07-04-2011, 04:11 PM
Lec01.ppt (Size: 2.25 MB / Downloads: 180)
Advanced data management
Course purpose
Course contents
Lecturer Academic experience
2006.9 ~2008.6 University of California, Irvine, Postdoc researcher
2002.8 ~2006.8 National University of Singapore, PhD candidate
1998.9 ~ 2001.1 Shanghai Jiao Tong University Master candidate
Research in Postdoc
Course grading
Any question and any comments ?
Cloud computing
Why we use cloud computing?
Why we use cloud computing?
Case 1:
Write a file
Save
Computer down, file is lost
Files are always stored in cloud, never lost
Why we use cloud computing?
Case 2:
Use IE --- download, install, use
Use QQ --- download, install, use
Use C++ --- download, install, use
……
Get the serve from the cloud
What is cloud and cloud computing?
Cloud
Demand resources or services over Internet
scale and reliability of a data center.
Cloud computing is a style of computing in which dynamically scalable and often virtualized resources are provided as a serve over the Internet.
Users need not have knowledge of, expertise in, or control over the technology infrastructure in the "cloud" that supports them.
The architecture of cloud computing system
Characteristics of cloud computing
Virtual.
software, databases, Web servers, operating systems, storage and networking as virtual servers.
On demand.
add and subtract processors, memory, network bandwidth, storage.
Software delivery model
No hardware or software to manage
Service delivered through a browser
Customers use the service on demand
Instant Scalability
Examples
Your current CRM package is not managing the load or you simply don’t want to host it in-house. Use a SaaS provider such as Salesforce.com
Your email is hosted on an exchange server in your office and it is very slow. Outsource this using Hosted Exchange.
Platform delivery model
Platforms are built upon Infrastructure, which is expensive
Estimating demand is not a science!
Platform management is not fun!
Examples
You need to host a large file (5Mb) on your website and make it available for 35,000 users for only two months duration. Use Cloud Front from Amazon.
You want to start storage services on your network for a large number of files and you do not have the storage capacity…use Amazon S3.
Computer infrastructure delivery model
A platform virtualization environment
Computing resources, such as storing and processing capacity.
Virtualization taken a step further
Examples
You want to run a batch job but you don’t have the infrastructure necessary to run it in a timely manner. Use Amazon EC2
You want to host a website, but only for a few days. Use Flexiscale.
Cloud computing and other computing techniques
An Industry Transformed
Shrek, Delgo, and Others
Grid Computing & Cloud Computing
share a lot commonality intention, architecture and technology
Difference
programming model, business model, compute model, applications, and Virtualization.
Grid Computing & Cloud Computing
the problems are mostly the same
manage large facilities;
define methods by which consumers discover, request and use resources provided by the central facilities;
implement the often highly parallel computations that execute on those resources.
Grid Computing & Cloud Computing
Virtualization
Grid
do not rely on virtualization as much as Clouds do, each individual organization maintain full control of their resources
Cloud
an indispensable ingredient for almost every Cloud
Any question and any comments ?
Google App Engine
Google App Engine
Does one thing well: running web apps
Simple app configuration
Scalable
Secure
App Engine Does One Thing Well
App Engine handles HTTP(S) requests, nothing else
Think RPC: request in, processing, response out
Works well for the web and AJAX; also for other services
App configuration is dead simple
No performance tuning needed
App Engine Architecture
How to use Google App engine
Download Java 6
Download Eclipse and Google plug in
Register a user account in Google
Create an application (python, Java) and upload the code
In class quiz
Please answer all questions
You may be requested to answer a question later. Your performance will affect your final score.