Better Lambda resource handling

[Vermyndax]

Extremely large sites may have a risk of overrunning Lambda memory and timeout limits. Large sites can consume a large amount of resources and take a long time to run.

You can mitigate this by testing. If the Lambda process "exits before completion" and reports the memory usage to be the same as the limit, then you likely need to raise the limit on the function. You may also need to expand the timeout.

A pretty large rewrite will have to occur to make this better, but for the current time, just be aware of the limits if it dies for unknown reasons.