isdap: the indirect streaming data access platform
Post on 21-Dec-2015
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TRANSCRIPT
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ISDAP: The Indirect Streaming Data Access Platform
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Outline
Motivation Architecture
Centralized P2P
Object Diagram
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Motivation
Streaming data are abundant in our surroundings: Length of queue at cafeteria Location of and number of passengers on
campus bus Course video/audio for e-learning Live streaming of concerts or games
Great demands to access these streaming data at any time, any place
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A Centralized Architecture
Two kinds of entities: Streaming source Streaming sink
Matching through centralized servers, e.g. google Bottleneck, controlled access
Delivering directly from source to sink Source resource limitation and bottleneck
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Scenario – Campus Life
P2P Overlay Network
C
(Control)Data Stream
(Video)Data Stream
(Video)Data Stream(Control)Data
Stream
(Video)Data Stream(Video)Data
Stream
(Video)Data Stream
Dedicated Media File Server
C
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Centralized Version Server to A
Response_HTTPResponse_JPG_nResponse_JPG_n+1…
Server to BResponse_HTTPResponse_JPG_nResponse_JPG_n+1…Server
n
n+1
HTTP
Client A
n
Client B
n
n n
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P2P Version
Client A
n
n+1
HTTP
Client B
n
Client C
n-1n-1
n
n-1
A to B (from the ath frame)Response_HTTPResponse_JPG_aResponse_JPG_a+1…
B to C (from the bth frame, b < a)Response_HTTPResponse_JPG_bResponse_JPG_b+1…
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Object Diagram
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Centralized, provider
register
Directory server
Volunteer provider
IPCam Media control server
New provider
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Centralized, client
query
url
url
data
Directory server
Volunteer provider
IPCam Media control server
Client
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P2P, provider
publish
Volunteer provider
IPCam Media control server
New provider
P2P indexing network
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P2P, client
lookup
url
url
data
Volunteer provider
IPCam Media control server
Client
P2P indexing network
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Object Diagram of a Peer
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Centralized, provider
DirectoryServer
publish
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Centralized, client
DirectoryServer
lookup
url
url
MediaServer
HTML, player, media data
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publish
P2P, provider
P2P indexing network
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P2P, client
lookup
url
url
SupplierHTML, player, media data
P2P indexing network
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Review the Architecture