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Continuous Delivery

Practices and real experiences

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Hi!

I’m Eduardo Ferro

VP Platform Engineering Nextail

Available at:

@eferro

https://www.eferro.net

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Agile & DevOps

What the data says

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Accelerate: The Science of Lean Software and Devops (link) / DORA Report 2019 (link)

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Accelerate: The Science of Lean Software and Devops (link) / DORA Report 2019 (link)

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Accelerate: The Science of Lean Software and Devops (link) / DORA Report 2019 (link)

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Myth

Velocity increase

Deployment Frequency

Stability/Availability decrease

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Built-in Quality

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“Firms with high-performing IT organizations were twice as likely to exceed their profitability, market share and productivity goals”

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Built-in Quality

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DORA Report 2019 (link)

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DORA Report 2019 (link)

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Agile & DevOps Works!!!

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Should work, right?

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According to Gartner 70% of the IT market is focusing on DevOps and another study found that 88% of organizations have adopted agile...

Chris Richardson

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According to Gartner 70% of the IT market is focusing on DevOps and another study found that 88% of organizations have adopted agile, but only 26% of organizations have broadly adopted test automations.

Chris Richardson

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We are agile, we use Scrum... We don't use any of the agile technical practices nor do we know what XP is.

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Continuous Delivery

¿What? ¿How?

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Continuous Delivery is the ability to get changes of all types—including new features, configuration changes, bug fixes and experiments

https://www.continuousdelivery.com Jez Humble (link)

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Continuous Delivery is the ability to get changes of all types—including new features, configuration changes, bug fixes and experiments—into production, or into the hands of users

https://www.continuousdelivery.com Jez Humble (link)

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Continuous Delivery is the ability to get changes of all types—including new features, configuration changes, bug fixes and experiments—into production, or into the hands of users, safely and quickly in a sustainable way.

https://www.continuousdelivery.com Jez Humble (link)

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Continuous Delivery

  • Test automation
  • Deployment automation
  • Continuous Integration
  • Trunk based development
  • Loosely coupled architectures
  • Version control
  • Monitoring / Proactive Notifications

Accelerate: The Science of Lean Software and Devops (link) / DORA Report 2019 (link)

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Test Automation

  • XP practice (TDD, Customer tests)
  • Unit test (fast), integration, acceptance
  • Other
    • End2end tests
    • Load tests
    • Test in production

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Deployment automation

  • Automate deployment pipelines
  • Remove human errors
  • Deployment vs Releasing

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Continuous Integration

  • XP practice
  • Trunk branch always prepared for deployment
  • Every dev merge to trunk every day
  • High confidence (TDD, Acceptance tests)
  • Automated build
  • It's not: using jenkins in Feature Branches

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Trunk based development

  • No feature branches or shorter than one day
  • Small increments
  • Each increment deployed to production
  • Require
    • Feature flags
    • Parallel changes
    • Split in small increments (Agile skill)

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https://trunkbaseddevelopment.com/ (link)

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Loosely coupled architectures

  • Service oriented architecture
  • Bounded Context (DDD)
  • Hexagonal Architecture / Clean Architecture
  • Each service
    • Individual deployment
    • Can change autonomously

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Versión Control

  • Code
  • Configuration
  • Infrastructure
  • Experiments

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Monitoring and proactive notifications

  • Production system Feedback
  • Architecture validation (fitness functions)
  • Instrumentation / Observability

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DORA Report 2019 (link)

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Real Experiences

Agile & Devops

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Nextail 2018-Now

  • Deployment frequency 1-3/day, cloud, SaaS
  • On our way to XP & DevOps
  • TDD (not always)
  • Pairing/Mob (>30%)
  • Collective ownership (Product/Code)
  • Trunk base development (not always)
  • Hexagonal architecture (for new services)
  • Splitting the monolith

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Nextail 2018-Now

  • Continuous Integration: Partially (on the way)
  • Continuous Delivery: For all the services
  • Continuous Deployment: Not yet
  • Infrastructure as a Code: Terraform
  • Immutable infrastructure: Yes (aws: eks k8s)
  • Deployment patterns:
    • Canary releasing, Rolling Deploys

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TheMotion 2015-2018

  • Deployment frequency 5-10/day, cloud, SaaS
  • XP & DevOps practices
  • TDD
  • Pairing/Mob (>70%)
  • Collective ownership (Product/Code)
  • Trunk base development
  • Hexagonal architecture
  • Microservices, Event driven architecture

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TheMotion 2015-2018

  • Continuous Integration: For all the services
  • Continuous Delivery: For all the services
  • Continuous Deployment: Not for all services
  • Infrastructure as a Code: Ansible, Terraform
  • Immutable infrastructure: Yes (aws: ECS)
  • Deployment patterns:
    • Canary releasing, Rolling Deploys

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Alea Soluciones 2012-2016

  • Deployment frequency 5-10/week, on-prem
  • XP & DevOps practices
  • TDD
  • Pairing/Mob (>70%)
  • Collective ownership (Product/Code)
  • Trunk base development
  • Hexagonal architecture
  • Service-oriented architecture

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Alea Soluciones 2012-2016

  • Continuous Integration: For all the services
  • Continuous Delivery: For all the services
  • Continuous Deployment: Not for all services
  • Infrastructure as a Code: Puppet, Ansible
  • Immutable infrastructure: Partially (docker)
  • Deployment patterns:
    • Canary releasing, Zero downtime deployment

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Thank You!

and now, let’s discuss

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@eferro

https://www.eferro.net

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