title: How can I uniquely ID the AWS Lambda container that my function is running in?
body: <p>I would like to get the (AWS Lambda container) instance ID that my function is running in.</p>
  
  <p>For now I would just log it - it would help me when debugging issues with my caching algorithm: I could identify which invocations were happening in the same instance.</p>
  
  <p>I looked at <a href="http://docs.aws.amazon.com/lambda/latest/dg/nodejs-prog-model-context.html" rel="noreferrer">the docs for the context object</a> and don't see anything there.</p>
  
  <p>I could do it manually - and I'll put that below as my fallback answer - but I thought I would check whether some sort of real instance ID is available somehow.</p>