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Thomas Vitale DevTalks June 8th, 2022 Serverless Java With Spring Boot @vitalethomas

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Systematic • Software Architect at Systematic, Denmark. • Author of “Cloud Native Spring in Action” (Manning). • Spring Security and Spring Cloud contributor. Thomas Vitale thomasvitale.com @vitalethomas

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Serverless thomasvitale.com @vitalethomas

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Serverless Architectures Developers focus on code Focus on business logic Developer Platform Infrastructure Provisioning Workload Management Autoscaling Scaling to zero thomasvitale.com @vitalethomas

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Spring Native thomasvitale.com @vitalethomas

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Spring Native Native executables with GraalVM Slower Heavier Build Instant Startup Reduced Memory Consumption Instant Peak Performance Fewer Runtime Optimizations thomasvitale.com @vitalethomas

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Packaging Spring Boot JAR and native thomasvitale.com @vitalethomas JAR Native Gradle bootJar Maven spring-boot:repackage Gradle nativeCompile Maven -Pnative package

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Packaging Spring Boot Container images with Cloud Native Buildpacks thomasvitale.com @vitalethomas Container Image Gradle bootBuildImage Maven spring-boot:build-image

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Knative thomasvitale.com @vitalethomas

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Knative Serving Serverless Containers on Kubernetes Developer-friendly abstractions From code to URL Autoscaling Scaling to zero Progressive Rollouts Request-driven Event-driven Cloud agnostic thomasvitale.com @vitalethomas

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Serverless experience on Kubernetes From containers to deployment with Knative Image pack kpack bootBuildImage kn URL Kubernetes Cluster Container Container Container Knative Serving thomasvitale.com @vitalethomas

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Functions thomasvitale.com @vitalethomas

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Functional Programming Paradigm Java 8 Functional Interfaces thomasvitale.com @vitalethomas Supplier Function Consumer

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Spring Cloud Function thomasvitale.com @vitalethomas

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Spring Cloud Function Business logic as functions thomasvitale.com @vitalethomas Transparent Type Conversion Function Arity Function Composition Reactive Support JAR Functions

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Spring Cloud Function Deployment and integrations thomasvitale.com @vitalethomas Knative CloudEvents RSocket Azure Functions Google Cloud Functions AWS Lambda

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CloudEvents Interoperability and standardization Metadata Data Id Source Type Payload JSON AMQP Kafka MQTT thomasvitale.com @vitalethomas

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Spring Cloud Stream thomasvitale.com @vitalethomas

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Spring Cloud Stream Event-driven microservices thomasvitale.com @vitalethomas Integration with event brokers Bindings with functions Publish Subscribe Consumer Groups Partitions

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Discount codes Manning • 35% discount code, valid for all products in all format • ctwdevtalksro22 • manning.com

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https://github.com/ThomasVitale/awesome-spring

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Resources Source code and more • Sample project: • https://github.com/ThomasVitale/devtalks-2022-serverless-java • Knative and Spring - Bringing back the func: • https://youtu.be/EKDYE_dStTI thomasvitale.com @vitalethomas

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Thomas Vitale DevTalks June 8th, 2022 Serverless Java With Spring Boot @vitalethomas