Pre-built Document Generator function resource time-out

Summary:

The pre-built Document Generator function regularly times out completely, or is very slow at the least.

Content:

I have successfully integrated the new(-ish) pre-built Document Generator function in my APEX application. It works, but many times it is extremely slow, or completely times out.

From the documentation:

{"code":"FunctionInvokeServiceUnavailable","message":"Timed out - server too busy"}
Fn: Error invoking function. status: 503 message: Timed out - server too busy

The message indicates that OCI Functions is currently unable to handle the request, possibly because of insufficient capacity. Encountering this error message multiple times is not uncommon, because it can take some time to scale up OCI Functions capacity to meet demand from function invocations.