Re: IWS REST API performance questions

[Nathan Andelin <nandelin@xxxxxxxxx>]

Jim,

In regard to your point about network bottlenecks, we were recently
measuring the performance of a predictive text-box utility that we were
implementing, where each keystroke made a new request to the server and
returned a filtered list of results. The latency was about 2-3 milliseconds
per response on a LAN, which increased to 80 milliseconds over the
Internet, which increased to 300 milliseconds when passed through an
external proxy server.

Nathan.


On Mon, May 10, 2021 at 9:55 AM <midrangel@xxxxxxxxxxxxxxxxx> wrote:

> As you might guess the best answer to all your questions is: "It
> depends".....
>
> Generally we see memory footprint and proper use on shared pools to have
> the
> biggest effect on this type of transaction.  Rarely CPU becomes a
> bottleneck
> if the transactions are complicated, so I suggest you make the REST API do
> as little as possible and push the bulk of the processing to asynch batch
> (data queue ??)
>
> The thing we see most often in these situations are network bottlenecks.
> DNS look ups take too long, firewall rules that cause things to bounce
> around, too slow of an internet connection, poorly configured line
> descriptions, etc..
>
> --
> Jim Oberholtzer
> Agile Technology Architects