PPT-EE324 Distributed Systems

L 17 P2P Scaling Problem 2 Millions of clients server and network meltdown P2P System 3 Leverage the resources of client machines peers Computation storage bandwidth Why p2p. Access to resources of various machines is done explicitly by Remote logging into the appropriate remote machine Transferring data from remote machines to local machines via the File Transfer Protocol FTP mechanism Tightly Coupled Distributed System g littlebig endian Concurrency an issue that was already present in an OS Means that we can scale the capacity of the system by adding more resources Examples of distributed systems Web Email DNS Peertopeer systems le sharing CDNs cycle sharing brPag Overview of . Distributed Systems. Andrew. . Tanenbaum. and Marten van Steen, . Distributed Systems – Principles and Paradigms. , Prentice Hall, c2002.. Outline. Overview. Goals. Software. Client Server. Spring 2009. L-1 Introduction. 1. Today's Lecture. Administrivia. Example topics. 2. 3. Instructors. Instructor. Srini. Seshan. srini@cmu.edu. , Wean Hall . 8113. Office hours: Thursday 1-2pm. Teaching . Spring 2015. Ki-. Joune. Li . http://isel.cs.pusan.ac.kr/~lik. Pusan National University. An . assignment. Choose an electronic (or electric) device . Define additional functions with. . data storage. Sig Freund. CSC 8320 Fall . 2008. rfreund1@student.gsu.edu. Transparency in Distributed Operating Systems. Evolution of Modern Operating Systems. Centralized operating system. +network access and resource sharing. systems. L-. 20. More DFS. Andrew File System. Let’s start with a familiar example: andrew. 10,000s. of . machines. 10,000s. of . people. Goal: . Have a consistent namespace for files across computers. Last Lecture. Why Distributed File Systems?. Basic mechanisms for building DFSs. Using NFS and AFS as examples. Today. Design choices . in DFS and . their implications. Naming. Authentication and Access Control. . Hoang Huu Hanh, Hue University. hanh-at-hueuni.edu.vn. Architectural Design - . Establishing the overall structure of a software system. Topics covered:. System structuring. Control models. Modular decomposition. Vector Clocks. Vector clocks overcome the shortcoming of . Lamport. logical clocks. L. (e) < . L. (. e. ’) does not imply . e. happened before . e. ’. Goal. Want ordering that matches causality. Sig Freund. CSC 8320 Fall . 2008. rfreund1@student.gsu.edu. Transparency in Distributed Operating Systems. Evolution of Modern Operating Systems. Centralized operating system. network access and resource sharing. Topics covered. Distributed systems characteristics and issues. Models of component interaction . Client–server computing. Architectural patterns for distributed systems. Software as a service. Distributed systems. October 11, 2018. A.F. Cooper. Context and Motivation. How can we synchronize an asynchronous distributed system?. How do we make global state consistent? . Snapshots / checkpoints. Example: Buying a ticket on Ticketmaster. Prof. Nalini . Venkatasubramanian. . &. Prof. Yusuf . Sarwar. Dept. of Information & Computer Science. University of California, Irvine. Intro to Distributed Systems Middleware. 2. CS 237/. NetSys.