Event-driven and serverless with Spring Cloud Function, Spring Cloud Stream, and Spring Native

Transcript

1. Thomas Vitale
   Spring User Group Italy
   May 20th, 2021
   Event-driven and serverless
   With Spring Cloud Function, Spring Cloud Stream,
   and Spring Native
   @vitalethomas
   

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2. Thomas Vitale
   • Senior Software Engineer at
   Systematic, Denmark.
   
   • Spring, Cloud Native, DevOps,
   Kubernetes, Application Security.
   
   • Author of “Cloud Native Spring in
   Action - With Spring Boot and
   Kubernetes” (Manning).
   About Me
   

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

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4. Spring Cloud Function
   thomasvitale.com @vitalethomas
   

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5. Spring Cloud Function
   Promote the implementation of business logic via functions
   • Transparent type conversion of inputs and outputs
   
   • Function composition (imperative, reactive, hybrid)
   
   • Function arity (multiple inputs/outputs)
   
   • POJO functions
   
   • Deployment of functions as JARs
   
   • Reactive support
   thomasvitale.com @vitalethomas
   

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6. Spring Cloud Function
   Function composition
   Order
   Accepted
   Order
   Dispatched
   Dispatcher Service
   Function Composition (Overview)
   pack() label()
   Input data Output data
   Data processing
   thomasvitale.com @vitalethomas
   

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7. Spring Cloud Function
   Function composition
   pack()
   OrderAccepted
   Message
   Long label()
   Flux
   FluxDispatched
   Message>
   Function Composition (Details)
   thomasvitale.com @vitalethomas
   

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8. Spring Cloud Function
   Serverless and event-driven
   • Functions exposed as HTTP endpoints and/or messaging channels
   
   • Integration with serverless platform
   
   • AWS Lambda
   
   • Azure Functions
   
   • Google Cloud Functions
   
   • Integration with event brokers
   
   • Spring Cloud Stream (RabbitMQ, Kafka) @vitalethomas
   

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9. Spring Native
   thomasvitale.com @vitalethomas
   

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10. Spring Native
    Native executables with GraalVM
    • Bene
    fi
    ts
    
    • Instant startup
    
    • Instant peak performance
    
    • Reduced memory consumption
    
    • Drawbacks
    
    • Slow and heavy build process
    
    • Fewer runtime optimizations
    
    • Con
    fi
    g for re
    fl
    ection and proxies
    @vitalethomas
    

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11. Spring Cloud Stream
    thomasvitale.com @vitalethomas
    

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12. Spring Cloud Stream
    Event-driven microservices
    • Integration with event brokers (RabbitMQ, Kafka, Kafka Streams)
    
    • Bindings between functions and external messaging systems
    
    • Publish/Subscribe
    
    • Consumer Groups
    
    • Partitions
    thomasvitale.com @vitalethomas
    

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13. Spring Cloud Stream
    Application Model
    Destination Binder
    Destination
    Binding
    Kafka RabbitMQ
    Function
    Spring Boot Application
    Destination
    Binding
    Spring Cloud Stream - Application Model
    thomasvitale.com @vitalethomas
    

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14. Spring Cloud Stream
    RabbitMQ
    Consumer
    Producer Exchange
    Queue
    Queue Consumer
    Message Broker
    routes
    messages
    to
    routes
    messages
    to
    sends
    messages
    to
    receives
    messages
    from
    receives
    messages
    from
    AMQP message routing
    thomasvitale.com @vitalethomas
    

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15. Thomas Vitale
    Spring User Group Italy
    May 20th, 2021
    Event-driven and serverless
    With Spring Cloud Function, Spring Cloud Stream,
    and Spring Native
    @vitalethomas
    

    View Slide