设置 Java AWS Lambda 虚拟机参数

Question

Is there a way I can configure VM parameters on a Java AWS Lambda? I've already searched the AWS Lambda docs and blogs, and have found no way to configure the underlying system whatsoever.

Answer 1

At least some JVM arguments can be passed via the JAVA_TOOL_OPTIONS environment variable. I've used this successfully to debug classpath loading issues with the "-verbose:class" flag for example.

Answer 2

You can provide VM parameters via a wrapper script (see AWS Lambda Developer Guide - Wrapper scripts ). The following blog shows how to do this for the -XX:+TieredCompilation -XX:TieredStopAtLevel=1 flags.