Qual'è la prima cosa che ti viene in mente se ti chiedessi di associare "container" e "architetture" ? Esatto ! Container e microservizi sono di fatto gli argomenti più chiacchierati degli ultimi anni e che spesso vanno a braccetto. Ma quand'è che i due mondi iniziano ad incontrarsi, se non nel tuo computer? Ti porterò la mia esperienza sul uso dei container per lo sviluppo di un applicativo con architettura a microservizi, partendo dalle scelte fatte fin dai primi momenti dello sviluppo fino ad arrivare alla sua messa in produzione.

1. A ❤ STORY
CONTAINER AND MICROSERVICES:

2. 👋
I’M THOMAS
NICE TO MEET YOU!

3. CONTAINER AND MICROSERVICES: A ❤ STORY

4. WHAT ABOUT
THIS
❤
STORY ?
CONTAINER AND MICROSERVICES: A ❤ STORY

5. 💼
MY FIRST WORK DAY

6. CONTAINER AND MICROSERVICES: A ❤ STORY

7. MICROSERVICE’S PROS
▸ Relatively small
▸ Improve fault isolation
▸ Develop & deploy independently
▸ Improves tuning & scaling
CONTAINER AND MICROSERVICES: A ❤ STORY

8. 🏃
MY SECOND WORK DAY

9. CONTAINER AND MICROSERVICES: A ❤ STORY
IT WAS NOT SO GOOD

10. CONTAINER AND MICROSERVICES: A ❤ STORY

11. CONTAINER AND MICROSERVICES: A ❤ STORY

12. ▸ Additional complexity of a distributed system
▸ Testing is more complex
▸ Internal process for communication purpose
▸ A bad APIs design it’s very dangerous
▸ Development environment it’s hard to setup
CONTAINER AND MICROSERVICES: A ❤ STORY
MICROSERVICE’S CONS

13. Development environment it’s
hard to setup
😤
CONTAINER AND MICROSERVICES: A ❤ STORY

14. CONTAINER AND MICROSERVICES: A ❤ STORY

15. OUR MICROSERVICES TECHNOLOGY/TOOLS
CONTAINER AND MICROSERVICES: A ❤ STORY

16. CONTAINER AND MICROSERVICES: A ❤ STORY
3 days * 2 people =
6 days!
⬇
🗑

17. CONTAINER AND MICROSERVICES: A ❤ STORY
Context
&

18. CONTAINER AND MICROSERVICES: A ❤ STORY
( )

19. CONTAINER AND MICROSERVICES: A ❤ STORY
x days * y people =
z days!

20. 🤔
CONTAINER AND MICROSERVICES: A ❤ STORY

21. CONTAINER AND MICROSERVICES: A ❤ STORY
Simulates isolate systems
Usable in more OS
Ready to use
Easy to install
Easy to use
🤔

22. CONTAINER AND MICROSERVICES: A ❤ STORY
💡

23. CONTAINER AND MICROSERVICES: A ❤ STORY
💡

24. CONTAINER AND MICROSERVICES: A ❤ STORY
🤓

25. CONTAINER AND MICROSERVICES: A ❤ STORY
Simulate isolate systems
Usable in more OS
Ready to use
Easy to install
Easy to use
🤔

26. CONTAINER AND MICROSERVICES: A ❤ STORY
DOCKER FOR MAC/WINDOWS
Docker for Mac/Windows is an easy-to-install
desktop app for building, debugging and testing
Dockerized apps on a Mac/PC.
😎

27. CONTAINER AND MICROSERVICES: A ❤ STORY
Docker platform
Docker compose
Docker CLI
Docker Notary CLI

28. CONTAINER AND MICROSERVICES: A ❤ STORY
Docker platform
Docker compose
Docker CLI
Docker Notary CLI

29. CONTAINER AND MICROSERVICES: A ❤ STORY
Simulate isolate systems
Usable in more OS
Ready to use
Easy to install
Easy to use
🤔

30. CONTAINER AND MICROSERVICES: A ❤ STORY

31. CONTAINER AND MICROSERVICES: A ❤ STORY
DEMO TIME
(

32. CONTAINER AND MICROSERVICES: A ❤ STORY
DEMO FILES
•Dockerfile
•docker-compose.yml

33. CONTAINER AND MICROSERVICES: A ❤ STORY
DOCKER IMAGE

34. DOCKER IMAGE

35. CONTAINER AND MICROSERVICES: A ❤ STORY
DOCKER IMAGE
FROM ruby
RUN apt-get update -qq && apt-get install -y build-essential
libpq-dev nodejs
RUN mkdir /my_app
WORKDIR /my_app
RUN gem install rails
File: ./my_app/Dockerfile

36. CONTAINER AND MICROSERVICES: A ❤ STORY
DOCKER IMAGE
FROM ruby
RUN apt-get update -qq && apt-get install -y build-essential
libpq-dev nodejs
RUN mkdir /my_app
WORKDIR /my_app
RUN gem install rails
File: ./my_app/Dockerfile

37. CONTAINER AND MICROSERVICES: A ❤ STORY
https://hub.docker.com/

38. CONTAINER AND MICROSERVICES: A ❤ STORY
DOCKER IMAGE
FROM ruby
RUN apt-get update -qq && apt-get install -y build-
essential libpq-dev nodejs
RUN mkdir /my_app
WORKDIR /my_app
RUN gem install rails
File: ./my_app/Dockerfile

39. CONTAINER AND MICROSERVICES: A ❤ STORY
DOCKER IMAGE
FROM ruby
RUN apt-get update -qq && apt-get install -y build-essential
libpq-dev nodejs
RUN mkdir /my_app
WORKDIR /my_app
RUN gem install rails
File: ./my_app/Dockerfile

40. CONTAINER AND MICROSERVICES: A ❤ STORY
DOCKER IMAGE
FROM ruby
RUN apt-get update -qq && apt-get install -y build-essential
libpq-dev nodejs
RUN mkdir /my_app
WORKDIR /my_app
RUN gem install rails
File: ./my_app/Dockerfile

41. CONTAINER AND MICROSERVICES: A ❤ STORY

42. CONTAINER AND MICROSERVICES: A ❤ STORY
DOCKER COMPOSE

43. CONTAINER AND MICROSERVICES: A ❤ STORY
version: '3'
services:
web:
build: ./my_app
command: bash -c "bundle install --path=/cache && rails s -p
3000 -b '0.0.0.0'"
ports:
- "4000:3000"
volumes:
- ./my_app/my_rails_app:/myapp
- ./my_app/gem_cache:/cache
depends_on:
- db
db:
image: postgres
DOCKER COMPOSE
File: ./docker-compose.yml

44. CONTAINER AND MICROSERVICES: A ❤ STORY
version: '3'
services:
web:
build: ./my_app
command: bash -c "bundle install --path=/cache && rails s -p
3000 -b '0.0.0.0'"
ports:
- "4000:3000"
volumes:
- ./my_app/my_rails_app:/myapp
- ./my_app/gem_cache:/cache
depends_on:
- db
db:
image: postgres
DOCKER COMPOSE
File: ./docker-compose.yml

45. CONTAINER AND MICROSERVICES: A ❤ STORY
version: '3'
services:
web:
build: ./my_app
command: bash -c "bundle install --path=/cache && rails s -p
3000 -b '0.0.0.0'"
ports:
- "4000:3000"
volumes:
- ./my_app/my_rails_app:/myapp
- ./my_app/gem_cache:/cache
depends_on:
- db
db:
image: postgres
DOCKER COMPOSE
File: ./docker-compose.yml

46. CONTAINER AND MICROSERVICES: A ❤ STORY
version: '3'
services:
web:
build: ./my_app
command: bash -c "bundle install --path=/cache && rails s -p
3000 -b '0.0.0.0'"
ports:
- "4000:3000"
volumes:
- ./my_app/my_rails_app:/myapp
- ./my_app/gem_cache:/cache
depends_on:
- db
db:
image: postgres
DOCKER COMPOSE
File: ./docker-compose.yml

47. CONTAINER AND MICROSERVICES: A ❤ STORY
version: '3'
services:
web:
build: ./my_app
command: bash -c "bundle install --path=/cache && rails s -p
3000 -b '0.0.0.0'"
ports:
- "4000:3000"
volumes:
- ./my_app/my_rails_app:/myapp
- ./my_app/gem_cache:/cache
depends_on:
- db
db:
image: postgres
DOCKER COMPOSE
File: ./docker-compose.yml

48. CONTAINER AND MICROSERVICES: A ❤ STORY
version: '3'
services:
web:
build: ./my_app
command: bash -c "bundle install --path=/cache && rails s
-p 3000 -b '0.0.0.0'"
ports:
- "4000:3000"
volumes:
- ./my_app/my_rails_app:/myapp
- ./my_app/gem_cache:/cache
depends_on:
- db
db:
image: postgres
DOCKER COMPOSE
File: ./docker-compose.yml

49. CONTAINER AND MICROSERVICES: A ❤ STORY
version: '3'
services:
web:
build: ./my_app
command: bash -c "bundle install --path=/cache && rails s -p
3000 -b '0.0.0.0'"
ports:
- "4000:3000"
volumes:
- ./my_app/my_rails_app:/myapp
- ./my_app/gem_cache:/cache
depends_on:
- db
db:
image: postgres
DOCKER COMPOSE
File: ./docker-compose.yml

50. CONTAINER AND MICROSERVICES: A ❤ STORY
version: '3'
services:
web:
build: ./my_app
command: bash -c "bundle install --path=/cache && rails s -p
3000 -b '0.0.0.0'"
ports:
- "4000:3000"
volumes:
- ./my_app/my_rails_app:/myapp
- ./my_app/gem_cache:/cache
depends_on:
- db
db:
image: postgres
DOCKER COMPOSE
File: ./docker-compose.yml

51. CONTAINER AND MICROSERVICES: A ❤ STORY
version: '3'
services:
web:
build: ./my_app
command: bash -c "bundle install --path=/cache && rails s -p
3000 -b '0.0.0.0'"
ports:
- "4000:3000"
volumes:
- ./my_app/my_rails_app:/myapp
- ./my_app/gem_cache:/cache
depends_on:
- db
db:
image: postgres
DOCKER COMPOSE
File: ./docker-compose.yml

52. CONTAINER AND MICROSERVICES: A ❤ STORY
( )
WEB DB WEB DB

53. CONTAINER AND MICROSERVICES: A ❤ STORY
0.25 days * 2 people =
0.5 day!

54. CONTAINER AND MICROSERVICES: A ❤ STORY

55. CONTAINER AND MICROSERVICES: A ❤ STORY
IT’S TIME TO SAY GOODBYE 😢

56. CONTAINER AND MICROSERVICES: A ❤ STORY
BUT FIRST…

57. CONTAINER AND MICROSERVICES: A ❤ STORY
▸ Microservices
▸ Docker compose
▸ How portable and repeatable development
environment save your time!
…WHAT HAVE WE SEEN TODAY?

58. CONTAINER AND MICROSERVICES: A ❤ STORY
SO, WHY I’M IN ❤?
▸ Microservices architecture gave me a new point
of view
▸ Thanks to microservices, I found a way to use
and understand containers
▸ Life is too short for waste your time

59. “YOUR WORK IS GOING TO FILL A LARGE
PART OF YOUR LIFE, AND THE ONLY WAY
TO BE TRULY SATISFIED IS TO DO WHAT
YOU BELIEVE IS GREAT WORK. AND
THE ONLY WAY TO DO GREAT
WORK IS TO LOVE WHAT YOU DO.”
STEVE JOBS
CONTAINER AND MICROSERVICES: A ❤ STORY

60. 🙏
THANK YOU!

61. 🙋1
QUESTIONS?

62. @Rosse91
Software developer @ Seesaw
Coordinator of
Programmers in Padua
community

63. 👋
THANKS FOR
COMING
HAVE A NICE DAY
SEE YOU AROUND!