Cloud Native App

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Cloud Native Application

Topics
Continuous Integration
Continuous Deployment/Delivery
Microservices
DevOps
Containerization
12-factor app
Cloud native application

Cloud Computing

Cloud is about
how computing is done,
not where

Public
Private
Hybrid

https://pivotal.io/cloud-native

Changing the way of enterprise thinking
about building software

Balancing speed and agility
with operation excellence

Move fast with consistency and reliable
Release fast and often

Create business demand
and
customer value

Enable high performing teams

At scale, globally

Deliver as flexible
Scalable microservices in the cloud
Fully automate and software-define

DevOps

DevOps
Collaboration between
software developers and IT operations

DevOps
Create a culture and environment
where building, testing and release
rapidly, frequently and consistently

DevOps goals
Constantly delivering high-quality software
Solve customer challenges

Continuous Delivery

Continuous Delivery
Enabled by Agile product development

Continuous Delivery
Shipping small batches of software
Automation shipping with reliability
Less risk
Get feedback faster from end users

Microservices

Microservices
Architectural approach
to develop an application as a
collection of small services

Microservices
Deploy, Upgrade, Scale, Restart
independent of other services

Microservices
Enable frequent update to live app
without impact to end customer/user

History

Evolution of Architecture

Developer’s perspective

N-tiers

SOA
Service Oriented Architecture

SOA

SOA ?

Solution ?

SOA with ESB

WebService

WebService
https://www.w3.org/TR/ws-arch

Service Discovery
https://www.w3.org/TR/ws-arch

WSDL
WebService
UDDI
SOAP

WebService Description Language
WebService
Universal Descriptor Discovery Integration
Simple Object Access Protocol

REST API
REpresentational State Transfer

REST

Monolith
N-tier
SOA/
WebService
REST API

Rise of Microservices

Microservices
not a silver bullet

Microservices
no right way to do

Microservices
not talk about size/LoC

Microservices
represent a problem domain

Microservices
scale development, architecture
operation and infrastructure

Microservices
encapsulate your domain

Spaghetti services !!

Design Microservices ?

Design for failure

Design for failure
Nothing will fail

Evolutionary design
https://www.industriallogic.com/blog/evolutionary-design/

Evolutionary design
Management and technical practice

Evolutionary design
how we organize people and team

Evolutionary design
plan what to build

Evolutionary design
plan what to build
collaborate

Evolutionary design
plan what to build
collaborate
integrate

Evolutionary design
plan what to build
collaborate
integrate
develop and release

Evolutionary design
Most valuable practice from Agile

Evolutionary design
Most valuable practice from Agile
BUT
more people not using it !!

Why ?

It’s time to change …

+

Evolutionary design
Evolve based on
need, priority, risk and feedback

Evolutionary design
Collaboration and Integration risk

Evolutionary design
Integrate early and often

Evolutionary design
Get rapid feedback
Discover our users essential needs

Implementation ?

https://martinfowler.com/articles/microservices.html

Microservice Testing ?
https://martinfowler.com/articles/microservice-testing/

Unit
Integration
Component
Contract
End-to-end

Unit testing

Unit testing not guarantee
about the behavior of system

Integration testing

No confidence about
biz requirement are satisfied

Component testing

More high coverage
More confidence

More tests ?

Usage ?

Contract testing

End-to-end testing

Deployment ?

Lead time ?

Reduce Lead time ?

next ?

Microservice Ecosystem
https://twitter.com/mcmiller00/status/690894999370633216

Let’s see more …

https://micro-frontends.org/

Micro frontend

How to deploy & release ?

https://medium.freecodecamp.org/an-introduction-to-microservices-2705e7758f9

Let’s start with DevOps !!

Why DevOps Matters ?

Customers expectation
Expect innovation and speed
Expect services to delivery
value continuously
Expect reliable services/processes

BUT …

Problems in delivery

Conflict of Interests ?

????

Low trust create extra steps !!

Low trust create extra steps !!
http://devops.com/2015/06/22/the-simple-math-of-devops/

http://www.mindtheproduct.com/2016/02/what-the-hell-are-ci-cd-and-devops-a-cheatsheet-for-the-rest-of-us/

http://blog.scottlogic.com/2014/07/07/School-of-Testing.html

http://www.craiglarman.com/wiki/downloads/misc/history-of-iterative-larman-and-basili-ieee-computer.pdf

CI is about what people do
not about what tools they use

Discipline to integrate frequently
CI is a practice

Strive to make small change
CI is a practice

Strive for fast feedback
CI is a practice

Continuous Integration

Automate provisioning ?
Automate deployment ?
Automate monitoring ?

Traditional development

Iterative/Agile development

Lean and DevOps

One team approach

What isDevOps ?

https://channel9.msdn.com/Series/DevOps-Fundamentals/Introduction-to-DevOps

DevOps definitions
“A movement of people who care about
developing and operating reliable, secure, high
performance systems at scale.”
- Jez Humble -

DevOps definitions
“A mix of patterns intended to improve
collaboration between development and
operations. DevOps addresses shared goals
and incentives as well as shared processes
and tools.”
- Michael Huttermann -

Goals
To improve the delivery of value
for customer & business
Code Build Test Deploy Release Monitor
Idea Customer

Life cycle
https://www.linkedin.com/pulse/9-critical-steps-devops-transformation-enterprises-sakthi-vadivelu

Life cycle

http://devops.com/2016/03/15/interconnect-2016-culture-matters/

https://www.linkedin.com/pulse/9-critical-steps-devops-transformation-enterprises-sakthi-vadivelu

Principles and Practices

DevOps Principles
http://www.telehouse.com/2016/03/devops-how-a-culture-of-empathy-creates-massive-productivity/

Culture => People, Process, Tools
Automation => Infrastructure as Code
Measurement => Measure everything
Sharing => Collaboration/Feedback
DevOps Principles

DevOps Practices

DevOps culture
https://channel9.msdn.com/Series/DevOps-Fundamentals/Introduction-to-DevOps

DevOps Team Topologies

https://blog.matthewskelton.net/2013/10/22/what-team-structure-is-right-for-devops-to-flourish/

No DevOps Team
- problem department -

DevOps != Tools

But tools enable DevOps

DevOps Toolchain

https://xebialabs.com/periodic-table-of-devops-tools/

7Cs of Happiest DevOps

Communication and Collaboration

Better feedback loop

People over Process over Tools

Without automation is  
no DevOps

Automate testing ?
Automate provisioning ?
Automate deployment ?
Automate build ?
Automate monitoring ?
Automate metrics ?

Your time

Idea Customer
1. Manual pipeline

Idea Customer
2. Semi-automated pipeline

Idea Customer
3. Automated pipeline

Idea Customer
4. Fully-automated pipeline

Summary

Your DevOps transformation …

Discover Design Deliver

Continuous Improvement

DevOps !!

Infrastructure ?

Infrastructure ?
Provisioning ?

Rise of containerization

Why container ?
Software industry has changed !!

Monolith architecture

Failure in Monolith !!

Scale Monolith !!

Microservice architecture
https://martinfowler.com/articles/microservices.html

Microservice architecture

Why container ?
We have problem !!

Problem

Solution

Container vs. Virtual machine
https://www.docker.com/what-container

Virtual Machine

Container

Virtual Machine
Abstraction of physical hardware
Full copy of OS and libraries
Slow to boot

Container
Abstraction at the app level
Share OS kernel
Isolate process
Less space than Virtual Machine

Docker

Container vs Virtual machine

Container vs Virtual machine
VM Container
การใ๡้งาน resources มาก น้อย
ความเร็วของการ start/
boot
๡้า เร็ว
ความเร็วในการทํางาน ๡้า เร็ว
พื้นที่จัดเก็บ มาก น้อย

Container vs. Process

How to manage containers ?

Distributed management
Orchestration
&

12-factors app
https://12factor.net/

12-factors app ?
Methodology for building
software-as-a-service apps

12-factors app ?
Use declarative formats
for setup automation

12-factors app ?
To minimize time & cost for new developer
to joining the project

12-factors app ?
Clean contract with operating system
Maximum portability between environment

12-factors app ?
Suitable for deploy on cloud platform

12-factors app ?
Minimize divergence between
development and production

12-factors app ?
Enable continuous deployment
for maximize agility

12-factors app ?
Scale up without significant changes

Build Release Run

Build

Release

Run

1. Codebase
One codebase tracked in version control
and many deploys

2. Dependencies
Explicit declaration and isolate dependencies
Do not copy dependencies !!

3. Config
Store config in the environment

4. Backing services
Treat backing services as attached resources
Local vs 3-party services

4. Backing services

5. Build, release, run
Separate build and run stages
Impossible to make changes to code at runtime
Easy to rollback !!

6. Processes
Execute the app as one or more
stateless processes

7. Port binding
Export services via port binding

8. Concurrency
Scale out via the process model

8. Concurrency

9. Disposability
Maximize robustness with
fast startup and graceful shutdown

10. Dev/prod parity
Keep development, staging and production
as similar as possible

10. Dev/prod parity
Traditional app 12-factors app
Time between deploys Week Hours
Code authors vs deployers Different people Same people
Dev vs Prod Divergent As similar as possible

11. Logs
Logs are the stream of aggregated
Time-ordered events

11. Logs
Logs provide visibility into
the behavior of a running app

12. Admin processes
Run admin/management tasks
as one-off processes

Checklist !!
Topic Yes/No/Maybe
Use version control (svn, git)
Execution environment is isolated
Easy to access Backing service
Build, stage, run environment is separated
Support short startup and graceful shutdown
Dev env. is identical to production env.
Collect logs in the database by the another app

Thank you & Question

Cloud Native App

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