Building Serverless Applications in Ruby with AWS Lambda

An overview of the benefits of AWS Lambda, and a survey of open source tools that can help Ruby developers create serverless applications using AWS Lambda.

Transcript

1. BUILDING SERVERLESS
   APPLICATIONS IN RUBY
   WITH AWS LAMBDA
   

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2. WHO AM I?
   ▸ Currently: Building Serverless
   Open Source Tooling at AWS
   ▸ Formerly: AWS SDK for Ruby Team
   ▸ Author of Ruby runtime for AWS
   Lambda
   ▸ Twitter: @alexwwood
   ▸ Please do tweet your comments
   and questions about this talk!
   

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3. AGENDA
   ▸ Overview of AWS Lambda & Ecosystem
   ▸ Review of Open Source Tools
   ▸ AWS SAM CLI
   ▸ AWS SDK for Ruby
   ▸ aws-record
   ▸ Demo
   ▸ Web and Event-Driven Application Hybrid
   

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4. AWS LAMBDA & ECOSYSTEM
   

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5. SERVERLESS IS DEAD.
   Chris Munns, AWS Principal Developer Advocate
   CAUSE OF DEATH: EXCESSIVE BUZZWORD USAGE
   

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6. WHAT SERVERLESS MEANS
   

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7. WHAT SERVERLESS MEANS
   No Servers to Provision or Manage
   

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8. WHAT SERVERLESS MEANS
   Scales With Usage
   

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9. WHAT SERVERLESS MEANS
   Pay For Value
   

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10. WHAT SERVERLESS MEANS
    Availability and Fault Tolerance Built In
    

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11. PRODUCTION APP DEVELOPMENT INVOLVES MANY THINGS
    ▸ Code & Tests
    ▸ User Authentication
    ▸ Monitoring
    ▸ Load Balancing
    ▸ Auto Scaling
    ▸ Handling Server/Container Failures
    ▸ Security Isolation
    ▸ Operating System Management
    

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12. PRODUCTION APP DEVELOPMENT INVOLVES MANY THINGS
    ▸ Code & Tests
    ▸ User Authentication
    ▸ Monitoring
    ▸ Load Balancing
    ▸ Auto Scaling
    ▸ Handling Server/Container Failures
    ▸ Security Isolation
    ▸ Operating System Management
    

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13. AWS LAMBDA HANDLES MANY THINGS
    ▸ Code & Tests
    ▸ User Authentication
    ▸ Monitoring
    ▸ Load Balancing
    ▸ Auto Scaling
    ▸ Handling Server/Container Failures
    ▸ Security Isolation
    ▸ Operating System Management
    AWS Lambda Handles These
    AWS Lambda Integrates
    With Solutions For These
    

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14. AWS LAMBDA WORKS FOR MANY THINGS
    ▸ Web Applications
    ▸ Backend Services
    ▸ Data Processing
    ▸ Chatbots
    ▸ Amazon Alexa
    ▸ IT Automation
    

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15. OPEN SOURCE TOOLS
    

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16. THIS IS ONE OF THE THINGS MY NEW TEAM OWNS
    AWS SAM CLI
    ▸ Generate, Build, and Deploy Serverless Applications
    ▸ Develop and Test AWS Lambda Functions Locally
    ▸ Local API Gateway w/ Hot Reloading
    ▸ https://github.com/awslabs/aws-sam-cli
    

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17. NOW IN VERSION 3!
    AWS SDK FOR RUBY
    ▸ Supports >= 174 AWS services.
    ▸ Built-in support for pagination, waiters for state changes.
    ▸ Helpful abstractions for Amazon S3, Amazon SQS, and more.
    ▸ Modularized with statically generated code for performance.
    ▸ Removes 'autoload' for thread safety.
    ▸ https://github.com/aws/aws-sdk-ruby
    

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18. WATCH THE "DAT401" SESSION FROM AWS RE:INVENT 2018, YOU WON'T REGRET IT
    AWS-RECORD GEM
    ▸ Data mapping abstraction library for Amazon DynamoDB.
    ▸ Similar patterns to ActiveRecord APIs.
    ▸ Full support for collection types (Lists, Maps, Sets).
    ▸ Declarative table configuration and migrations.
    ▸ https://github.com/aws/aws-sdk-ruby-record
    

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19. LIVE DEMO
    IF YOU JUST CAME FOR THE DOGS, THEN
    THIS IS WHAT YOU CAME FOR!
    

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20. THE IMPORTANT THING IS THAT IT HAS PUPPIES. EVERYTHING ELSE IS A BONUS!
    DOG RATING APP DESIGN
    ObjectCreated
    API Gateway Sinatra App
    Is it a dog?
    Write to Index if Dog
    DynamoDB Table
    Upload via Presigned Post
    ‣ Show Dogs
    ‣ Upload Dog
    ‣ Rate Dog
    

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21. THE IMPORTANT THING IS THAT IT HAS PUPPIES. EVERYTHING ELSE IS A BONUS!
    WEB APPLICATION COMPONENTS
    API Gateway Sinatra App DynamoDB Table
    Upload via Presigned Post
    ‣ Show Dogs
    ‣ Upload Dog
    ‣ Rate Dog
    

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22. THE IMPORTANT THING IS THAT IT HAS PUPPIES. EVERYTHING ELSE IS A BONUS!
    EVENT-DRIVEN COMPONENTS
    ObjectCreated
    Is it a dog?
    Write to Index if Dog
    DynamoDB Table
    

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23. THE IMPORTANT THING IS THAT IT HAS PUPPIES. EVERYTHING ELSE IS A BONUS!
    EVENT-DRIVEN COMPONENTS
    ObjectDeleted
    DynamoDB Table
    Delete Item from Table
    

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24. CAN YOU JUST SHOW ME THE
    DEMO, PLEASE?
    - Somebody (Probably)
    

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25. CONCLUSION
    

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26. SERVERLESS BENEFITS
    ▸ AWS Lambda handles many elasticity, scalability, high-
    availability, security and fault-tolerance problems for you.
    ▸ Focus more on code, ship faster.
    

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27. 4 OUT OF 5 DENTISTS RECOMMEND CHECKING THESE TALKS OUT
    RELATED TALKS
    ▸ ATX Serverless Days 2019 - Serverless is Dead
    ▸ AWS re:Invent 2018 ARC306 - Serverless Architectural
    Patterns
    ▸ AWS re:Invent 2018 SRV305 - Inside AWS: Technology
    Choices for Modern Applications
    ▸ AWS re:Invent 2018 DAT401 - Advanced Design Patterns
    for Amazon DynamoDB
    

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28. THANK YOU!
    ▸ Find our work on GitHub:
    ▸ https://github.com/aws/aws-sdk-ruby
    ▸ https://github.com/aws/aws-sdk-ruby-record
    ▸ https://github.com/awslabs/aws-sam-cli
    ▸ Find me on the internets:
    ▸ Twitter: @alexwwood
    ▸ Web: https://alexwood.codes
    

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