[gshulegaard]

Both http2_max_concurrent_streams and keepalive_requests (the configuration parameters discussed in this article) are configuration parameters available in open source nginx:

http://nginx.org/en/docs/http/ngx_http_v2_module.html#http2_...

http://nginx.org/en/docs/http/ngx_http_core_module.html#keep...

So are limit_conn and limit_req:

https://nginx.org/en/docs/http/ngx_http_limit_conn_module.ht...

https://nginx.org/en/docs/http/ngx_http_limit_req_module.htm...

So it pertains to both NGINX and NGINX+.