The document discusses the evolution of Platform as a Service (PaaS) for Java developers, highlighting the transition from pre-2011 limitations to the advantages offered by OpenShift since 2011. OpenShift allows rapid application development with cloud portability, avoiding vendor lock-in and providing multiple language support and scaling features. It emphasizes the ease of deployment, developer productivity, and the benefits of using tools like Spring and MongoDB for building cloud-aware applications.

2. A Happy Cloud Friendly Java Developer with OpenShift Shekhar Gulati Xebia

4. Why PaaS Is Important? Avoids getting caught up in systems management or other lower level concerns.

5. Lets developer focus on his job i.e. to write code.

6. You develop “Cloud Aware “ applications from bottom up.

7. Automatic Scaling.

8. Improves developer productivity.

9. As a developer it gives you power to prototype and create application rapidly.

11. Pre 2011 Java Developer was Sad PaaS == Problem as a Service

12. Issues with pre 2011 PaaS Can't run existing code.

13. Tied to particular environment.

14. Vendor lock-in (lack of cloud portability).

15. Deployment on public cloud only.

16. Need to change the mindset.

17. Diluted frameworks.

18. Fewer Options or Choices.

19. Things changed in 2011

21. Enter OpenShift Multi Language, Multi Frameworks, Multi Cartridges , Multi Cloud (future).

22. Cloud Portability.

23. No Proprietary Software.

24. No Need to change your code or learn something new.

25. Comes in three flavors Express, Flex and Power .

26. OpenShift Express Java, Perl, Python, PHP, and Ruby

27. Command Line,Eclipse & Forge plugin

28. Jenkins Support

29. MySQL, PostgreSQL,and MongoDB

30. Client Tools for data stores

31. Runs on top of EC2 but free

32. Supports 5 applications per user.

33. Multi tenant

34. Shell Access.

35. Get Started With Express Sign up at OpenShift website

36. Install client tools. RHC Ruby Gem ,Eclipse Plugin

37. Create Domain

38. Create Application

39. Deploy using GIT. Just do git push.

40. I have written Spring Roo OpenShift Express add-on

41. Demo – OpenShift Express PasteBin Clone with a twist. Spring Application

42. MongoDB datastore

43. Spring Roo

44. Jenkins Support.

45. What is Spring? An open source, lightweight, modular, and extensible application framework.

46. Non invasive (POJO based)

47. What is MongoDB? Document Database

48. Each document is heterogeneous, and may have completely unique structure compared to other documents.

49. Fast and horizontally scalable.

50. Terminology Database -> Database

51. Table -> Collection

52. Row -> Document

53. What is Spring Roo? Easy to use productivity tool

54. Code generator – Spring based enterprise applications.

55. Use best of breed.

56. Development time only. No runtime

57. No negative performance impact

58. No memory overhead

59. No Roo deployment

60. OpenShift Express Limitations Five 512 MB RAM instances

61. Java Max Heap Memory and permgen limitations

62. 100 process which translates to 80 Java Threads.

63. Currently, I think it is good for rapid prototyping.

65. Enter OpenShift Flex Java and PHP

66. Web UI and Command Line(Not tried)

67. Runs on your dedicated EC2 instance.

68. JBoss, Apache Web Server and Tomcat, MySQL, Memcached, Membase, Infinispan, MRG Messaging and MongoDB

69. Supports shell access.

70. Configure Components, Auto-Scaling, Performance Monitoring, Log Management

71. Coolest – Cost Calculator (I think)

72. Demo 2 Getting Started with Flex

73. Demo 3 – Deploying Application PasteBin Clone with a twist. Spring Application

74. MongoDB datastore

75. Spring Roo

76. Already created application.

77. Demo 4 –MongoDB Replica Set Scaling MongoDB Reads

78. Demo 5 Managing Overload- Scalability

79. OpenShift Flex Monitoring Performance

80. Conclusion Its a great time to be a Java developer

81. It is very easy to deploy existing applications.

82. Developer have to only focus on writing code and new apps not raising tickets.

83. Try OpenShift. It is awesome.

84. In case you want to know my details.. Senior Java Consultant at Xebia

85. Spring portfolio projects , Big Data, NoSQL, Cloud enthusiast.

86. Freelance Writer

87. [email_address]

88. Twitter handle : shekhargulati

89. Thanks for listening