12-factor-jruby
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The document discusses the 12 factor app methodology for building software-as-a-service applications. It covers the 12 factors which are codebase, dependencies, configuration, backing services, build/release/run, processes, port binding, concurrency, disposability, development/production parity, logs, and admin processes. The presentation provides examples and explanations of how to design apps adhering to these 12 factors for scalability, maintainability and portability.
![database.yml
production:
url: <%= ENV['DATABASE_URL']%>
GOOD](https://image.slidesharecdn.com/jrubyconf-2015-150731092727-lva1-app6891/85/12-factor-jruby-39-320.jpg)
![database.yml
production:
url: <%= ENV['DATABASE_URL']%>](https://image.slidesharecdn.com/jrubyconf-2015-150731092727-lva1-app6891/85/12-factor-jruby-42-320.jpg)
12-factor-jruby
- 1. 12 Factor App Best Practices for JRuby Deployment
- 2. Joe Kutner @codefinger JVM Platform Owner @Heroku Joe Kutner
- 3. deployment, deployment, deployment, deployment
- 4. This book is wrong now!
- 8. 2005 2015 WAR files JAR files App Servers Microservices Hot Deploy Continuous Deploy Server in a closet Heroku/AWS/etc
- 10. 12 Factor App a methodology Scalability Maintainability Portability
- 11. • Immutable • Ephemeral • Declarative • Automated
- 12. The 12 Factors • Codebase • Dependencies • Config • Backing services • Build, release, run • Processes • Port binding • Concurrency • Disposability • Dev/prod parity • Logs • Admin processes
- 14. The 12 Factors • Codebase • Dependencies • Config • Backing services • Build, release, run • Processes • Port binding • Concurrency • Disposability • Dev/prod parity • Logs • Admin processes
- 15. The 12 Factors • Codebase • Dependencies • Config • Backing services • Build, release, run • Processes • Port binding • Concurrency • Disposability • Dev/prod parity • Logs • Admin processes
- 19. BAD
- 20. BAD App #1 App #2
- 21. Submodules
- 22. The 12 Factors • Codebase • Dependencies • Config • Backing services • Build, release, run • Processes • Port binding • Concurrency • Disposability • Dev/prod parity • Logs • Admin processes
- 23. Never rely on implicit existence of system-wide packages Explicitly declare and isolate dependencies
- 24. Don’t check JAR files into Git
- 26. JBundler
- 28. $ gem install jbundler ... $ jbundle install ... $ jbundle console ...
- 30. $ jbundle install --vendor ... $ tree vendor/jars/ vendor/jars/ !"" io # $"" netty # $"" netty-all # $"" 4.0.28.Final # $"" netty-all-4.0.28.Final.jar $"" jbundler.rb 4 directories, 2 files
- 31. The 12 Factors • Codebase • Dependencies • Config • Backing services • Build, release, run • Processes • Port binding • Concurrency • Disposability • Dev/prod parity • Logs • Admin processes
- 32. • Resource handles to the database, Memcached, and other backing services • Credentials to external services such as Amazon S3 or Twitter • Per-deploy values such as the canonical hostname for the deploy Anything that changes between deployment environments: (does not include things like config/routes.rb) Configuration is…
- 33. Configuration should be strictly separated from code
- 34. Don’t check passwords into Git
- 36. Can you make your app open source at any moment, without compromising any credentials? Litmus Test
- 37. Configuration belongs in the environment, not in the application
- 38. database.yml dev: username: everyone password: 1234567 … test: username: everyone password: 1234567 … production: username: admin password: 89haiusdf90fasd ... BAD
- 40. The 12 Factors • Codebase • Dependencies • Config • Backing services • Build, release, run • Processes • Port binding • Concurrency • Disposability • Dev/prod parity • Logs • Admin processes
- 43. The 12 Factors • Codebase • Dependencies • Config • Backing services • Build, release, run • Processes • Port binding • Concurrency • Disposability • Dev/prod parity • Logs • Admin processes
- 45. $ jrubyc ... $ rake assets:precompile $ warble executable war $ ./gradlew build build
- 46. $ heroku deploy:jar -j myapp.war $ mvn heroku:deploy $ scp myapp.war prod-server:~ $ docker push ... release
- 47. $ java -jar myapp.war $ bundle exec puma ... run $ /var/tomcat/start.sh $ service tomcat start $ torquebox start
- 48. $ git push heroku master build, release, & run
- 49. The 12 Factors • Codebase • Dependencies • Config • Backing services • Build, release, run • Processes • Port binding • Concurrency • Disposability • Dev/prod parity • Logs • Admin processes
- 50. DEMO!
- 51. The 12 Factors • Codebase • Dependencies • Config • Backing services • Build, release, run • Processes • Port binding • Concurrency • Disposability • Dev/prod parity • Logs • Admin processes
- 52. Processes should be stateless
- 54. The 12 Factors • Codebase • Dependencies • Config • Backing services • Build, release, run • Processes • Port binding • Concurrency • Disposability • Dev/prod parity • Logs • Admin processes
- 55. The twelve-factor app is completely self-contained The web app exports HTTP as a service by binding to a port
- 58. Dropwizard
- 59. The 12 Factors • Codebase • Dependencies • Config • Backing services • Build, release, run • Processes • Port binding • Concurrency • Disposability • Dev/prod parity • Logs • Admin processes
- 60. GIL RELAX BRO, I GOT THIS…
- 63. The 12 Factors • Codebase • Dependencies • Config • Backing services • Build, release, run • Processes • Port binding • Concurrency • Disposability • Dev/prod parity • Logs • Admin processes
- 64. Graceful shutdown Quick startup Resilience to failure
- 65. Servers are not pets Servers are cattle
- 66. Application Servers are not disposable
- 68. Easy to replace Decoupled from external infrastructure Easy to modify
- 69. Microservices
- 70. The 12 Factors • Codebase • Dependencies • Config • Backing services • Build, release, run • Processes • Port binding • Concurrency • Disposability • Dev/prod parity • Logs • Admin processes
- 74. The 12 Factors • Codebase • Dependencies • Config • Backing services • Build, release, run • Processes • Port binding • Concurrency • Disposability • Dev/prod parity • Logs • Admin processes
- 75. The 12 Factors • Codebase • Dependencies • Config • Backing services • Build, release, run • Processes • Port binding • Concurrency • Disposability • Dev/prod parity • Logs • Admin processes
- 76. Admin tasks should be run in isolated processes
- 77. $ heroku run jirb Running `rails console` attached to terminal... up, run.1594 Loading production environment (Rails 4.1.4) irb(main):001:0>
- 79. The 12 Factors • Codebase • Dependencies • Config • Backing services • Build, release, run • Processes • Port binding • Concurrency • Disposability • Dev/prod parity • Logs • Admin processes
- 81. warble executable war1. gem install jbundle2. Remove all passwords3. Kill your app. Then restart it. Time it.4. What next?
- 82. Joe Kutner @codefinger JVM Platform Owner @Heroku http://www.slideshare.net/jkutner/12-factor-jruby