Microservice Lifecycle Demo Presentation

The Microservices Lifecycle
A Demonstration
Jay Thorne, Consulting Software Engineer, APIM
Matt McLarty, VP, API Academy
DO3X14SV
DEVOPS

2 © 2016 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD
For Informational Purposes Only
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Abstract
In this demo, we’ll illustrate how to create a microservices-based system that employs essential
capabilities to deliver speed and safety at scale.Jay Thorne
CA Technologies
Consulting Software
Engineer, APIM

Agenda
SOFTWARE COMPLEXITY
ESSENTIAL VS. ACCIDENTAL COMPLEXITY
COMPLEXITY IN MICROSERVICES
THE MICROSERVICES LIFECYCLE: A DEMO
1
2
3
4

Software Complexity

Software Complexity
“Many of the classical problems of
developing software products derived
from this essential complexity and its
nonlinear increased with size.”
- Fred Brooks, “No Silver Bullet—Essence and
Accident in Software Engineering”
http://www.cs.nott.ac.uk/~pszcah/G51ISS/Documents/NoSilverBullet.html

Essential vs. Accidental Complexity
Essential Complexity
• The complexity of the software’s functional scope and the
problems it solves (e.g. correlating and analyzing large amounts
of data in real time)
Accidental Complexity
• The complexity of the software’s implementation details (e.g.
the languages, processes and messages used to do the work)

Complexity in Microservices
Essential Complexity in Microservices
• Focus on who will be consuming the microservices, what tasks they want
to accomplish, how service boundaries are drawn, and the semantics of
the APIs that allow communication between microservices
Accidental Complexity in Microservices
• Focus on establishing component independence and then using
automation to speed up the development lifecycle and achieve
maximum stability in operational environments

Dealing with Essential Complexity in Microservices
 Eric Evans’ Domain-Driven Design provides a
framework for defining and modeling the
essential capabilities of complex software
systems
Image credit: http://martinfowler.com/bliki/BoundedContext.html

Dealing with Accidental Complexity in Microservices
From Ronnie Mitra’s
Presentation, “Designing a
Microservices Architecture”, at
CA World 2015
http://www.apiacademy.co/reso
urces/designing-a-microservices-
architecture/

Our Demo Scenario: “App Economy World”
 “App Economy World” is the preeminent global technology
conference
 In order to practice what they preach, the AEW tech team is
building a microservices backbone to power the website and
mobile app
 These services will be used in preparation for the event—to
book speakers and exhibitors—and also during the event—to
help attendees build their own personal agendas

Essential Complexity in “App Economy World” Services
Service Consumers
• Speakers
• Exhibitors
• Event Managers
• Event Attendees
Service Tasks
• Propose sessions
• Approve sessions
• Schedule sessions
• Propose exhibits
• Approve exhibits
• Locate exhibits
• Build personal agenda
Services
• Speaking Session
Service
• Exhibit Service
• Event Management
Service
• Attendee Service
• Accounting Service
(external)
• Facility Services
(external)

Demo Scenario Context Map
Speaking
Session
Service
Exhibit
Service
Event
Management
Service
Accounting
Service
Attendee
Service
Facilities
Service
Query and Book Rooms/Times
Query and Book Booths
Post Purchases
Speakers
Attendees
Exhibitors
Event Managers
Query Exhibits
Query Sessions
Query and
Build Agenda
Request Session,
Receive
Approve/Decline
Request Exhibit, Receive
Approve/Decline,
Purchase Exhibit
Approve
Sessions and
Exhibits
Request
Approval

Microservices Lifecycle Considerations
Design Time Runtime
System
Service
 Service discoverability
 Service boundary evolution
 System-wide policy definition
 Service instance discoverability
 Service composition for task
execution
 System-wide policy enforcement
 Component discoverability
 Interface evolution
 Rapid service prototyping
 Self-awareness
 Parallelism
 Rapid provisionability

Microservices Lifecycle Select Capabilities
Capability Enabling Technology
Service Discoverability CA API Portal
System-wide Policy Definition and
Enforcement
CA API Gateway
Rapid Service Prototyping and
Provisioning
CA Live API Creator

Demo Focus: Removing Accidental Complexity
Internet of Things
Mobile
SaaS/Cloud Solutions
AWS, Google, SFDC …
Partner Ecosystems
Developers
ID/Authentication
SQL Data
NoSQL Data
Live API Creator
API Gateway
Mobile API Gateway
Mobile App Services
API Developer Portal
Enterprise NetworkExisting APIs
Scripts

 11 docker images
 All Ephemeral – no saved databases, etc.
 All provisioned live via scripting – no pre-done db’s or artifacts
 Source data was checked out this week from our Github
 It takes 15 minutes because it’s literally all from scratch
Some Details on what’s happening

The Demo

Questions?

Stay connected at communities.ca.com
Thank you.

@CAWORLD #CAWORLD © 2016 CA. All RIGHTS RESERVED.22 @CAWORLD #CAWORLD
DevOps – API Management and
Application Development
For more information on DevOps – API Management and
Application Development, please visit: http://cainc.to/DL8ozQ

Microservice Lifecycle Demo Presentation

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