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AWS Lambda...nobody
AWS Lambda

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* [My sample Golang ALB lambda function on github|https://github.com/metskem/LambdaSample01]
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* [Lambda Functions as Targets|https://docs.aws.amazon.com/elasticloadbalancing/latest/application/lambda-functions.html]
* [Respond to the Load Balancer|https://docs.aws.amazon.com/elasticloadbalancing/latest/application/lambda-functions.html#respond-to-load-balancer]
* [AWS Lambda pricing|https://aws.amazon.com/lambda/pricing/], $0.20 per 1M requests and $0.000016667 for every GB-second
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The code you write does not have to be reentrant, ''"If the function is invoked again while a request is still being processed, another instance is provisioned, increasing the function's concurrency."''\\
The code you write does not have to be re-entrant, ''"If the function is invoked again while a request is still being processed, another instance is provisioned, increasing the function's concurrency."''\\
You can specify a timeout during creation of your function.\\
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If you invoke your Lambda function via an ALB, you can use lb listener rules to send request to functions based of path or http headers, see [Using AWS Lambda with an Application Load Balancer|https://docs.aws.amazon.com/lambda/latest/dg/services-alb.html], for each Lambda function you need an lb tgt group.
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To create a Lambda function you first create a Lambda function deployment package, a .zip file consisting of your code (a Go executable) and any dependencies:
{{{
GOOS=linux go build main.go
zip function.zip main
}}}
Allow the ALB to invoke your function:
{{{
aws lambda add-permission --function-name LambdaSample01 \
--statement-id load-balancer --action "lambda:InvokeFunction" \
--principal elasticloadbalancing.amazonaws.com
}}}
When coding a lambda in golang that responds to ALB events, make sure to use the [aws-lambda-go alb events|https://github.com/aws/aws-lambda-go/blob/master/events/alb.go]
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* What are layers?
This page (revision-12) was last changed on 23-Apr-2022 17:06 by HarryMetskeTop