Accessible Video Anywhere with ColdFusion an AWS
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This document discusses building an accessible video platform using ColdFusion and AWS services. It begins with an overview of relevant laws and forces around accessibility. It then covers various AWS services that could be used like S3, CloudFront, Elastic Transcoder, Lambda, DynamoDB, SNS, and SES. Version 2 of the architecture is described using these services. Version 3 improvements around file naming, error handling, and utilities are discussed. Challenges around security, timeouts, retries, and debugging are covered. Benefits of using AWS include no servers to maintain, fast performance, low cost, and ability to learn new technologies. The presentation concludes by encouraging questions.
Accessible Video Anywhere with ColdFusion an AWS
- 2. Accessible Video Anywhere with ColdFusion and AWS Brian Klaas Johns Hopkins University bklaas@jhu.edu @brian_klaas
- 3. Forces Caveat Overview AWS Services v2 v3 Problems WinsForces
- 5. Forces Caveat Overview AWS Services v2 v3 Problems WinsForces Section 504 Section 508 Title III
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- 11. Accessible Video Anywhere with ColdFusion and AWS Brian Klaas Johns Hopkins University bklaas@jhu.edu @brian_klaas
- 12. Forces Caveat Overview AWS Services v2 v3 Problems WinsCaveat
- 13. Forces Caveat Overview AWS Services v2 v3 Problems WinsCaveat
- 14. Forces Caveat Overview AWS Services v2 v3 Problems WinsCaveat Architecture !code
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- 16. Forces Caveat Overview AWS Services v2 v3 Problems WinsOverview So…
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- 18. Forces Caveat Overview AWS Services v2 v3 Problems WinsOverview
- 19. Forces Caveat Overview AWS Services v2 v3 Problems Wins Simple Storage Service S3 AWS Services
- 20. Forces Caveat Overview AWS Services v2 v3 Problems WinsAWS Services <cffile action=“read” file=“s3://somebucket/somefile.txt” variable=“fileData”/> <cfdirectory action=“list” directory=“s3://somebucket/someDirectory”/>
- 21. Forces Caveat Overview AWS Services v2 v3 Problems Wins Simple Storage Service S3 AWS Services CloudFront
- 22. Forces Caveat Overview AWS Services v2 v3 Problems WinsAWS Services
- 23. Forces Caveat Overview AWS Services v2 v3 Problems WinsAWS Services http://myDistribution.cloudFront.net/myFile/inS3.mp4 Protect files with signatures or by geographic region $50/month per TB of traffic CloudFront
- 24. Forces Caveat Overview AWS Services v2 v3 Problems WinsAWS Services We built nothing.
- 25. Forces Caveat Overview AWS Services v2 v3 Problems WinsOverview
- 26. Forces Caveat Overview AWS Services v2 v3 Problems WinsAWS Services Elastic Transcoder Massively parallel A/V transcoding engine Cheaper than most desktop transcoding solutions Repeatable jobs set up through a web form …or…
- 27. Forces Caveat Overview AWS Services v2 v3 Problems WinsAWS Services
- 28. Forces Caveat Overview AWS Services v2 v3 Problems WinsAWS Services = Serverless computing Lambda
- 29. Forces Caveat Overview AWS Services v2 v3 Problems WinsAWS Services <1.5 GB RAM <5 minutes
- 30. Forces Caveat Overview AWS Services v2 v3 Problems WinsAWS Services
- 31. Forces Caveat Overview AWS Services v2 v3 Problems WinsAWS Services ?
- 32. Forces Caveat Overview AWS Services v2 v3 Problems WinsAWS Services ?
- 33. Forces Caveat Overview AWS Services v2 v3 Problems WinsAWS Services = Pub/Sub Simple Notification Service
- 34. Forces Caveat Overview AWS Services v2 v3 Problems WinsAWS Services
- 35. Forces Caveat Overview AWS Services v2 v3 Problems WinsAWS Services v1
- 36. Forces Caveat Overview AWS Services v2 v3 Problems WinsAWS Services ! Each S3 bucket can only have one Lambda listener Track changes across multiple functions ET jobs run asynchronously, and each gets its own ID How do we know things are done?
- 37. Forces Caveat Overview AWS Services v2 v3 Problems Wins v1 v2
- 38. Forces Caveat Overview AWS Services v2 v3 Problems Wins Persistence v2
- 39. Forces Caveat Overview AWS Services v2 v3 Problems Wins Crazy scalable NoSQL document datastore Pay for reads/writes per second DynamoDB Flexible data model as we figured what we needed v2
- 40. Forces Caveat Overview AWS Services v2 v3 Problems Winsv2 Job 2 Job 1 Job 3
- 41. Forces Caveat Overview AWS Services v2 v3 Problems Winsv2 Job 2 Job 1 Job 3
- 42. Forces Caveat Overview AWS Services v2 v3 Problems Winsv2 Job 2 Job 1 Job 3 All done?
- 43. Forces Caveat Overview AWS Services v2 v3 Problems Winsv2 Job 2 Job 1 Job 3 All done?
- 44. Forces Caveat Overview AWS Services v2 v3 Problems Wins Massively scalable infrastructure API for subscribe/unsub, tracks bounces Simple Email Service Lambda functions can handle incoming + bounce msgs v2
- 45. Forces Caveat Overview AWS Services v2 v3 Problems Wins Video uploaded to S3 input bucket Lambda processes file Info about source file is stored in DynamoDB by Lambda function v2 v2 Lambda function fires off all needed Elastic Transcoder jobs Elastic Transcoder notifies SNS when each job is done Lambda processes incoming SNS message
- 46. Forces Caveat Overview AWS Services v2 v3 Problems Wins Information about job is updated in DynamoDB Lambda function moves transcoded file to S3 v2 v2 Lambda function checks to see if all related jobs are done If yes, SES message is sent to appropriate team member If yes, Lambda notifies CF-based LMS to make video available CloudFront picks up the file for global distribution
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- 48. Forces Caveat Overview AWS Services v2 v3 Problems Wins Bulk purchase savings + variable turnaround time Highly accurate even on technical jargon + ESL Caption search plugins v3 API for job processing and tracking
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- 51. Forces Caveat Overview AWS Services v2 v3 Problems Wins videoID.mp4 v2 videoID^bklaas.mp4videoID^bklaas^sameDay.mp4videoID^bklaas^sameDay^noCaptions.mp4videoID^bklaas^sameDay^noCaptions^otherbucket/otherPath.mp4
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- 53. Forces Caveat Overview AWS Services v2 v3 Problems Wins Security credential system Users, groups, permissions, roles Identity Access Management Extremely fine-grained control over access v2
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- 56. Forces Caveat Overview AWS Services v2 v3 Problems Wins ctlS3Utils: https://github.com/brianklaas/ctlS3Utils ctlCloudFrontUtils: https://github.com/brianklaas/ctlCloudFrontUtils CTL Utils Request signing and file property manipulation v3
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- 60. Forces Caveat Overview AWS Services v2 v3 Problems Winsv3 Jobs
- 61. Forces Caveat Overview AWS Services v2 v3 Problems Wins 😢 Problems Problems
- 62. Forces Caveat Overview AWS Services v2 v3 Problems Wins Security Problems
- 63. Forces Caveat Overview AWS Services v2 v3 Problems Wins Always https Problems Add the 3rd party certificate to the Java keystore Security
- 64. Forces Caveat Overview AWS Services v2 v3 Problems Wins Use custom attributes for internal validation Problems Security
- 65. Forces Caveat Overview AWS Services v2 v3 Problems Wins Build for idempotence Problems Security
- 66. Forces Caveat Overview AWS Services v2 v3 Problems Wins Network timeouts Problems
- 67. Forces Caveat Overview AWS Services v2 v3 Problems Wins Lambda function execution time limit Problems Network
- 68. Forces Caveat Overview AWS Services v2 v3 Problems Wins Store on S3, let 3rd party API grab Problems Network
- 69. Forces Caveat Overview AWS Services v2 v3 Problems Wins Retries Problems
- 70. Forces Caveat Overview AWS Services v2 v3 Problems Wins Backup Lambda or CF functions for retries Problems Retries
- 71. Forces Caveat Overview AWS Services v2 v3 Problems Wins Process Problems
- 72. Forces Caveat Overview AWS Services v2 v3 Problems Wins Debugging in Lambda is awful. Problems Process
- 73. Forces Caveat Overview AWS Services v2 v3 Problems Wins Testing Lambda functions is hard. Problems Process
- 74. Forces Caveat Overview AWS Services v2 v3 Problems Wins Everything fails. Problems Process
- 75. Forces Caveat Overview AWS Services v2 v3 Problems Wins async:waterfall Problems Process
- 76. Forces Caveat Overview AWS Services v2 v3 Problems Wins Distributed, moving pieces Problems Process
- 77. Forces Caveat Overview AWS Services v2 v3 Problems WinsWins 👍 Wins!
- 78. Forces Caveat Overview AWS Services v2 v3 Problems Wins No servers. No updating. No admin. Wins
- 79. Forces Caveat Overview AWS Services v2 v3 Problems Wins Fast! Wins
- 80. Forces Caveat Overview AWS Services v2 v3 Problems Wins Cheap! Wins
- 81. Forces Caveat Overview AWS Services v2 v3 Problems WinsWins Fast Cheap Good
- 82. Forces Caveat Overview AWS Services v2 v3 Problems Wins + AWS Services + Node.js + Microservices Wins
- 83. Forces Caveat Overview AWS Services v2 v3 Problems Wins Learn Wins
- 84. Go Do!
- 85. Questions? Brian Klaas Johns Hopkins University bklaas@jhu.edu @brian_klaas
- 86. Thank you!