Test Unix socket

This is a small test/benchmark to se if the use of a unix domain socket in Nginx would affect performance in any significant way for an api

The api is hosted by .NET Core and containerized. Test is done by using apache benchmark. doing 100 concurrent request 50 times. The request that is done has a payload of 1,7 KB.

ab -n 5000 -c 100 "http://localhost/v3/api/"

Result

This is the average request per second after 10 tests against each configuration.

	Requests per second
HTTP	100
HTTP (Keepalive enabled)	118
Unix Socket	98
Unix Socket (Keepalive enabled)	120

Keepalive

Nginx option keepalive has an impact on both http and unix sockets. It looks to be far more important than the actual connection type.

upstream backend {
        keepalive 100;
        server 10.265.44.3:8080;
}