How Netflix Works? · NETFLIX SPACE/Power Core Router-2 OCA-1 OCA-2 NETFLIX Core Router-2 IX SW1 IX...
Transcript of How Netflix Works? · NETFLIX SPACE/Power Core Router-2 OCA-1 OCA-2 NETFLIX Core Router-2 IX SW1 IX...
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How Netflix Works?
ThaiNOG
8th May 2019
NETFLIX CONFIDENTIAL
NOT FOR DISTRIBUTION
Jocelyn Ooi
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• > 148 million members
• > 190 countries
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How
Works
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Inventing Internet TV:
• The architecture of internet streaming
• Quality of Experience
• Cost
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DATA PLANE Open Connect
Content
Delivery
Network
CONTROL PLANE
STREAM NETFLIX DEVICE
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before streaming starts = control plane =
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streaming = data plane = Open Connect
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Data Plane (streaming playback)
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Open Connect
A NETFLIX ORIGINAL
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Q: What is a Content Delivery Network?
A: Geographically distributed content servers attached to networks
+ a way of routing requests to the closest (and/or best performing)
server / network path
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History
Streaming Launched (“EHub”)
2007
Third Party CDN 2009
Open Connect 2011
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Hardware Open Connect Appliances
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Designed for bulk storage of the entire large regional content catalogs
“Storage” appliance
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High-throughput servers, used to serve very popular content
“Flash” or “Offload” appliance
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Open Connect connects directly to residential ISP networks. 95% of our traffic is directly connected.
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We provide free Open Connect Appliances for Internet Service Provider (ISP) data centers
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We also provide interconnection to ISPs at Internet Exchange locations throughout the world
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wait, what’s an IXP?
An Internet exchange point
(IX or IXP) is
a physical infrastructure
through which
Internet Service
Providers (ISPs)
and
Content Delivery
Networks (CDNs)
exchange Internet traffic
between their networks
-wikipedia
Singapore
Equinix
SG
3
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Netflix Site
© 2015 Netflix Inc
Single CORE Sample Configuration o 1 Site, 2 OCAs in a redundant configuration
o OCAs can be clustered for cache fill o Connections to 2 Core Routers
NETFLIX
Core
Router-1
Bangkok
Core
Site
Core
Router-1
PARTNER
PROVIDED
SPACE/Power
Core
Router-2
OCA-1 OCA-2
NETFLIX
Core
Router-
2
IX
SW1
IX
SW2
NETFLIX
PROVIDED
EQUIPMENT
IX Connection IX Connection
NETFLIX CONFIDENTIAL
NOT FOR DISTRIBUTION
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Control Plane (streaming setup)
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Determine the preferred experience DEVICE TITLE
CONNECTIONS
LOCATION
NETWORK
Broadband - wired or
wifi
Cellular - Edge, 3G,
LTE, ...
LANGUAGE
HDCP support,
etc.
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That’s exactly what I want
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...now where can I get it?
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GENERATE PLAYBACK MANIFEST
PLAYBACK MANIFEST
PLAYBACK
This is how we steer the request to the correct server/network/location
LICENSE
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Content Filling
pre-
positioning
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Caches fill while you sleep
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Files are copied off-peak (in the middle of the night) when networks are not loaded, using pre-positioning algorithms
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CONTENT RANK
PREDICTABLE VIEWING PATTERNS
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Using the purpose-built Open Connect network, we can copy each new Netflix show into a region once, then show it thousands or millions of times.
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Networks are dimensioned for peak capacity
Off-peak cache fill is “free”
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peak
required
upstream
capacity
1 Tbps
peak required
Netflix
capacity
350 Gbps
ISP
IS
P cu
stom
er
hom
es
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peak
required
upstream
capacity
650 Gbps
peak required Netflix capacity 0
ISP
IS
P cu
stom
er
hom
es
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Insight into performance Quality of Experience
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input rate (from network)
output rate (to screen)
buffer level
video buffer (leaky bucket)
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The Tradeoff
quality interruption risk
playdelay
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https://openconnect.netflix.com
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Questions?
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Thank you!