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Cloud Computing 1.3.pptx
- 1. Peer to PeerNetwork Dr.J.Kalavathi Assistant Professor of Information Technology V.V.Vanniaperumal College for Women
- 2. INTRODUCTION: ✔ The P2Parchitecture offers a distributed model of networked systems. ✔ P2P network is client-oriented instead of server-oriented
- 3. P2P SYSTEMS ✔ Ina P2P system, every node acts as both a client and a server, providing part of the system resources. ✔ Peer machines are simply client computers connected to the Internet. ✔ All client machines act autonomously to join or leave the system freely. ✔ No central coordination or central database is needed. ✔ The system is self-organizing with distributed control.
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- 5. P2P SYSTEMS ✔ Initially,the peers are totally unrelated. ✔ Each peer machine joins or leaves the P2P network voluntarily. ✔ Only the participating peers form the physical network at any time. ✔ Unlike the cluster or grid, a P2P network does not use a dedicated interconnection network. ✔ The physical network varies in size and topology dynamically due to the free membership in the P2P network.
- 6. ✔ Data itemsor files are distributed in the participating peers. ✔ Based on communication or file-sharing needs, the peer IDs form an overlay network at the logical level. ✔ This overlay is a virtual network formed by mapping each physical machine with its ID, logically, through a virtual mapping. ✔ When a new peer joins the system, its peer ID is added as a node in the overlay network. OVERLAY NETWORKS
- 7. OVERLAY NETWORKS ✔When an existingpeer leaves the system, its peer ID is removed from the overlay network automatically. ✔Therefore, it is the P2P overlay network that characterizes the logical connectivity among the peers. ✔There are two types of overlay networks ❖ Structured ❖ Unstructured
- 8. ✔ An unstructuredoverlay network is characterized by a random graph. ✔ There is no fixed route to send messages or files among the nodes. ✔ Structured overlay networks follow certain connectivity topology and rules for inserting and removing nodes (peer IDs) from the overlay graph. OVERLAY NETWORKS
- 9. P2P APPLICATION FAMILIES ✔ Basedon application, P2P networks are classified into four groups. ✔ Details have mentioned in the table below.
- 10. P2P APPLICATION FAMILIES ✔ CollaborationP2P networks include MSN or Skype chatting, instant messaging, and collaborative design, among others. ✔ The third family is for distributed P2P computing in specific applications. ✔ For example, provides 25 Tflops of distributed computing power, collectively, over 3 million Internet host machines. Other P2P platforms, such as JXTA, .NET, and
- 11. Cloud Computing over the Internet ✔working with large data sets will typically mean sending the computations (programs) to the data, rather than copying the data to the workstations. ✔ This reflects the trend in IT of moving computing and data from desktops to large data centers, where there is on-demand provision of software, hardware, and data as a service.
- 12. ✔ A cloudis a pool of virtualized computer resources. ✔ A cloud can host a variety of different workloads, including batch-style backend jobs and interactive and user-facing applications. ✔ a cloud allows workloads to be deployed and scaled out quickly through rapid provisioning of virtual or physical machines. Cloud Computing over the Internet
- 13. Internet Clouds ✔a virtualized platform with elastic resources on demand by provisioning hardware, software, and data sets dynamically. ✔ The idea is to move desktop computing to a service-oriented platform using server clusters and huge databases at data centers. ✔ The cloud ecosystem must be designed to be secure, trustworthy, and dependable. Some computer users think of the cloud as a centralized resource pool.
- 15. The Cloud Landscape ✔Cloudcomputing as an on-demand computing paradigm resolves or relieves. ✔the cloud landscape and major cloud players, based on three cloud service models.
- 16. Infrastructure as aService (IaaS) ✔ delivering everything from operating systems to servers and storage through IP-based connectivity as part of an on-demand service. Platform-as-a-service (PaaS) ✔ the primary difference being that instead of delivering software online, it is actually a platform for creating software that is delivered via the Internet. Software-as-a-service (SaaS) ✔ Licenses are typically provided through a pay-as-you-go model or on-demand. Types of Cloud Computing
- 17. Internet applications and webservices: 1.Desired location in areas with protected space and higher energy efficiency 2. Sharing of peak-load capacity among a large pool of users, improving overall utilization 3. Separation of infrastructure maintenance duties from domain-specific application development 4. Significant reduction in cloud computing cost, compared with traditional computing paradigms 5. Cloud computing programming and application development 6. Service and data discovery and content/service distribution 7. Privacy, security, copyright, and reliability issues 8. Service agreements, business models, and pricing policies
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