Sending HttpRequest to 2 different applications and comparing their results and performance - rest

Question

I have a module in an application 'A' that serves a HttpRequest and computes a redirect url. I have developed another application 'B' that was written in another language that would do the same thing as that module in A plus some more amount of computation and redirect the client to another webpage.
I require ideas on the following
Q. How do I check if B redirects to the correct Url as the module in A? ( do note that the module in A would compute some url but A might do some more additional computation and redirect to another url. I am only interested in comparing the output from the module vs B)
Q. How do I performance test B against A (load, response time, etc)?
Any ideas on this would be greatly appreciated
Thanks

Answer 1

You can achieve this in 2 ways, server side and client side.
For server side you can use Date object in java or any other defined way in the language you are using to get the start time for http request received and the end time after redirect url call.
Print these 2 times in log for both the cases.
For client side you can also write simple code on local machine for rest calls and log the times as I mentions for server side
Please find the demo code below:
Date start1 = new Date() ;
// first http call
//process data
// redirect call http call
Date end1 = new Date()
// print time for start1 and end1
Date start2= new Date() ;
// first http call
//process data
// redirect call http call
Date end2= new Date()
// print time for start2 and end2