You’ve been hearing about Microservices for months, and probably have taken a look about 12-factor and cloud-native apps too. But there’s a myriad of different frameworks and tools that you can use to craft your software and join the pieces together into a Microservices Architecture. You want to use the best tool for the job, and you need a hassle-free DevOps pipeline to orchestrate and deploy all of them. Burr explains how you can combine a lot of different technologies and tools that will open your eyes for the huge possibilities that Microservices can enable you to achieve. Have it all: containers, Docker, Vert.x, Wildfly Swarm, Spring Boot, NodeJS, .NET, OpenShift, Jenkins, Kubernetes and perhaps much more.

1. 1
Develop & Deploy Cloud-native Apps as
Resilient Microservices Architectures
@burrsutter
burr@redhat.com
http://developers.redhat.com
http://bit.ly/helloworldmsa

2. Change History
0.9 - NYC Java Meetup
1.0 - Great India Developer Summit - fail slides, title change

3. @burrsutter developers.redhat.com

4. Microservices is about
Agility
Continuous Delivery, Deployment, Improvement

5. Peak of
Inflated Expectations
Microservices
x
Trough of
Disillusionment
Serious Hotness

6. Your Journey to Microservices :-)
Self-Service
On-Demand
Elastic
Infrastructure
(Cloud)
Re-Org to
DevOps
Automation
Puppet, Chef,
Ansible
CI & CD
Deployment
Pipeline
&
Containers
One
Microservice
Silicon
Valley
DotCom
Startup

7. Green vs Brown (shades Brown)
GREEN
BROWN

8. Operating System
Java Virtual Machine
Application Server
EAR - Enterprise Archive
.WAR .WAR.WAR.WAR
.JAR.JAR
.JAR
.JAR.JAR
.JAR
.JAR
.JAR
.JAR
.JAR
.JAR.JAR
.JAR
DTOs
Entities
3rd Party Maven
Dependencies

9. Programmers
(18) Operators
(6)
DBAs
(3)
Project
Managers
(2)
Business
Analysts
(4)
Quality
Assurance
(6)
Compliance
(2)

11. Software creates real value for the organization when in production (not
in dev, test, stage). There are lessons you can only learn in production.
Many shops take 6 to 9 months for changed code to land in production.
36 Weeks
Monolithic System
Change
Request

12. Break Up Monolith - into independently deployable services -
microservices housed in Linux Containers (Docker)
36 Weeks
Monolithic System
Change
Request 12 Weeks

13. Some microservices change faster than others - drivers include
regulation, environmental, competitive, political
36 Weeks
Monolithic System
Change
Request 9 Weeks12 Weeks

14. Improving microservice “bounded context” with every iteration
36 Weeks
Monolithic System
Change
Request 9 Weeks 612 Weeks

15. 36 Weeks
Monolithic System
Change
Request 9 Weeks 6 412 Weeks
Improved Automation + Improved Team Trust +
Refactored microservices = increased team velocity

16. Ensuring API backward compatibility allows for faster/safer deployment
36 Weeks
Monolithic System
Change
Request 9 Weeks 6 4 312 Weeks

17. 36 Weeks
Monolithic System
Change
Request 9 Weeks 6 4 3 112 Weeks
Blue/Green Deployments further aid reliability
A/B Testing in Production aids learning and improving

18. DevOps is an approach to culture, process and tools that emphasizes
collaboration and communication - delivering increased business value via
software delivery more rapidly, frequently, reliably
36 Weeks
Monolithic System
Change
Request 9 Weeks 6 4 3 1112 Weeks

20. Enterprise Service Bus

21. The One ESB
One bus to rule them all,
One bus to find them,
One bus to bring them all
And in the darkness bind them

22. WITH GREAT POWER THERE MUST ALSO COME -- GREAT RESPONSIBILITY!
Amazing Fantasy #15 (August 1962)
Photo taken with Burr’s iPhone
The Amazing Spider-Man Omnibus Vol 1

23. Conway’s Law
"Any organization that designs a system (defined more broadly here than just
information systems) will inevitably produce a design whose structure is a copy
of the organization's communication structure."
https://www.thoughtworks.com/insights/blog/demystifying-conways-law

24. Independence
aids Agility

25. Microservice Principles/Characteristics
1. Deployment Independence - updates to an individual
microservice have no negative impact to any other component of
the system. Optimized for replacement
2. API Focused
3. Do one thing well - small enough and no smaller
4. Fit in your head
5. Decentralized Data Management

26. Microservice Concerns
MyService
Resilience
Discovery
Load
Balancing
Scaling /
Elasticity
Logging
Monitoring
Build,
Deployment
Pipeline
Tracing
Invocation
Messaging /
IPC
API Authentication

27. Browser

28. Example
ACME Laptop 128GB SSD,
8GB RAM
$323.56
Touchscreen
128GB SSD
8GB RAM
Core i3
Windows 10
Add to Cart
In-Store Pickup (15 available)
Raleigh, Central Ave, Store #1123
Recommendations

29. Example
ACME Laptop 128GB SSD,
8GB RAM
$323.56
Touchscreen
128GB SSD
8GB RAM
Core i3
Windows 10
Add to Cart
In-Store Pickup (15 available)
Raleigh, Central Ave, Store #1123
Recommendations
Pricing Engine
Reviews
Details/Specifications
Location-based availability
People who purchased also...

30. Example
(Fail) ACME Laptop 128GB SSD,
8GB RAM
$323.56
Touchscreen
128GB SSD
8GB RAM
Core i3
Windows 10
Add to Cart
In-Store Pickup (15 available)
Raleigh, Central Ave, Store #1123
Recommendations
Pricing Engine
Reviews
Details/Specifications
Location-based availability
People who purchased also...
X

31. Example
(Fallback) ACME Laptop 128GB SSD,
8GB RAM
$323.56
Touchscreen
128GB SSD
8GB RAM
Core i3
Windows 10
Add to Cart
Closest store:
Raleigh, Central Ave, Store #1123
Recommendations
Pricing Engine
Reviews
Details/Specifications
Location-based availability
People who purchased also...
X

32. API “Gateway”

33. API “Gateway”
(Fail)
X

34. Chaining

35. Chaining (Fail)
X

36. Chaining (Cascading Fail)
XXXX
X

37. Mixed

38. Microservices Playground
https://github.com/redhat-helloworld-msa
http://developers.redhat.com/downloads
Container Development Kit
Helloworld MSA

39. DropWizard
www.dropwizard.io
JAX-RS API
First to market
DropWizard Metrics
Embeddable servers:
Jetty
Spring Boot
projects.spring.io/spring-boot
Spring API (@RestController)
‘Starter’ POMs:
start.spring.io
Embeddable servers:
Tomcat, Jetty, Undertow
WildFly Swarm
wildfly-swarm.io
Java EE 7 APIs
‘Starter’ POMs: wildfly-swarm.
io/generator
Embeddable servers:
WildFly (Undertow)
Opinionated & java -jar myapp.jar

40. Vert.x
(Un-Opinionated) Toolkit for reactive, async applications
Every user has their own Vert.x way
Low-latency microservices that interact using the EventBus
Built in elasticity and resiliency
Interact with anything (.NET, Go, Rust, Cobol, Java EE, Spring...)
vertx.io
http://vertx.io/blog/my-first-vert-x-3-application/

41. Vert.x EventBus
Verticle1
Verticle2
Verticle3
Verticle4
Verticle5
JVM
Vert.x Instance
Verticle1
Verticle2
Verticle6
Verticle7
JVM
Vert.x Instance
vertx.eventBus

42. Service A Service B
Circuit Breaker

43. Service A Service B
Hystrix - circuit-breaker, bulkhead

45. Majestic Monolith
https://m.signalvnoise.com/the-majestic-monolith-29166d022228
Microservices are not for everybody :-)

46. Release It!
Michael T. Nygard
(note: Java references are a bit dated but
the fail stories are brilliant)

47. @burrsutter developers.redhat.com