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java-k8s

Build and Deploy Optimized App.

Reactive for better resource utilization

  • Why Reactive?
    • Non-Blocking
      • Non-blocking communication allows recipients to only consume resources while active, leading to less system overhead.
    • Message Driven
    • Funny Money
      • We can do more with same resources.
  • Project Reactor
    • Servlet --> Webflux
    • Tomcat --> Netty
    • JDBC --> R2DBC

img.png

Demo the project.

  • Develop Locally
    • Explain application functionality
    • Show readiness and liveliness
      • Application knows when it is not working correctly
    • Show Stream
    • Show Triggering of app down, and graceful exit

Buildpacks

  • Paketo

Deploy and maintain.

  • Deploy
  • Config
  • Run
  • Repeat of the functionality and app behavior

Road Ahead - Serverless

  • Serverless (Lambda/Cloud Functions)
    • managed by cloud providers (startup/shutdown)
    • Billed by milli-secs
  • Problem with Java in Serverless
    • Build time vs Run time
    • Memory Footprint
    • Dependency Injection, class loader, proxies
  • How to Lower these ^^?
    • Scripting Language Frameworks
      • Serverless framework (Demo if time permits.)
    • Rethink JVM/Native image
      • Demo of running in GraalVM (Demo if time permits)
    • Rethink Framework
      • Micronaut

Q&A