context and problem, the solution, issues and considerations for applying the pattern, and an example based on Azure.
Associated with the individual pattern to download only that sample. Cache-aside Pattern Load data on demand into a cache from a data store. Retry Pattern.