soa & apis: fearless lessons from the field
TRANSCRIPT
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SOA and APIs:
Fearless Lessons from the Field Mike Amundsen
Principal API Architect
@mamund
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Fearless
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Fearless
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Fearless
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Mike Amundsen
Architect, Developer, Presenter
Hypermedia Junkie
Principal API Architect for Layer 7
“Help people build great APIs for the Web”
Personal Mission
“Improve the quality and usability of information on the Web.”
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THE CHALLENGE
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More Devices
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More Apps
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More APIs
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The Challenge
Mobility
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The Challenge
Agility
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The Challenge
Mobility = Agility
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The Challenge
Increase Agility
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The Challenge
Maintain Stability
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Lessons from the field
Models and tools
REST and Hypermedia
Broad Experience
SOAP, CRUD, and Hypermedia
High-level View
The USE Paradigm
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REST AND HYPERMEDIA
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REST and Hypermedia
REST is an architectural model for
widely distributed systems
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REST and Hypermedia - Space
http://www.flickr.com/photos/jram23/3088003105/
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REST and Hypermedia - Time
http://www.flickr.com/photos/alancleaver/2661425133/
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REST and Hypermedia - Model
http://www.flickr.com/photos/usnationalarchives/5476286211/
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REST and Hypermedia - Tools
http://http://www.flickr.com/photos/36247316@N00/3108399560/
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REST and Hypermedia
Hypermedia is a tool for
implementing remote, evolvable
systems
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REST and Hypermedia - Space
http://www.flickr.com/photos/jram23/3088003105/
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REST and Hypermedia - Time
http://www.flickr.com/photos/alancleaver/2661425133/
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REST and Hypermedia – Evolvable
http://www.flickr.com/photos/isherwoodchris/5811756295/
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REST and Hypermedia – Evolvable
http://http://www.flickr.com/photos/ecbiosheron/4139220163/
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REST and Hypermedia – Evolvable
http://http://http://www.flickr.com/photos/nrg07/4735858552/
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REST and Hypermedia – Real World
http://www.flickr.com/photos/smaku/233763545/
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SOAP, CRUD, AND HYPERMEDIA
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SOAP is for Components
http://www.flickr.com/photos/amberwalker/5755325926/
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SOAP is for Components
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SOAP is for Components
Strong on XML, Weak on HTTP
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CRUD is for Objects
http://www.flickr.com/photos/topekalibrary/4294393624/
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CRUD is for Objects
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CRUD is for Objects
Strong on HTTP, Weak on Workflow
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Hypermedia is for Messages
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Hypermedia is for Messages
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Hypermedia is for Messages
Strong on HTTP, Strong on Workflow
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SOAP, CRUD, Hypermedia
Moving away from SOAP
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SOAP, CRUD, Hypermedia
Implementing CRUD
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SOAP, CRUD, Hypermedia
Heading toward Hypermedia
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THE USE PARADIGM
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Usable
Usability is the ease of use and learnability of
a human-made object.
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Usable – Action Life Cycle
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Usable – Focus on tasks
http://www.flickr.com/photos/somoamsterdam/4833837888/
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Usable – Employ empirical measurement
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Usable – Iterative design
http://www.flickr.com/photos/aajbutler/5448088057/
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Usable
Focus
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Usable
Measure
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Usable
Iterate
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Scalable
Scalability is the ability of a system, network,
or process, to handle a growing amount of
work in a capable manner.
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Scalable – Out vs. Up
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Scalable
http://www.flickr.com/photos/27976837@N00/4347462236/
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Scalable – DevOps
http://www.flickr.com/photos/friendlydragon/3864150771/
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Scalable – Where it counts
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Scalable
Scale Out
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Scalable
Automate
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Scalable
Where it counts
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Evolvable
Evolvability is defined as the capacity of a
system for adaptive change.
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Evolvable
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Evolvable (pandere – to stretch)
http://www.flickr.com/photos/kenjonbro/6277623578/
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Evolvable (vertere – to turn)
http://www.flickr.com/photos/erdero/2274374743/
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Evolvable
Versions “break”, extensions don’t.
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SUMMARY
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Summary - Challenge
Mobility
Agility
Stability
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Summary – Models
http://www.flickr.com/photos/usnationalarchives/5476286211/
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Summary – Tools
http://http://www.flickr.com/photos/36247316@N00/3108399560/
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Summary – Components
http://http://www.flickr.com/photos/36247316@N00/3108399560/
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Summary – Objects
http://www.flickr.com/photos/topekalibrary/4294393624/
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Summary – Messages
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Summary – Usable
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Summary – Scalable
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Summary – Evolvable
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SOA and APIs:
Fearless Lessons from the Field Mike Amundsen
Principal API Architect
@mamund