在無伺服器運算可讓您建立和執行應用程式與服務，而無須擔心伺服器的問題。無伺服器應用程式不需要佈建、擴展和管理任何伺服器。您可以為幾乎任何應用程式類型或後端服務建立無伺服器應用程式，它可為您包辦執行和擴展高可用性應用程式所需的一切工作。 在這場線上研討中，我們將介紹如何從捕捉領域事件開始，通過AWS 無伺服器運算和應用程式相關的服務來建構基於事件驅動的應用，有關的服務包括: Amazon API Gateway、 AWS Lambda, Amazon DynamoDB, Amazon CloudWatch，以及一些領域驅動設計的概念。

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Kim Kao, Solutions Architect
23 Aug, 2018
AWS
Serverless Event Driven Design

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Sponsor

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Agenda
1.
2. AWS
3. Lambda
4.
5. SAM CLI
6. Demo

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…

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Eric Evans
“Ubiquitous Language
”
“Bounded Context
”

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Eric Evans

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©2018, AmazonWebServices, Inc. or Its Affiliates. All rights reserved.
( )

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©2018, AmazonWebServices, Inc. or Its Affiliates. All rights reserved.
vs
webserver
.package
Order UI
Order service
Inventory
service
Shipping
service
O rder UI
Inventory
service
O rder
service
Shipping
service

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©2018, AmazonWebServices, Inc. or Its Affiliates. All rights reserved.

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AWS Lambda
AWS Lambda + Amazon API Gateway
•
•
•

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…

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AWS Lambda ?
• Linux
• Process/Networking
•
•
•
•

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Node.js
Python
Java
C#
Go

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Handler() Context
ID, ID
public String handleRequest(Book book, Context context) {
saveBook(book);
return book.getName() + " saved!";
}
Lambda

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AWS Lambda

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Lambda
(push) (event) (Poll)
Amazon
API Gateway
AWSLambda
function
Amazon
DynamoDBAmazon
SNS
/order
AWSLambda
function
Amazon
S3
reqs
Amazon
Kinesis
changes
AWSLambda
service
function

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AWS Lambda
• Static
websites
• Complex web
apps
• Packages for
Flask and
Express
• Real time
• MapReduce
• Batch
• Powering
chatbot logic
• Apps &
services
• Mobile
• IoT
</></>
Amazon
Alexa
• Powering
voice-enabled
apps
• Alexa Skills
Kit
IT
• Policy engines
• Extending
AWS services
• Infrastructure
management

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*
API
API
?

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• API
• API Key
• SigV4 API
• API
• Lambda
Amazon API Gateway

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API Gateway
• API
• Amazon CloudFront DDoS
• iOS, Android, and JavaScript
SDK
• Swagger API
•

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API Gateway
Internet
Mobile Apps
Websites
Services
AWS Lambda
functions
AWS
API Gateway
Cache
Endpoints on
Amazon EC2
Amazon
CloudWatch
Monitoring
Amazon
CloudFront
YOUR VPC
Endpoints in
Your VPC
Regional API Endpoints
All publicly
accessible endpoints
AWS Lambda
functions

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Lambda
AWS Lambda
Amazon DynamoDB
Amazon SNS
Amazon API Gateway
Amazon SQS
Amazon Kinesis
THE COMPLETE PLATFORM
Amazon S3
AWS Step Functions

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Seat
occupied
Menu offered
Ordered 2 cups
of Americano
Paid
Order
received
Coffee
made up
Customers
Left
Table
Cleaned

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•
•
•
•
ACTORS

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/

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Event Bus
(pub/sub)
Put
event
Event
Event
CloudWatch Event

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HTTP/HTTPS/TCP traffic
Remote Procedure Call
Publish Event
External System
Email
Persistence

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AdapterAmazon
DynamoDB
Adapter
Amazon API
Gateway
Amazon
CloudWatch
Event
Adapter
Adapter AWS
Lambda

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• Isolated Domain Model
• Domain – Stable
• Interface – Hug Changes
• Dependency Control
• Vendor Lock issue ( J )

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Client
Order Handler
Order
Domain
Order API
Order Table
Order Created Event
Barista
Handler
Make Up
Domain
Order Created Event
Accept
Created Order

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• Cucumber-Java
• Junit
• AWS-SDK-Java

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SAM
Integrate with API Gateway
Exposed Endpoint as Communication Adapter
Lambda function as Facade
Restricted Policies

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AWS SAM CLI AWS SAM Local
2018-05-08
Serverless Apps
Lambda Proxy API Gateway
docker-lambda
Lambda
https://github.com/awslabs/aws-sam-cli

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SAM CLI

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package

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AmazonS3 Amazon
DynamoDB
Amazon
Kinesis
AWS
CloudFormation
AWSCloudTrail Amazon
CloudWatch
Amazon
Cognito
AmazonSNSAmazon
SES
Cronevents
DATA STORES ENDPOINTS
CONFIGURATION REPOSITORIES EVENT/MESSAGE SERVICES
AWS
CodeCommit
Amazon
API Gateway
Amazon
Alexa
AWSIoT AWSStep
Functions

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Demo

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Behind the scenes

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Thank you!

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Interested in Event Storming ?
https://bit.ly/2kCZSau
AWS: YikaiKao@
Line : YikaiKao
WeChat : YikaiKao
Twitter : @YikaiKao
GitHub Repos

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AWS Facebook Taiwan Page

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Remember to complete
your evaluations!
8,
Remember to complete
your evaluations!