I've found it very helpful in distributed environments to ensure that you are giving the incoming request an extra "Request ID"-style header. Make sure this he

I've found it very helpful in distributed environments to ensure that you are giving the incoming request an extra "Request ID"-style header. Make sure this header is propagated everywhere, and logged everywhere. Makes debugging much, much easier. Still gets hard at scale, which is why tools like New Relic have various "distributed tracing" features now.