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Cloud-based
Microservices Powering
BBC iPlayer
Stephen Godwin
Senior Technical Architect
InfoQ.com: News & Community Site
• 750,000 unique visitors/month
• Published in 4 languages (English, Chinese, Japanese and Brazilian
Portuguese)
• Post content from our QCon conferences
• News 15-20 / week
• Articles 3-4 / week
• Presentations (videos) 12-15 / week
• Interviews 2-3 / week
• Books 1 / month
Watch the video with slide
synchronization on InfoQ.com!
https://www.infoq.com/presentations
/bbc-microservices-aws
Purpose of QCon
- to empower software development by facilitating the spread of
knowledge and innovation
Strategy
- practitioner-driven conference designed for YOU: influencers of
change and innovation in your teams
- speakers and topics driving the evolution and innovation
- connecting and catalyzing the influencers and innovators
Highlights
- attended by more than 12,000 delegates since 2007
- held in 9 cities worldwide
Presented at QCon London
www.qconlondon.com
January 2013
Broadcast
Video
Origin
Start small
Clip Publishing
Application
S3
Clip Publishing
Application
Transcode Service
S3
Clip Publishing
Application
Transcode Service
S3
Clip Publishing
Application
FFmpeg
Transcode Service
S3
S3Clip Publishing
Application
Elemental PaaS
FFmpeg
Transcode Service
Media Distribution
Service
Origin
Content
Distribution
Networks
S3
S3Clip Publishing
Application
Elemental PaaS
FFmpeg
“Congratulations. It now
works the way it always
should have.”
April 2013
Broadcast
Video
Origin
Transcoding
Service
Media Distribution
Service
Meanwhile, in the
broadcast chain…
Broadcast
Video Feed x 24
Video Chunker
30Mb/s HD
10Mb/s SD
S3
AWS
Broadcast
Video Feed x 24
Video Chunker
30Mb/s HD
10Mb/s SD
Local
Storage
Broadcast Chain
80MB
chunks
!
~20s HD
~60s SD
SD Video
!
109 GB/day x 21 channels
= 2.3 TB/day
HD Video
!
365 GB/day x 8 channels
= 2.9 TB/day
2.3 TB/day
+ 2.9 TB/day
= 5.2 TB/day
5.2 TB/day
x 2 copies
x 2 locations
21 TB
per day
80MB chunks
80MB chunks
New file
80MB chunks
New file
July 2013
Broadcast
Video
Origin
Transcoding
Service
Media Distribution
Service
Time Addressable
Media Store
Broadcast
Video
Origin
Transcoding
Service
Media Distribution
Service
Playout
Event Feed
Time Addressable
Media Store
Under the hood
ServiceIn Q Out Q
SQS SQS
In Q Out Q
Service
EC2
In Q Out Q
Service
Service
Service
In Q Out Q
Service
DLQ
In Q Out Q
Request
Received
Found all
chunks
File
complete
Created
new file
Time Addressable
Media Store
August 2013
Going live
Avoiding the Big Bang
Off-Air Transcode Requests for 1 week
September 2013
15 minutes
202 deploys a week
34 to live
Developers should spend
60% of their time writing tests.
When it goes wrong
One tiny change…
2014 - Present Day
10 minutes
Present day
Transcode
Service
Media Distribution
Service
Transcode
Service
Media Distribution
Service
Aggregator Packager
What hasn’t worked?
Picture of a trawler
Moving at speed…
What did we learn?
Linear scaling
Reliable pipelines of
microservices
Think about how you
will debug your system
‘Just Config’
Coming Soon
Thank you.
Watch the video with slide synchronization on
InfoQ.com!
https://www.infoq.com/presentations/bbc-
microservices-aws

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Cloud-based Microservices powering BBC iPlayer