aws lambda function not able to create a new instance each time it is invoked and resuses old instances

Hello,

According to AWS documentation, it's not possible to create a new instance with a fresh environment each time, since after the function and all extensions have completed, Lambda freezes the execution environment for some time in anticipation of another function invocation.

It doesn't always happen, so do not assume that Lambda automatically reuses the execution environment for all subsequent function invocations, but it is the default/expected behaviour.

Lambda was designed to reuse the execution environment between invocations to save on cold starts. Why do you need to create a new one for each invocation?