Kotlin for the Cloud

Transcript

1. Kotlin for the Cloud
2. 2 | LEAN TECHNIQUES • Why Kotlin • Machine Setup • Servless API • Fargate (Docker) API • Machine Learning with AWS Serverless Agenda
3. 3 | LEAN TECHNIQUES Why Kotlin • Statically Typed Language • Runs on the JVM, which is supported by all major cloud providers. • Less boilerplate code than Java • The Spring framework supports Kotlin as a first class language. • Infrastructure as code providers support java, and therefore support Kotlin as a language for defining infrastructure. • Cloud providers either support Kotlin or Java as and SDK language. You can use the Java SDK from kotlin. • Kotlin supports co-routines (non-blocking asynchronous programming)
4. 4 | LEAN TECHNIQUES Tools • AWS CLI • IntelliJ • Java 21 • NodeJs 20 • AWS CDK
5. 5 | LEAN TECHNIQUES CDK Concepts Application Stack Stack Construct Construct Construct Construct Construct Construct Construct Construct Construct Construct Construct Construct
6. 6 | LEAN TECHNIQUES Most used commands • cdk synth - Convert CDK code to cloudformation • cdk diff - Show you what is different from what is in the account. • cdk deploy - Deploy your infrastructure to your account. CDK Commands
7. Demo 1 Kotlin Coroutines
8. 8 | LEAN TECHNIQUES Co-routines • Fire and forget • Return 1 results • Gather multiple results
9. Demo 2 Serverless API
10. Serverless API • What we are going to build: Infrastructure using AWS CDK API Gateway Lambda Application Code Lambda • Final project can be found here: https://github.com/jangolano/lambda 10 | LEAN TECHNIQUES Snap Start serializes JVM based lambdas to disk when promoting a version. This reduces code start time for java based lambdas, therefore making the API faster.
11. Demo 3 Fargate Application
12. 12 | LEAN TECHNIQUES Fargate Spring API • What we are going to build: Infrastructure using AWS CDK ECS Service ECS Task Application Load Balancer Application Code Spring Boot Application • Final project can be found here: https://github.com/jangolano/fargate-api
13. Demo 4 Machine Learning with Kotlin
14. 14 | LEAN TECHNIQUES AWS Machine Learning Services with AWS Kotlin SDK • Download the sample project here: https://github.com/ jangolano/aws-ml-services • AWS Reckognition - Object Detection • AWS Comprehend - Sentiment Analysis • AWS Transcribe - Used to transcribe audio into text
15. Resources The following resources can be used to create applications and infrastructure in Kotlin. 15 | LEAN TECHNIQUES CDK https:// docs.aws.amazon.com/ cdk/api/v2/java/ Kotlin Language https://kotlinlang.org/ Kotlin SDK for AWS https:// docs.aws.amazon.com/ sdk-for-kotlin/latest/ developer-guide/ home.html AWS Console https:// console.aws.amazon.com
16. 16 | LEAN TECHNIQUES Contact Info jangolano@leantechniques.com https://www.linkedin.com/in/joshuaangolano/
17. THANK YOU