Sending ~1M GET requests with PipelineClient

Hello,

I just stumbled across this library and it seems to be very powerful. I hope it is okay to ask questions here, otherwise please let me know where I should post them. I need some pointers on how to use fasthttp and more specifically the PipelineClient.

First of all not all servers support pipelining requests. How can I probe a server if pipelining works? Should I just try the PipelineClient and see if there are a lot of errors and then use the other clients as fall-back?

Second question is about load balancing across multiple hosts. What would be the way to from a host name send a dns query retrieve all A and AAAA records. And then create connections to all of them using the PipelineClient?

Thirdly how could I optimize paramters during runtime like MaxConnections and MaxPendingRequests?