accessible video anywhere with coldfusion an aws
TRANSCRIPT
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ColdFusion Summit 2016
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Accessible Video Anywhere with ColdFusion and AWSBrian Klaas Johns Hopkins University [email protected] @brian_klaas
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Section 504 Section 508
Title III
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Accessible Video Anywhere with ColdFusion and AWSBrian Klaas Johns Hopkins University [email protected] @brian_klaas
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Architecture !code
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So…
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Simple Storage Service
S3
AWS Services
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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” />
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Simple Storage Service
S3
AWS Services
CloudFront
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Forces Caveat Overview AWS Services v2 v3 Problems WinsAWS Services
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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
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We built nothing.
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Elastic Transcoder
Massively parallel A/V transcoding engine
Cheaper than most desktop transcoding solutions
Repeatable jobs set up through a web form …or…
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= Serverless computing
Lambda
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<1.5 GB RAM <5 minutes
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?
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?
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= Pub/Sub
Simple Notification Service
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v1
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!
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?
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v1
v2
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Persistence
v2
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Crazy scalable NoSQL document datastore
Pay for reads/writes per second
DynamoDB
Flexible data model as we figured what we needed
v2
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Job 2
Job 1
Job 3
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Job 2
Job 1
Job 3
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Job 2
Job 1
Job 3
All done?
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Job 2
Job 1
Job 3
All done?
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Massively scalable infrastructure
API for subscribe/unsub, tracks bounces
Simple Email Service
Lambda functions can handle incoming + bounce msgs
v2
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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
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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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Forces Caveat Overview AWS Services v2 v3 Problems WinsOverview
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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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!
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videoID.mp4
v2
videoID^bklaas.mp4videoID^bklaas^sameDay.mp4videoID^bklaas^sameDay^noCaptions.mp4videoID^bklaas^sameDay^noCaptions^otherbucket/otherPath.mp4
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!
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Security credential system
Users, groups, permissions, roles
Identity Access Management
Extremely fine-grained control over access
v2
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!
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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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v3
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v3
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Jobs
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😢 Problems
Problems
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Security
Problems
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Always https
Problems
Add the 3rd party certificate to the Java keystore
Security
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Use custom attributes for internal validation
Problems
Security
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Build for idempotence
Problems
Security
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Network timeouts
Problems
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Lambda function execution time limit
Problems
Network
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Store on S3, let 3rd party API grab
Problems
Network
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Retries
Problems
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Backup Lambda or CF functions for retries
Problems
Retries
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Process
Problems
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Debugging in Lambda is awful.
Problems
Process
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Testing Lambda functions is hard.
Problems
Process
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Everything fails.
Problems
Process
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async:waterfall
Problems
Process
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Distributed, moving pieces
Problems
Process
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👍 Wins!
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No servers. No updating. No admin.
Wins
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Fast!
Wins
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Cheap!
Wins
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Fast Cheap
Good
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+ AWS Services + Node.js + Microservices
Wins
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Learn
Wins
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Go Do!
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Thankyou!