PITCHME.md

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Fighting cold startup issues for your Kotlin Lambda with GraalVM

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Cold Startup

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What is Cold Startup

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Cold Startup and the JVM

What is happening during JVM startup?

• JIT compilation
• garbage collection
• class loading
• static initialization
• ...

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Cold Startup and the JVM

Yan Cui - aws lambda – compare coldstart time...

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AWS re:Invent 2018: [REPEAT 1] Inside AWS: Technology Choices for Modern Applications (SRV305-R1)

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GraalVM

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GraalVM

@quoteFor existing Java applications, GraalVM can provide benefits by running them faster, ... creating ahead-of-time compiled native images.

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GraalVM - Native Images

@ul

• GraalVM can create native images for existing JVM-based applications
• native image generation employs static analysis to find any code reachable from the main Java method
• the reachable code is then compiled AOT into machine code
• the resulting executable is self-contained (contains VM components)

@ulend

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GraalVM

Codrut Stancu - Instant Netty Startup using GraalVM Native Image Generation

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Custom AWS Lambda Runtimes

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Custom AWS Lambda Runtimes

@ul

• open up AWS Lambda for any programming language
• a runtime is a program that runs the Lambda handler
• can be included in the deployment package

@ulend

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Custom AWS Lambda Runtimes

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Demo

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Show me the numbers

Observed cold startup times

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Conclusion

@ul

• GraalVM native images greatly reduce startup time
• native image also seem to improve runtime performance
• creating native images for an application is cumbersome
• native image generation is slow

@ulend

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@size2em

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@fa[eye] https://gitpitch.com/mduesterhoeft/kotlin-graalvm-custom-aws-lambda-runtime-talk

@fa[github] mduesterhoeft/kotlin-graalvm-custom-aws-lambda-runtime-talk

@fa[medium] Blog: Fighting cold startup issues for your Kotlin Lambda with GraalVM

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Thank you!