Effectively running Java applications on AWS - Deep Dive at Devoxx Belgium 2023

EFFECTIVELY RUNNING JAVA APPLICATIONS ON AWS – DEEP DIVE ©
2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. © 2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Effectively running Java applications on AWS Maximilian Schellhorn Senior Solutions Architect Amazon Web Services D E E P D I V E Dennis Kieselhorst Principal Solutions Architect Amazon Web Services

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. What to expect in the next hours… • Introduction Java on AWS ▪ Motivation – why Java matters for us ▪ OpenJDK versions and Amazon Corretto ▪ How to run Java on AWS? • How to move a Java application to the Cloud? ▪ Demo: Running a (containerized) Java workload on AWS ▪ Common Migration and Modernization scenarios • Developing modern, cloud-native Java applications on AWS ▪ Serverless with AWS Lambda ▪ Developer Tooling ▪ Demo: Building a Serverless Java Function on AWS Lambda

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Evolution of compute over the last years • Restricted & ephemeral environments • Scaling horizontally • Start up-time and resource utilization became important • Need to decrease latency and memory consumption • Portability became less relevant • Abstraction via Containers

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Java is adapting - several new projects to foster innovation • Broad ecosystem (libraries, tools and resources) & Developer experience • Over the past years companies invested in these technologies • New feature development: GraalVM native images, Project Leyden, CRaC (Coordinated Restore at Checkpoint), Accelerated Java release cycle • improved Garbage Collection (Shenandoah GC) and memory reduction via header size reduction (project Lilliput)

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. What is Amazon Corretto? • Downstream distribution of OpenJDK • Quarterly security releases • No-cost long-term releases – JDK 8, JDK 11, JDK 17, JDK 21 • Feature release train (JDK 15, JDK 16, JDK 18, JDK 19, JDK 20 …) • Drop-in OpenJDK replacement • certified using the Java Technical Compatibility Kit (TCK) to ensure it meets the Java SE standard • is available on Linux, Windows, and macOS

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. The history of Amazon Corretto • Created in late 2016 for Amazon internal use, released internally in 2017 • Enabled regular release of security patches to production fast and without surprises from breaking changes • With adoption, customers started asking for improvements ▪ Optimized performance (speed, memory utilization, response time) ▪ Lingering bugs in the JVM or the libraries • Decision to distribute Corretto ▪ In 2018 AWS customers started asking us to release our binaries ▪ The end of free updates for Oracle JDK 8 was scheduled for January 2019

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Why should you upgrade? • JDK 11 (or older) is no longer being invested in • Many libraries and JVM fixes released after JDK8 • What should you do? Explore upgrading to JDK 17 or 21 • The performance improvements alone in 17 are worth the effort • It is common to see large (10–50%) improvements • The work to upgrade commonly takes from several days to two weeks.

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. New Relic’s 2023 State of the Java Ecosystem Report • Adoption of Java 17, a recent Long Term Support (LTS) version of Java, has skyrocketed, growing 430% in the past year • Amazon Corretto is now the most-used Java Development Kit (JDK), with a 31% share of Java instances that are using New Relic. • 70% of Java applications reporting to New Relic do so from a container. https://newrelic.com/resources/report/2023-state-of-the-java-ecosystem

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. OpenJDK versions and contributions • We will support JDK 8 until May, 2026 and JDK 11 until Sept, 2027 • Non-LTS versions should be upgraded with 30 days of the next release 2018 2019 2020 2021 JDK17 JDK16 JDK15 JDK14 JDK13 JDK12 JDK11 JDK10 JDK9 JDK8 JDK18 2022 2023 JDK19 JDK20 JDK21

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. © 2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Java at AWS: Lessons Learned from Upgrading and Modernizing a Massive JVM Codebase Wednesday from 15:10 - 16:00 in Room 3

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Our sample application today AWS Cloud Unicorn Store Amazon EventBridge Publish Event UNICORN_CREATED Virtual private cloud (VPC) Amazon Relational Database (RDS) for PostgreSQL Private subnet Public subnet Load Balancer Store Unicorn Users POST PUT GET DELETE /unicorns

AWS Global Infrastructure Regions & Availability Zones N A M
E R I C A Available Region Announced # Availability Zone A S I A P A C I F I C A U S T R A L I A & N E W Z E A L A N D S A M E R I C A São Paulo 3 E U R O P E Frankfurt Ireland London Milan Paris Spain 3 3 3 3 3 3 Stockholm Zurich 3 3 A F R I C A Cape Town 3 M I D D L E E A S T Bahrain Tel Aviv UAE 3 3 3 Canada Central GovCloud US-East GovCloud US-West Northern California Northern Virginia Ohio 3 3 3 3 6 3 Oregon Canada West 4 *Beijing *Ningxia Hong Kong Hyderabad Jakarta Mumbai 3 3 3 3 3 3 Osaka Seoul Singapore Tokyo Malaysia Thailand 3 4 3 4 Melbourne Sydney Auckland 3 3 EFFECTIVELY RUNNING JAVA APPLICATIONS ON AWS – DEEP DIVE

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Amazon Elastic Compute Cloud (Amazon EC2) Virtual servers in the cloud Physical servers in AWS global regions Guest 1 Guest 2 Guest n Hypervisor Host server 650+ EC2 instances

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Start with a source image Customize software and configurations Secure image with AWS-provided or custom hardening templates Test image with AWS provided or custom tests Distribute “golden” image to selected AWS Regions Repeat when updates are pending Build an EC2 Image

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Typical application architecture Multiple copies for scale and redundancy Load Balancer Autoscaling OS Language Runtime App VM Build Deploy CI/CD

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. AWS Shared Responsibility Model SOFTWARE COMPUTE STORAGE DATABASE NETWORKING HARDWARE/AWS GLOBAL INFRASTRUCTURE REGIONS AVAILABILITY ZONES EDGE LOCATIONS AWS RESPONSIBILITY FOR SECURITY ‘OF’ THE CLOUD OPERATING SYSTEM, NETWORK & FIREWALL CONFIGURATION PLATFORM, APPLICATIONS, IDENTITY & ACCESS MANAGEMENT CUSTOMER DATA NETWORKING TRAFFIC PROTECTION (ENCRYPTION, INTEGRITY, IDENTITY) SERVER-SIDE ENCRYPTION (FILE SYSTEM AND/OR DATA) CLIENT-SIDE DATA ENCRYPTION & DATA INTEGRITY AUTHENTICATION CUSTOMER RESPONSIBILITY FOR SECURITY ‘IN’ THE CLOUD

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Shared responsibility on Amazon EC2 (released 2006) Physical Server(s) Hypervisor EC2 Instances OS Language Runtime App Autoscaling Build Deploy CI/CD AWS responsibility Customer responsibility Load Balancer $ $ Pay for provisioned resources

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Containers became popular Physical Server(s) Hypervisor EC2 Instance AWS responsibility Customer responsibility App Language Runtime OS Containers Container Orchestrator Container Orchestration Agent App Language Runtime

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Shared responsibility on Amazon Elastic Container Service (released 2015) Physical Server(s) Hypervisor EC2 Instance Autoscaling AWS responsibility Customer responsibility OS Container Orchestrator Container Orchestrator Load Balancer Container Orchestration Agent Build Deploy CI/CD ECS Containers App Language Runtime App Language Runtime $ $ Pay for provisioned resources

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Shared responsibility on AWS Fargate (released 2017) Physical Server(s) Hypervisor EC2 Instance Autoscaling AWS responsibility Customer responsibility OS Container Orchestrator Container Orchestration Agent OS Container Orchestration Agent EC2 Instance(s) Load Balancer Build Deploy CI/CD Containers App Language Runtime App Language Runtime $ Pay for provisioned resources at the container level $

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Shared responsibility on AWS App Runner (released 2021) Physical Server(s) Hypervisor Autoscaling AWS responsibility Customer responsibility OS Container Orchestrator Container Orchestration Agent OS Container Orchestration Agent Build Deploy CI/CD Autoscaling Build Deploy CI/CD Load Balancer Load Balancer EC2 Instance(s) Containers App Language Runtime App Language Runtime Containers Language Runtime Language Runtime Pay only during request processing $

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Web applications API servers managed runtime Java Multi-concurrent Stateless AWS App Runner - fully managed service for web applications

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. App Runner: Fully managed service for web applications AWS Fargate Amazon ECS Elastic Load Balancing AWS Auto Scaling AWS CodeBuild Web application Backend server

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Our sample application on App Runner AWS Cloud Unicorn Store on AWS App Runner Amazon EventBridge Publish Event UNICORN_CREATED Virtual private cloud (VPC) Amazon Relational Database (RDS) for PostgreSQL Private subnet Store Unicorn Users POST PUT GET DELETE /unicorns Amazon ECR

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Services for running Java applications beyond EC2 AWS Lambda Serverless AWS Fargate Container orchestration Amazon Elastic Kubernetes Service (EKS) Amazon Elastic Container Service (ECS) Red Hat OpenShift Service on AWS (ROSA) Opinionated deployment AWS App Runner AWS Elastic Beanstalk AWS Batch AWS IoT Greengrass AWS Amplify Amazon Lightsail

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. containers at scale Reduce decisions Reduce time build traditional applications operations minimum Amazon ECS delivers powerful simplicity

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Our sample application on ECS AWS Cloud Unicorn Store Container Amazon EventBridge Publish Event UNICORN_CREATED Virtual private cloud (VPC) Amazon Relational Database (RDS) for PostgreSQL Private subnet Public subnet Load Balancer Store Unicorn Users POST PUT GET DELETE /unicorns Amazon ECR Amazon ECS AWS Fargate

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. agility efficiency AWS optimized Kubernetes Secure Kubernetes deployments Build community around Kubernetes Amazon EKS delivers open flexibility

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Integrated Kubernetes based application platform with built-in CI/CD, monitoring, and developer tools. existing skills Accelerate - Turn-key Platform

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. AWS Well-Architected Framework Container Build Lens https://docs.aws.amazon.com/wellarchitected/latest/container-build-lens/container-build-lens.html We provide cloud-agnostic questions and best practies on how to build and manage containers and container images.

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. 1 2 Request Request Running application 3 Request … • Initialize the environment once • Handle multiple request with the same instance (concurrently) • Instance keeps running after request processing • Scaling based on metrics or manually Java in a container Initialization

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Topics for optimization • Reduce container image size • Build a custom Java runtime • Lazy loading of the container image • Ahead-of-time compilation • Optimize price-performance with AWS Graviton Kernel Base Image Image Image Container references parent image

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Seekable OCI (SOCI) • Lazy loading snapshotter plugin for containerd • SOCI combines an unmodified container image with a SOCI index (no build-time conversion step required) • the SOCI snapshotter lazily pulls the image at runtime • gain ~50% in container startup performance for large images (>250 MB)

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Custom AWS silicon with 64-bit Arm cores Available in e.g. Amazon EC2, AWS Lambda, AWS Fargate, Amazon Relational Database Service Up to 40% better price performance over comparable current generation x86-based instances Up to 60% less energy for the same performance than comparable EC2 instances AWS Graviton

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Multi-Architecture manifests Build image on arm64 or cross compile Push to registry Push to registry Docker manifest push arm64 image Multi-arch manifest Docker manifest create Build image on x86 Push to registry x86 image

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Pathways and 7Rs Applications Databases Move to managed data Managed provisioning, backups, patching, monitoring, and scaling No code changes Amazon RDS Migrate to the cloud Apps/DBs run on VMs No code changes Customer operates everything above the infrastructure VMware Cloud on AWS Amazon EC2 Database on Amazon EC2 Relocate/rehost Purpose-built databases High performance and scalability Licensing savings Amazon Aurora Amazon DynamoDB Amazon Neptune Amazon Redshift Move to open-source License freedom/savings Performance improvement Cross-platform support Refactor/rewrite Move to containers Develop and deploy faster Application portability No code changes Replatform Amazon ECS AWS Fargate Amazon EKS Move to cloud- native Move from idea to market, faster Lower costs … AWS Lambda

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Sample enterprise deployments Open Source IBM Red Hat Oracle App Server Apache TomEE Apache Tomcat WebSphere (Open Source version: Open Liberty) JBoss EAP (Open Source version: WildFly) WebLogic (former vendor: BEA) Relational Database MySQL/ MariaDB PostgreSQL IBM DB2 Oracle Database Additional Software OpenJDK Apache HTTPD Nginx IBM JDK IBM HTTP Server OpenJDK JBoss EWS (Tomcat/ HTTPD) Oracle JDK Oracle Http Server Common Operating System Linux IBM Mainframe (z/OS), Windows Server, AIX, Linux, … Red Hat Enterprise Linux Solaris, (Oracle) Linux, …

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Modernization is a Journey Legacy On-Prem workloads Decreasing Cost of IT + Increasing Business Velocity Modernized Cloud-Native Apps Legacy, migrated apps On-Prem workloads On-Prem workloads Legacy, migrated apps Modernized Cloud-Native Apps Conduct assessment / Pilot Modernize a handful of apps - Refactor or Build new Continue to scale across the org to modernize business critical apps Cloud-Native transformation complete, optimization continues 1 2 3 Modernized Cloud-Native Application Estate $$$$ $$$ $$ $ 0% 100% Multi-year Journey 4

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Serverful Java overview Application Load Balancer Web app Auto Scaling Group HTTP server Framework Application code Java application

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Why serverless? Get to market faster, deliver features Reduced operational overhead Automatic scaling by unit of consumption High performance and scalability Pay for value Pay for value vs. pay for instance Security & HA Security and high availability built in

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Event Changes in data state Requests to endpoints Changes in resource state Serverless Architecture Application code AWS Lambda function

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Serverless is more than compute AWS Lambda AWS Fargate Amazon API Gateway Amazon SNS Amazon SQS Compute Data stores Integration Amazon Aurora Serverless Amazon Simple Storage Service (Amazon S3) Amazon DynamoDB AWS AppSync AWS Step Functions

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. What are Lambda functions? Handler function • Function executed on invocation • Java 8, Java 11, Java 17 supported Event • Invocation data sent to function • JSON event payload differs by source (API, State change, Queue) Context • Additional information from the service • Example: Request ID

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Lambda Execution Model 102 Amazon SNS Amazon S3 reqs Amazon Kinesis changes AWS Lambda service Amazon API Gateway Lambda function Lambda function Synchronous Asynchronous Poll Amazon SQS AWS Lambda Function URLs

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. AWS Lambda Memory configuration AWS Lambda exposes a memory control CPU core and network capacity are allocated proportionally 10240 MB 128 MB Source: https://github.com/alexcasalboni/aws-lambda-power-tuning

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. AWS Lambda Java libraries aws-lambda-java-core ▪ Handler interfaces ▪ Context object aws-lambda-java-events ▪ Object types of AWS native integrations aws-lambda-java-tests ▪ Junit extensions to simplify testing

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Package & Deploy Java applications to AWS Lambda Code Maven Shade Plugin Maven Assembly Plugin Gradle zip task Gradle shadow plugin ZIP or JAR Archive Uber Jar with Maven Shade Plugin Zip Archive with Gradle Task Build Uber Jars or Zip Archives with familiar build tooling Upload via AWS Console, AWS CLI , Amazon S3 or framework automation

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Example: REST API AWS Lambda Amazon API Gateway AWS Lambda GET POST com.unicorn.store.GetHandler /unicorns com.unicorn.store.PostHandler

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Method 1: Handle request objects AWS Lambda Amazon API Gateway Amazon SQS Queue AWS Lambda AWS Lambda Amazon Simple Storage Service (Amazon S3)

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Method 1: Handle request objects No need for embedded HTTP servers (API Gateway or Function URL take care of this) Handle Requests via aws-lambda-java-events or raw via Map or Input-Outputstream Framework implementations Spring Cloud Function Micronaut Serverless Function (Application Type) Quarkus aws-lambda extension or Funqy

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Functions are invoked by events • AWS Lambda is invoked via events (API Event, S3 Object Event, SQS Event ..) • Events follow a certain structure • This is different from accepting a HTTP connection Amazon API Gateway AWS Lambda POST /v1/pets HTTP/2 Host: x.execute-api.eu-west-1.. User-Agent: curl/7.64.1 Accept: */* Content-Type: application/json Content-Length: 39 Body: {“data:“ : “test“} { "body": “{“data“: “test“}“ , "resource": "/{proxy+}", "path": "/path/to/resource", "httpMethod": "POST", "isBase64Encoded": true, "headers": { "Accept-Encoding": "gzip", "Accept-Language": "en-US,en;q=0.8" }, }, "requestContext": { "accountId": "123456789012", "requestId": "c6af9ac6-7b61-..", ... } }

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Adapter logic Web app function Invocation event mapped to framework request Function result mapped from framework response Web application wrapped in adapter logic. Amazon API Gateway Method 2: HTTP adapter

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Method 2: Example with AWS Serverless Java Container • Transforms events so that frameworks can handle them as if it was an HTTP Request • Routing via RestController, POJO serialization, HTTP status codes • Add the library to your code and provide a configuration class Now supports Java17 and Spring Boot 3

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Method 2: Advantages of HTTP Adapter Use the familiar @Controller programming style Easily port your existing applications to AWS Lambda Framework implementations Spring Boot via Serverless Java Container Micronaut via micronaut-function-aws-api-proxy Quarkus via AWS Lambda HTTP extension com.amazonaws.serverless.proxy.spring.SpringDelegatingLambdaContainerHandler

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. 1 2 Request Request Running application 3 Request … • Initialize the environment once • Handle multiple request with the same instance (concurrently) • Instance keeps running after request processing • Scaling based on metrics or manually Java in a container Initialization

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Execution Environment ready? Download Code Start Runtime Initialize Function Code Code execution Request Code execution No Yes Create Execution Environment Execution Environment Cold start Warm start AWS Lambda request handling

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. • Initialize execution environment on first invoke • An execution environment handles a single request at a time • If an execution environment is busy with a request – another environment is started – simpler programming model • Scales to zero if there is no request – Managed auto scaling 1 Initialization Execution Execution 2 Execution 3 Initialization 4 Execution Java with AWS Lambda Env #1 Env #2

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. 0 2 4 6 8 10 12 14 0 1 2 3 4 5 6 7 8 9 Tiered Compilation Compile Time frameworks No framework No optimization Lightweight dep. Function handler GraalVM Effort to modernize Cold-start (seconds) Provisioned Concurrency AWS Lambda performance optimizations Default with Java 17 on AWS Lambda

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. AWS Lambda Provisioned Concurrency Sets floor on minimum number of execution environments Pre-warm execution environments to reduce cold-start impact Can save costs in certain situations

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. AWS Lambda SnapStart microVM snapshot technology • Takes a snapshot of the memory and disk state • Snapshot encryption & caching for low-latency access • Creates new Lambda environments from cached snapshot • Fully Managed

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Code execution Invoke Resume Resume Snapshot Post Snapshot Hook (optional) Pre Snapshot Hook (optional) Create Execution Environment Init during deployment Download Code Start Runtime Initialize Function Code Create Snapshot first request How SnapStart works

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. SnapStart benefits • No additional cost • Minimal to no code changes • Customization via Runtime Hooks Without SnapStart With SnapStart 6.725 - 80 % 1.15 Full Duration Results will vary based on your application

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. 0 2 4 6 8 10 12 14 0 1 2 3 4 5 6 7 8 9 Tiered Compilation Compile Time frameworks No framework No optimization Lightweight dep. Function handler GraalVM Effort to modernize Cold-start (seconds) Provisioned Concurrency AWS Lambda performance optimizations Default with Java 17 on AWS Lambda SnapStart

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. GraalVM native images on AWS Lambda Create a native binary and deploy as AWS Lambda custom runtime Sub-second application startup and low memory footprint Frameworks provide built-in support (Micronaut, Quarkus, Spring) bootstrap

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Powertools for AWS Lambda J A V A L I B R A R Y T O S I M P L I F Y T R A C I N G , S T R U C T U R E D L O G G I N G A N D C U S T O M M E T R I C S • Facilitate best practice adoption • Increase developer velocity • Optional modules: • Parameter handling • Idempotency • SQS Large Message and Batching Options • Serialization, Validation and custom resource support

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. AWS Toolkit for IntelliJ IDEA • AWS Resource explorer • Inspect AWS Cloudformation stacks • View and search Cloudwatch Logs • Serverless Development (Debug, Invoke, Package) Lambda functions • Connect to Amazon RDS with temporary credentials • Amazon CodeWhisperer integration

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. AWS Toolkit for Visual Studio Code • AWS Resource & CDK explorer • Cloudformation YAML Support • Viewing Cloudwatch Log Streams • Check ECR images, write ECS task definition files • Debug & develop Serverless applications • Model Step Functions locally

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Amazon CodeWhisperer B U I L D A P P L I C A T I O N S F A S T E R A N D M O R E S E C U R E L Y W I T H Y O U R A I C O D I N G C O M P A N I O N Real-time code suggestions Reference tracker Security scan IDE context automatically sent to CodeWhisperer Receive code suggestions Amazon CodeWhisperer Uses AI to generate code recommendations based on prior code and comments in your IDE Writing code in the IDE

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. AWS SDK for Java v2 Easily interact with AWS Services from your Java code (S3, SNS, SQS etc.) Integrated retry and backoff behavior Leverage different strategies for IAM authentication GraalVM native image compatible

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Spring framework Spring Cloud for Amazon Web Services (https://awspring.io) • Interact with AWS services using well-known Spring APIs and idioms • Examples: • Spring Messaging API with Amazon SQS • Spring Cache API with Amazon ElasticSearch • Emails via Amazon SES • Bootstrap property sources with AWS Parameter Store or Secrets Manager Spring Cloud Function (AWS) • Use in conjunction with AWS Lambda to avoid payload translation • Use Spring features in a functional environment B U I L D M O D E R N J A V A B A S E D E N T E R P R I S E A P P L I C A T I O N S

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Micronaut Certified for Amazon Corretto Majority of work during compile-time • Eliminates reflection, runtime proxies, dynamic class loading • Smaller startup time & memory footprint AWS CDK Support, AWS SDK integration, AWS Lambda SnapStart Support Easily create GraalVM native images M O D E R N J V M - B A S E D , C L O U D N A T I V E F R A M E W O R K

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Quarkus Build time processing & reduction in reflection usage Reduced startup time & lower memory footprint First-Class Support for GraalVM Native Images Extensions for a variety of AWS services (KMS, S3, SQS, SNS, DynamoDB) Kubernetes & AWS Lambda extensions K U B E R N E T E S & C L O U D N A T I V E J A V A F R A M E W O R K

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Amazon CodeGuru Reviewer AWS Best Practices: Correct use of AWS APIs Resource Leaks: Correct resource handling Not sanitized user input (e.g., cross-site scripting, LDAP injection, OWASP Top 10) Sensitive Information Leak: Compliance Issues (e.g., logging of credit card number)

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Amazon CodeGuru Profiler Memory profiling, hotspots and heap summary Finds methods with high-potential for performance optimization Supports AWS Lambda, AWS EC2, Amazon ECS, EKS, Fargate and on-premise.

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Familiar Your language Just classes and methods Tool support Compatible with testing frameworks you’re already using Abstraction Sane defaults Reusable classes AWS Cloud Development Kit (AWS CDK)

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. SAM template transform Creates: • Lambda function • Runtime • Execution Policy • Code • Handler • API Gateway • API endpoint • Permissions Create DynamoDB table with sane defaults AWSTemplateFormatVersion: '2010-09-09’ Transform: AWS::Serverless-2016-10-31 Resources: GetHtmlFunction: Type: AWS::Serverless::Function Properties: CodeUri: s3://sam-demo-bucket/function.jar Handler: com.unicorn.store.RequestHandler Runtime: java17 Policies: DynamoDBReadPolicy Events: GetToDo: Type: Api Properties: Path: /todo/{id} Method: GET Listable: Type: AWS::Serverless::Simple Table AWS Serverless Application Model (AWS SAM)

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. AWS SAM CLI sam init Generates a AWS SAM template and example application code sam build Build the application package sam deploy Deploys your serverless application to the AWS Cloud sam local Test your application code locally sam logs Stream functions logs to your local machine

2023, Amazon Web Services, Inc. or its affiliates. All rights reserved. Running Java in the cloud AWS Lambda Serverless AWS Fargate Container orchestration Amazon Elastic Kubernetes Service (EKS) Amazon Elastic Container Service (ECS) Red Hat OpenShift Service on AWS (ROSA) Opinionated deployment AWS App Runner AWS Elastic Beanstalk AWS Batch AWS IoT Greengrass AWS Amplify Amazon Lightsail

Effectively running Java applications on AWS - ...

Effectively running Java applications on AWS - Deep Dive at Devoxx Belgium 2023

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