Serverless Microservices

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with @DavidWells Microservices Building

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I'm @DavidWells Software Developer @

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AWS Lambda

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How did we get here 1. Build and maintain your own machines 2. Buy space in someone else's server farm 3. Run virtual machines in the cloud 4. Run containers in the cloud 5. Serverless Compute

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Serverless?

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WTF!!!!! Serverless?

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Serverless Auto-scaling focus on your core application logic not infrastructure Event Driven Architectures Never pay for idle Code runs as stateless functions Leverage third party services

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after free tier $0.20 per 1 million requests ($0.0000002 per request) First 1 million requests (400,000 GB-seconds) free per month

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• Nordstrom • Coca-Cola • Autodesk • Angie’s List • Vevo • Booz Allen Hamilton • NY Life Insurance • Australian Government • LendingTree • Amazon • Vice • Accenture • And more Enterprise Users Serverless State of the union re:Invent 2016 youtube.com/watch?v=AcGv3qUrRC4

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Finra Serverless State of the union re:Invent 2016 youtube.com/watch?v=AcGv3qUrRC4

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serverless.com/blog/dept-of-defense-doc-bot US Department of Defense

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You can manually do this in UI...

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Your code + + = infinitely scalable, pay-per-execution microservices Framework (CLI)

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Project Structure code: handler.js conﬁg: serverless.yml Framework

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serverless.yml conﬁg ﬁle

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Where to run serverless.yml conﬁg ﬁle When to run What to run

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Where to run What to run When to run serverless.yml conﬁg ﬁle

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named export saveUser function is referenced in serverless.yml handler.js ﬁle

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Your code runs in response to events - a POST request is sent to /createUser - a new item is added to the database - a scheduled cron triggers - a new image is added to an s3 bucket - an infrastructure event matching a rule is found - a SAAS webhook is ﬁred - a link in an email is clicked - ... etc

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use cases

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• DevOps/Infrastructure Automation • Auditing resources for security • Bots (Chat/Voice) • Alexa skills • IoT events • Infrastructure events • S3 - new ﬁles, updated ﬁles etc • DynamoDB - new items in DB • ... • Web + Mobile backend APIs • Form processing • Image processing • Web scraping / testing • Running binaries • Serving HTML / dynamic binaries • Webhook listeners • Cron jobs github.com/serverless/examples Use Cases

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• Amazon API Gateway • Amazon S3 • Amazon DynamoDB • Amazon Kinesis Streams • Amazon Simple Notiﬁcation Service • Amazon Simple Email Service • Amazon Cognito bit.ly/infra-events • AWS CloudFormation • Amazon CloudWatch Logs • Amazon CloudWatch Events • AWS CodeCommit • Scheduled Events • AWS Conﬁg • Amazon Echo • Amazon Lex Infrastructure Events

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EVERYTHING*

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Patterns

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Serverless Backend API

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UI REST Backend API serverless.com/framework/status

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REST Backend API (expanded)

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microapps.com/blog/serverless-framework REST Backend API (production)

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GraphQL Backend API

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Serverless Fan Out

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Fan out pattern

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Effortlessly Scaling Data Science with PyWren by Eric Jonas bit.ly/2skOZj9

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bit.ly/2reLdD5 AWS Lambda Invasion in Big Data

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Event driven serverless architectures

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github.com/Nordstrom/hello-retail

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Highly recommend watching bit.ly/hello-retail-video

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Highly recommend watching bit.ly/hello-retail-video

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bit.ly/i-heart-logs Real world example uniﬁed log Event "Job Page Viewed"

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bit.ly/sls-design-patterns See more serverless design patterns

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Challenges

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Service Discovery

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Secret Management

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Logging

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Deployments

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Tracing

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Cold starts

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github.com/serverless/examples

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Finding More Use Cases and Examples

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  Thanks for listening! Questions? Tweet @DavidWells