Cloud Messaging With Cloud Foundry
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The document discusses cloud messaging in relation to Cloud Foundry, presenting the challenges developers face when implementing features such as user notifications and image handling in applications. It emphasizes the evolution of code to accommodate new requirements and proposes messaging as a solution to enhance scalability and decoupling in applications. Additionally, RabbitMQ is introduced as a multi-protocol messaging server that supports various platforms and can be utilized within Cloud Foundry for effective communication between applications.
Cloud Messaging With Cloud Foundry
- 1. Cloud Messaging with Cloud Foundry Álvaro Videla - VMware © 2012 VMware, Inc. All rights reserved. Tuesday, November 13, 12
- 2. About Me • Developer Advocate for Cloud Foundry • Blog: http://videlalvaro.github.com/ • Twitter: @old_sound 2 Tuesday, November 13, 12
- 3. About Me • Developer Advocate for Cloud Foundry • Blog: http://videlalvaro.github.com/ • Twitter: @old_sound • I created gifsockets™ 3 Tuesday, November 13, 12
- 4. About Me Co-authored RabbitMQ in Action http://bit.ly/rabbitmq 4 Tuesday, November 13, 12
- 5. Classic Apps 5 Tuesday, November 13, 12
- 6. Implement a Photo Gallery Tuesday, November 13, 12
- 7. Two Parts: Tuesday, November 13, 12
- 8. Pretty Simple Tuesday, November 13, 12
- 9. ‘Till new requirements arrive Tuesday, November 13, 12
- 10. The Product Owner Tuesday, November 13, 12
- 11. Can we also notify the user friends when she uploads a new image? Tuesday, November 13, 12
- 12. Can we also notify the user friends when she uploads a new image? I forgot to mention we need it for tomorrow… Tuesday, November 13, 12
- 13. Tuesday, November 13, 12
- 14. The Social Media Guru Tuesday, November 13, 12
- 15. We need to give badges to users for each picture upload Tuesday, November 13, 12
- 16. We need to give badges to users for each picture upload and post uploads to Twitter Tuesday, November 13, 12
- 17. Tuesday, November 13, 12
- 18. The Sysadmin Tuesday, November 13, 12
- 19. Dumb! You’re delivering full size images! The bandwidth bill has tripled! Tuesday, November 13, 12
- 20. Dumb! You’re delivering full size images! The bandwidth bill has tripled! We need this fixed for yesterday! Tuesday, November 13, 12
- 21. Tuesday, November 13, 12
- 22. The Developer in the other team Tuesday, November 13, 12
- 23. I need to call your PHP stuff but from Python Tuesday, November 13, 12
- 24. I need to call your PHP stuff but from Python And also Java starting next week Tuesday, November 13, 12
- 25. Tuesday, November 13, 12
- 26. The User Tuesday, November 13, 12
- 27. I don’t want to wait till your app resizes my image! Tuesday, November 13, 12
- 28. You Tuesday, November 13, 12
- 29. Tuesday, November 13, 12
- 30. Let’s see the code evolution 30 Tuesday, November 13, 12
- 31. Pseudo Code Comments %% image_controller handle('PUT', "/user/image", ReqData) -> image_handler:do_upload(ReqData:get_file()), ok. Tuesday, November 13, 12
- 32. Pseudo Code Function Name %% image_controller handle('PUT', "/user/image", ReqData) -> image_handler:do_upload(ReqData:get_file()), ok. Tuesday, November 13, 12
- 33. Pseudo Code Arguments %% image_controller handle('PUT', "/user/image", ReqData) -> image_handler:do_upload(ReqData:get_file()), ok. Tuesday, November 13, 12
- 34. Pseudo Code Function Body %% image_controller handle('PUT', "/user/image", ReqData) -> image_handler:do_upload(ReqData:get_file()), ok. Tuesday, November 13, 12
- 35. Pseudo Code Return Value %% image_controller handle('PUT', "/user/image", ReqData) -> image_handler:do_upload(ReqData:get_file()), ok. Tuesday, November 13, 12
- 36. First Implementation: %% image_controller handle('PUT', "/user/image", ReqData) -> image_handler:do_upload(ReqData:get_file()), ok. Tuesday, November 13, 12
- 37. Second Implementation: %% image_controller handle('PUT', "/user/image", ReqData) -> {ok, Image} = image_handler:do_upload(ReqData:get_file()), resize_image(Image), ok. Tuesday, November 13, 12
- 38. Third Implementation: %% image_controller handle('PUT', "/user/image", ReqData) -> {ok, Image} = image_handler:do_upload(ReqData:get_file()), resize_image(Image), notify_friends(ReqData:get_user()), ok. Tuesday, November 13, 12
- 39. Fourth Implementation: %% image_controller handle('PUT', "/user/image", ReqData) -> {ok, Image} = image_handler:do_upload(ReqData:get_file()), resize_image(Image), notify_friends(ReqData:get_user()), add_points_to_user(ReqData:get_user()), ok. Tuesday, November 13, 12
- 40. Final Implementation: %% image_controller handle('PUT', "/user/image", ReqData) -> {ok, Image} = image_handler:do_upload(ReqData:get_file()), resize_image(Image), notify_friends(ReqData:get_user()), add_points_to_user(ReqData:get_user()), tweet_new_image(User, Image), ok. Tuesday, November 13, 12
- 41. Can our code scale to new requirements? 41 Tuesday, November 13, 12
- 42. What if 42 Tuesday, November 13, 12
- 43. What if • We need to speed up image conversion 43 Tuesday, November 13, 12
- 44. What if • We need to speed up image conversion • User notification has to be sent by email 44 Tuesday, November 13, 12
- 45. What if • We need to speed up image conversion • User notification has to be sent by email • Stop tweeting about new images 45 Tuesday, November 13, 12
- 46. What if • We need to speed up image conversion • User notification has to be sent by email • Stop tweeting about new images • Resize in different formats 46 Tuesday, November 13, 12
- 47. What if • We need to speed up image conversion • User notification has to be sent by email • Stop tweeting about new images • Resize in different formats • Swap Language / Technology 47 Tuesday, November 13, 12
- 48. What if • We need to speed up image conversion • User notification has to be sent by email • Stop tweeting about new images • Resize in different formats • Swap Language / Technology (No Down Time) 48 Tuesday, November 13, 12
- 49. Can we do better? 49 Tuesday, November 13, 12
- 50. Sure. Using messaging 50 Tuesday, November 13, 12
- 51. Design Publish / Subscribe Pattern Tuesday, November 13, 12
- 52. First Implementation: %% image_controller handle('PUT', "/user/image", ReqData) -> {ok, Image} = image_handler:do_upload(ReqData:get_file()), Msg = #msg{user = ReqData:get_user(), image = Image}, publish_message('new_image', Msg). Tuesday, November 13, 12
- 53. First Implementation: %% image_controller handle('PUT', "/user/image", ReqData) -> {ok, Image} = image_handler:do_upload(ReqData:get_file()), Msg = #msg{user = ReqData:get_user(), image = Image}, publish_message('new_image', Msg). %% friends notifier on('new_image', Msg) -> notify_friends(Msg.user, Msg.image). Tuesday, November 13, 12
- 54. First Implementation: %% image_controller handle('PUT', "/user/image", ReqData) -> {ok, Image} = image_handler:do_upload(ReqData:get_file()), Msg = #msg{user = ReqData:get_user(), image = Image}, publish_message('new_image', Msg). %% friends notifier on('new_image', Msg) -> notify_friends(Msg.user, Msg.image). %% points manager on('new_image', Msg) -> add_points(Msg.user, 'new_image'). Tuesday, November 13, 12
- 55. First Implementation: %% image_controller handle('PUT', "/user/image", ReqData) -> {ok, Image} = image_handler:do_upload(ReqData:get_file()), Msg = #msg{user = ReqData:get_user(), image = Image}, publish_message('new_image', Msg). %% friends notifier on('new_image', Msg) -> notify_friends(Msg.user, Msg.image). %% points manager on('new_image', Msg) -> add_points(Msg.user, 'new_image'). %% resizer on('new_image', Msg) -> resize_image(Msg.image). Tuesday, November 13, 12
- 56. Second Implementation: Tuesday, November 13, 12
- 57. Second Implementation: THIS PAGE INTENTIONALLY LEFT BLANK Tuesday, November 13, 12
- 58. Tuesday, November 13, 12
- 59. Messaging 59 Tuesday, November 13, 12
- 60. Messaging • Share data across processes 60 Tuesday, November 13, 12
- 61. Messaging • Share data across processes • Processes can be part of different apps 61 Tuesday, November 13, 12
- 62. Messaging • Share data across processes • Processes can be part of different apps • Apps can live in different machines 62 Tuesday, November 13, 12
- 63. Messaging • Share data across processes • Processes can be part of different apps • Apps can live in different machines • Communication is Asynchronous 63 Tuesday, November 13, 12
- 64. Main Concepts 64 Tuesday, November 13, 12
- 65. Main Concepts • Messages are sent by Producers 65 Tuesday, November 13, 12
- 66. Main Concepts • Messages are sent by Producers • Messages are delivered to Consumers 66 Tuesday, November 13, 12
- 67. How can we start using messaging today? 67 Tuesday, November 13, 12
- 68. Enter 68 Tuesday, November 13, 12
- 69. Why Cloud Foundry is Good™ for Messaging? 69 Tuesday, November 13, 12
- 70. Key aspects of Cloud Foundry 70 Tuesday, November 13, 12
- 71. Key aspects of Cloud Foundry • Supports many apps per account 71 Tuesday, November 13, 12
- 72. Key aspects of Cloud Foundry • Supports many apps per account • Supports many services per account 72 Tuesday, November 13, 12
- 73. Key aspects of Cloud Foundry • Supports many apps per account • Supports many services per account • Services can be shared across apps 73 Tuesday, November 13, 12
- 74. Key aspects of Cloud Foundry • Supports many apps per account • Supports many services per account • Services can be shared across apps • Supports RabbitMQ by default 74 Tuesday, November 13, 12
- 75. Intermission: What is RabbitMQ 75 Tuesday, November 13, 12
- 76. RabbitMQ 76 Tuesday, November 13, 12
- 77. RabbitMQ • Multi Protocol Messaging Server 77 Tuesday, November 13, 12
- 78. RabbitMQ • Multi Protocol Messaging Server • Open Source (MPL) 78 Tuesday, November 13, 12
- 79. RabbitMQ • Multi Protocol Messaging Server • Open Source (MPL) • Part of Spring Source 79 Tuesday, November 13, 12
- 80. RabbitMQ • Multi Protocol Messaging Server • Open Source (MPL) • Part of Spring Source • Supports AMQP, STOMP, MQTT 80 Tuesday, November 13, 12
- 81. RabbitMQ • Multi Protocol Messaging Server • Open Source (MPL) • Part of Spring Source • Supports AMQP, STOMP, MQTT • Has Clients for Many Platforms: Java, Ruby, node.js, PHP, Erlang, .Net., more 81 Tuesday, November 13, 12
- 82. TELL ME MORE 82 Tuesday, November 13, 12
- 83. TELL ME MORE RabbitMQ Simulator Demo 83 Tuesday, November 13, 12
- 84. Sample App: CloudStagram 84 Tuesday, November 13, 12
- 85. Sample App: CloudStagram 85 Tuesday, November 13, 12
- 86. Sample App: CloudStagram 86 Tuesday, November 13, 12
- 87. Sample App: CloudStagram 87 Tuesday, November 13, 12
- 88. Sample App: CloudStagram 88 Tuesday, November 13, 12
- 89. Sample App: CloudStagram 89 Tuesday, November 13, 12
- 90. Sample App: CloudStagram 90 Tuesday, November 13, 12
- 91. Sample App: CloudStagram Frontend App node.js 91 Tuesday, November 13, 12
- 92. Sample App: CloudStagram Frontend App node.js Image Resizers node.js 92 Tuesday, November 13, 12
- 93. Sample App: CloudStagram Frontend App node.js Image Resizers Clojure 93 Tuesday, November 13, 12
- 94. CODE OR IT DIDN’T HAPPEN 94 Tuesday, November 13, 12
- 95. CODA 95 Tuesday, November 13, 12
- 96. Messaging 96 Tuesday, November 13, 12
- 97. Scale Messaging 97 Tuesday, November 13, 12
- 98. Scale Decoupling Messaging 98 Tuesday, November 13, 12
- 99. Scale Decoupling Messaging Polyglot 99 Tuesday, November 13, 12
- 100. 100 Tuesday, November 13, 12
- 101. Heavy Lifting 101 Tuesday, November 13, 12
- 102. Heavy Multi Lifting Apps 102 Tuesday, November 13, 12
- 103. Heavy Multi Lifting Apps Multi Services 103 Tuesday, November 13, 12
- 104. Heavy Multi Lifting Apps Multi Cloud Services Messaging 104 Tuesday, November 13, 12
- 105. Sign Up Today https://my.cloudfoundry.com/signup 105 Tuesday, November 13, 12
- 106. Questions? 106 Tuesday, November 13, 12
- 107. Thanks! Álvaro Videla http://twitter.com/old_sound http://github.com/videlalvaro http://www.slideshare.net/old_sound 107 Tuesday, November 13, 12