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The Human Side of Microservices
John Billings
@jnb42
billings@yelp.com
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/
microservices-apologetics
Presented at QCon New York
www.qconnewyork.com
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
Introduction
About me
• PhD in compiling and verifying routing
protocols
• Joined Yelp in February 2011
• Initially:
• Joined <10 person search team
• 70 - 80 engineers
• Now 300+ engineers
Yelp’s Mission
Connecting people with great
local businesses.
Yelp Stats
As of Q1 2016
90M 3270%102M
3 million
1 million
LoC in monolith
2005 20162011
Number of microservices
117
2012 2016
LoC in microservices
891k
2012 2016
Microservice adoption
https://www.flickr.com/photos/24736216@N07/4433492189
http://www.soc.iastate.edu/extension/pub/comm/SP18.pdf
“The Diffusion Process”
George M. Beal and Joe M. Bohlen, 1957
Technology adoption curve
for a population
The chasm
Early adopters Early majority
Innovators
Innovators
The Geocoder Service
Early adopters
The majority
Education
https://en.wikipedia.org/wiki/Fallacies_of_distributed_computing
https://github.com/Yelp/service-
principles
● Service type (PaaSTA vs legacy SOA)
● Technology type (Python / Java / daemon)
● Caching
● Downtime scenarios
● Databases
● External services
● Hardware requirements
● Load balancing
● Performance and uptime
● Monitoring
● Security
Summits and unconferences
Talks
Deputy programs
Office hours
Postmortems
Standards
Boo! Boring!
Tell me
something
interesting!
Zzzz………….!
Interfaces
Perform a real query
Tracing
Metrics
Datastores
Timeouts and retries
https://en.wikipedia.org/wiki/Abort,_Retry,_Fail%3F#/media/File:Abort_Retry_Fail.PNG
Ownership
Organizational
objectives
Lots of (potentially) conflicting objectives:
• Performance
• Reliability
• Cost
• Security
• Iteration speed
“What gets measured gets improved”
Peter Drucker
Conclusions
Microservices have forced us to build a more
robust, decentralized organization
This change has taken a long time
I believe (but cannot prove) that we are shipping
code as quickly as ever
Any questions?
Watch the video with slide
synchronization on InfoQ.com!
https://www.infoq.com/presentations/
microservices-apologetics

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The Human Side of Microservices