My presentation about Serverless Architectures in JavaDay Lviv, June 2016. It covers AWS Lambda and related AWS Services. LiveDemo have got terraform and apex.

1. SERVERLESS ARCHITECTURES
JAVA DAY LVIV 2016

2. ~ WHOAMI
▸ Full stack developer ~ 15years
▸ Cloud Architect
▸ DevOps evangelist
▸ Innovation Center of Accenture Cloud
Platform
▸ Speaker
▸ Marathon runner
ANTONS KRANGA
@acankr

3. SERVERLESS MOTIVATION
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4. DON’T WORRY, THERE ARE SERVERS
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5. BUT THERE ARE NO SERVERS THAT
WE MANAGE
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6. DEVS WANT TO GO NOOPS
@acankrhttp://martinfowler.com/bliki/DevOpsCulture.html

7. DEVS WANT TO GO NODEVOPS
@acankrhttp://martinfowler.com/bliki/DevOpsCulture.html

8. INCREASE PACE OF DEVELOPMENT
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9. @acankr
SIMPLIFY COMPLIANCE AUDIT

10. STATIC WEBSITE
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11. WE USING SERVERLESS FOR AGES
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12. @acankr
- Highly Available Serverless Storage
- Scaleable and Elastic
- Replicated across 2 availability zones
- Supports HTTP requestsS3

13. @acankr
Static HTML
CSS/Media
Rich JavaScript Apps
GET
http
S3 StorageCloudFront
USER

14. @acankr
Static HTML
CSS/Media
Rich JavaScript Apps
R53 Domain
GET
http
example.com
S3 StorageCloudFront
USER

15. @acankr
Static HTML
CSS/Media
Rich JavaScript Apps
COST MODEL: $0.03 GiB per Month
S3 HIGHLY AVAILABLE STORAGE
- Covered by AWS S3 SLA
- Durability: 99.999999999%
- Availability: 99.99%
SLOW WRITE OPERATIONS
R53 Domain
GET
http
example.com
S3 StorageCloudFront
USER

16. DYNAMIC WEBSITE
@acankr

17. @acankr
GET
Static HTML
CSS/Media
Rich JavaScript Apps
S3 StorageCloudFront
GET
POST
PUT
DELETE
Dynamic Data
Data from Database
Data from External Service
dataAPI Gateway Lambda
ajax
http
event
USER

18. LAMBDA
@acankr
- AWS Computing Service
- Designed to reflect async Actor Model
- Resilient and Scaleable
- 512 RAM
- Supports Runtimes
- Java
- Python
- NodeJS
- Go (implicitly)
- Max Timeout 5 mins
- Pricing:
- 0.20$ per million requests.
- Billable 100 milliseconds

19. @acankr
Lambda
API Gateway
EVENT SOURCE
Kinesis Data Streams
SNS Queue or Topic data
Lambda
other data
CONSUMER OR EVENT
CRON Job

20. @acankr
API Gateway
Lambda
+
- API Management Tool
- Authorization + Custom Authorizer
- Defines: Environment Variables for Lambda
- Can be defined with Swagger and imported
- Code Supports Versioning
- Integrated with CloudWatch
- Lambda Containers are Cached for 5 minutes
- Can be deployed with “apex.run” tool
- User can write files in /tmp

21. @acankr
BUILD.GRADLE
apply plugin: 'java'
version = '1.0.0'
mainClassName='Main'
jar {
archiveName = 'apex.jar'
}
repositories {
mavenCentral()
}
dependencies {
compile (
'com.amazonaws:aws-lambda-java-core:1.1.0',
'com.amazonaws:aws-lambda-java-events:1.1.0'
)
}
SHELL
$ ./gradlew clean build
BUILD SUCCESSFUL
Total time: 9.134 secs

22. @acankr
MAIN.JAVA
public class Main implements RequestHandler<String, String> {
@Override
public String handleRequest(String input, Context context) {
context.getLogger().log("My input is: " + input);
return "Hello: " + input
}
}
FUNCTION.JSON
{
"runtime": "java8",
"role": "arn:aws:iam::776022106184:role/apex_lambda_function",
"handler": "Main::handleRequest",
"memory": 512,
"timeout": 32
}
SHELL
$ apex deploy
• function created

23. STATEFUL LAMBDA
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24. @acankr
GET
POST
PUT
DELETE
dataAPI Gateway Lambda
ajax event
USER
DB_URL
DB_PORT
DB_USER
Variables
VPC

25. @acankr
GET
POST
PUT
DELETE
dataAPI Gateway Lambda
ajax event
USER
DB_URL
DB_PORT
DB_USER
Variables
VPC
Authorizer
Lambda
Authorizer

26. HIPSTER WEB PORTAL
@acankr

27. GOOD PORTAL NEEDS CMS
@acankr

28. "...USE GIT AS THE BASIS FOR A LIGHTWEIGHT CMS, WITH TEXT-BASED EDITING
FORMATS. GIT HAS POWERFUL FEATURES FOR TRACKING CHANGES AND
EXPLORING ALTERNATIVES, WITH A DISTRIBUTED STORAGE MODEL THAT IS FAST
IN USE AND TOLERANT OF NETWORKING ISSUES."
ThoughtWorks Technology Radar
https://www.thoughtworks.com/radar/techniques/git-based-cms-git-for-non-code
assess since May 2015
BEST CMS
@acankr

29. CODECOMMIT
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- Git Repository Service
- Backed by S3 storage
- Price: $1 per user
- Only: us-west-1 region

30. CODECOMMIT
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Lambda
+
- Lambda doesn’t have GIT client.
- You can “statically link” git libraries with
git2go library (libgit2)
- To read SSH key file with Lambda it must be stored
in “/tmp” directory
- SSH private key must have 600 credentials
- SSH private key must be owned by user “sandbox”

31. @acankr
USER
GET
Static HTML
CSS/Media
Rich JavaScript Apps
S3 StorageCloudFront
GET
POST
PUT
DELETE
Dynamic Data
Data from Database
Data from External Service
dataAPI Gateway Lambda
ajax
http
event
Lambda
push
EDITOR
event
document commit
PUT
Checkout document
Render or post-process
Publish
CodeCommit

32. SERVERLESS CONTINUOUS
DEPLOYMENT
@acankr

33. @acankr
Compilation
Lambda
push
DEV
event
document commit
Checkout Compile
CodeCommit
PUT
S3
GET
Checkout Compile
Testing
Lambda
if needed
long running tests
VMs
CREATE
Deployment
Lambda
Lambda
SNS
ChatOps

34. ALTERNATIVES
@acankr

35. @acankr
- SERVICE FABRIC
- Runtimes:
- ASP .NET (1Core)
- NodeJS
- etc
- Deployment:
- REST API
- PowerShell
- GOOGLE CLOUD FUNCTIONS (ALPHA)
- Runtimes:
- NodeJS (only)
- Deployment:
- gcloud

36. TAKEAWAYS
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37. PAY FOR ONLY WHAT YOU USE
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38. TAKEAWAYS
READING
▸ Book: AWS Lambda in Action
▸ MEAP begin in 2016 February
▸ Publication: March 2017
▸ Author: Danilo Poccia
▸ ISBN: 9781617293719
https://www.manning.com/books/aws-lambda-in-action
@acankr

39. THANK YOU!
@acankr
http://www.slideshare.net/akranga/javaday-lviv-serverless-archtiectures
https://github.com/akranga/chuck-lambda
Self Link:
Demo: