Poor performance when loading huge number of server section

Server NGINX
1

Hi there,
I got a problem when using nginx as a reverse proxy. Configurations
using per server policy to set upstream host. Nginx spends significant
time loading config files as while as virtual server inscreased to a
large number. Here’s a rough statistics:

| server sections | load time(sec) |
|-----------------±---------------|
| 50000 | 242 |
| 80000 | 910 |
| 100000 | 1764 |

I know this is an unusual usage of nginx, but there is such demand.

So I want to know:

  1. Is nginx not designed to use such large number of config?
  2. Does someone has some experience on this? Could you please show me a
    clue?

Thanks.

–
anb
2013.8.9

2

On Fri, Aug 09, 2013 at 01:41:49PM +0800, Anb wrote:

| 100000 | 1764 |

I know this is an unusual usage of nginx, but there is such demand.

So I want to know:

  1. Is nginx not designed to use such large number of config?
  2. Does someone has some experience on this? Could you please show me a clue?

Thanks.

How about mapping $server_name to upstream instead?

map $server_name $upstream {
default …;
[100k entries]
}

server {
…
proxy_pass http://$upstream;
…
}