Request Response Measure

 

In continuation of the last blog,  today we are going to talk about 2 key metric of any system.  They are

1. Request time (input)
2. Response time (output)

It is essential to indicate the performance of the underlying system.  

In AWS cloud world, the input request comes as user/system input to our processing engine.  AWS ELB (in simple term cluster manager) is the middle layer to route the concurrent bulk requests in an evenly distributed load.  The actual processing engine is hosted in EC2 instance.

Here, request processing time is the time taken from user request to ELB.  It is measured in every load balancer log records along with the back end processing time between ELB and actual EC2 server.

Response processing time is measure as time taken to return the response from ELB.

Thus, the fundamental request and response time elements are integral part of ELB logs in AWS cloud systems.