Create a Website and API with AWS Lambda

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A sample of a serverless stack using AWS presented a the Columbia AWS Meetup on October 20th, 2010. Find more details, a video presentation, and the resources used in this presentation @ https://www.thorntech.com/2016/10/serverless-website-aws-lambda/

Technology

CREATE A WEBSITE AND API WITH AWS
LAMBDA
A starting guide on the serverless stack

WHY SERVERLESS
• No server infrastructure management
• Scaling is simple and precise, only pay for what you
use
• Decoupled architecture keeps you agile

WHAT ISTHE SERVERLESS
STACK
• Route53 provides DNS
• CloudFront provides CDN/
HTTPS
• S3 Hosts Static Web Content
• DynamoDB or RDS provides
database
• API Gateway provides http(s)
endpoints
• Lambda executes business logic

VOTING APP ARCHITECTURE
Created with https://cloudcraft.co/

STEP 1: SET UP DYNAMODB
• CreateVotesTable in
DynamoDB

STEP 2: SET UP LAMBDA
FUNCTION 1,THEVOTE CASTER
• Create a new Lambda with
microservice-http-endpoint
blueprint
• Modify code to update
Votes table

STEP 3: CONFIGURE API
GATEWAY
• The endpoint provided by the
Lambda blueprint is broken
• Delete the given endpoint and
create one from scratch
• Create Body MappingTemplate
to transform x-www-form-url-
encoded request
• Could add security layer with
Cognito User Pools and logging
to CloudWatch

STEP 4: SET UP S3 BUCKET
• Enable Static Website
Hosting
• Set bucket policy to enable
public access
• Upload html ﬁle

STEP 5: LAMBDA FUNCTION 2,
THEVOTETALLY READER
• Trigger from DynamoDB
table updates
• Write data.json ﬁle in S3

FRAMEWORKS
• Serverless: https://serverless.com/
• apex: http://apex.run/
• chalice (python): https://github.com/awslabs/chalice
• aws-serverless-express: https://github.com/awslabs/
aws-serverless-express

THANKYOU!
QUESTIONS?
Dan Rusk
danrusk@thorntech.com

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Create a Website and API with AWS Lambda

1. CREATE A WEBSITE AND API WITH AWS LAMBDA A starting guide on the serverless stack

2. WHY SERVERLESS • No server infrastructure management • Scaling is simple and precise, only pay for what you use • Decoupled architecture keeps you agile

3. WHAT ISTHE SERVERLESS STACK • Route53 provides DNS • CloudFront provides CDN/ HTTPS • S3 Hosts Static Web Content • DynamoDB or RDS provides database • API Gateway provides http(s) endpoints • Lambda executes business logic

4. VOTING APP ARCHITECTURE Created with https://cloudcraft.co/

5. STEP 1: SET UP DYNAMODB • CreateVotesTable in DynamoDB

6. STEP 2: SET UP LAMBDA FUNCTION 1,THEVOTE CASTER • Create a new Lambda with microservice-http-endpoint blueprint • Modify code to update Votes table

7. STEP 3: CONFIGURE API GATEWAY • The endpoint provided by the Lambda blueprint is broken • Delete the given endpoint and create one from scratch • Create Body MappingTemplate to transform x-www-form-url- encoded request • Could add security layer with Cognito User Pools and logging to CloudWatch

8. STEP 4: SET UP S3 BUCKET • Enable Static Website Hosting • Set bucket policy to enable public access • Upload html ﬁle

9. STEP 5: LAMBDA FUNCTION 2, THEVOTETALLY READER • Trigger from DynamoDB table updates • Write data.json ﬁle in S3

10. FRAMEWORKS • Serverless: https://serverless.com/ • apex: http://apex.run/ • chalice (python): https://github.com/awslabs/chalice • aws-serverless-express: https://github.com/awslabs/ aws-serverless-express

11. THANKYOU! QUESTIONS? Dan Rusk danrusk@thorntech.com

Create a Website and API with AWS Lambda

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