Limit the number of concurrencies per virtual host under Apache! ! ! ! _PHP Tutorial

From http://www.allabc.com
Forum: http://seecee.dev-c.nl/forumdisplay.php?fid=4

Download module:

http ://www.nowhere-land.org/prog ... st_limit-0.4.tar.gz

Official website: http://www.nowhere-land.org/programs/mod_vhost_limit/

Installation:

apxs -c mod_vhost_limit.c -o /path/to/libexec/mod_vhost_limit.so

Add in httpd.conf:

LoadModule vhost_limit_module libexec /mod_vhost_limit.so
AddModule mod_vhost_limit.c

Configuration:

MaxClients 150
ExtendedStatus On

NameVirtualHost *


ServerName server1
DocumentRoot /some/where/1
MaxVhostClients 100



ServerName server2
DocumentRoot /some/where/2
MaxVhostClients 30



ServerName server3
DocumentRoot /some/where/3


Where: server1 is limited to 100 concurrent threads. server2 is limited to 30 concurrent threads. server3 is not restricted.

Note: ExtendedStatus On support of mod_status is required! !

If the number of concurrency exceeds the limit, a 503 error will appear on the client:

Service Temporarily Unavailable
The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.
--------------------------------------------- ---------------------------------------------

Apache/1.3.27 Server at server1 Port 80

There will be an error message similar to the following in the error_log:
[Mon Jun 23 15:22:24 2003] [error] client access to server1 deferred, MaxVhostClients 100 exceeded

Hope it’s useful to everyone! ! (Source: http://www.allabc.com)