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Comment by rmbyrro | Hacker News Reader

Amazing, now I don't have to pay API Gateway to do just an HTTP routing.

As far as I know, you can call the Lambda via the AWS SDK.

You can but that has security + protocol implications and is not as useful for general web consumers. This seems better IMHO.

Yeah you need an aws iam identity to call lambda invoke, for public consumer this is better.

You could always use an ALB? ALB has some nice extensions as well.

Don't ALBs have a minimum hourly cost? Last time I looked into this, you couldn't run an ALB for less than ~$17/month.

Definitely cheaper than API gateways for even a moderate amount of traffic, but API gateway costs scale down to zero for unused or rarely used endpoints.

What ALBs don’t have is a maximum payload size. :)

Note: The “official” way to work around this is to write your large payload to S3 and then create a pre-signed S3 URL that you return to the caller instead.

There are limits all the way down.

ALB with Lambda - 1MB

Lambda - 6MB

Given that we're talking about ALBs with Lambda targets, their limit is actually quite a bit lower than API Gateway: 1MB

https://docs.aws.amazon.com/elasticloadbalancing/latest/appl...

Using an ALB in front of a lambda, while neat is a pretty expensive way to do it. Something like $15 a month.

That’s not expensive if you have a money making app.

One way to keep your money making all profitable is to not waste money, for instance on cloud services that can be workarounded for cheaper.

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