lizhenhua1983@gmail.com

2

Dropbox

QQ

EC2, S3, SQS, RDS

GFS, BigTable, MapReduce

,

Azure,

Office365

CloudServers,

OpenStack

iCloud,

iTunes

20063Amazon EC2 Elastic Compute Cloud

20068Google 101

()

IaaS

PaaS

SaaS

1946ENIAC

1961MITCTSS (Compatible Time-Sharing System)

1973Ken ThompsonDennis RitchieUNIX

PC

15Modem56 Kbps

10ADSL200 Kbps

5ADSL+1-4 Mbps

600010-100 Mbps

Internet

9

2004AmazonIT

1

2

3

Amazon EC2

EC2

EC2S3SimpleDBRDSSQSCloudFront

EC2

//

*

*

Vmware + vSphere

CitrixXenDesktop

Dropbox

Google

Dropbox

Dropbox1/10

Drew Houston

1983

14

MITU

Dropbox

Dropbox

Dropbox

+

Amazon S3

95%5%

Dropbox

Dropbox

QQ

QQ

P2PBT

Cloud

High data rate !

66373 Gbps 2011

QQ

PC

PC

-

- GPRS/3G/4G

-

-

- CPU

28

IT

1

Above the Clouds: A Berkeley View of Cloud Computing

- Berkeley TechReport09

MapReduce: Simplified Data Processing on Large Clusters

- OSDI04

A Scalable, Commodity Data Center Network Architecture

- SIGCOMM08

2

Xen and the Art of Virtualization

- SOSP03

Dynamo: Amazons Highly Available Key-value Store

- SOSP07

Cloud Computing and Emerging IT Platforms: Vision, Hype, and Reality for Delivering Computing as the 5th Utility

-Computer Communications09

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1

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Internet

BT

client

eMule

client

User

User

2

.

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