Limit the concurrency of each virtual host under apache !!!!

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

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 the following content to httpd. conf:

LoadModule vhost_limit_module libexec/mod_vhost_limit.so
AddModule mod_vhost_limit.c

Configuration:

MaxClients 150
ExtendedStatus On

NameVirtualHost *

<VirtualHost *>
ServerName server1
DocumentRoot/some/where/1
MaxVhostClients 100
</VirtualHost>

<VirtualHost *>
ServerName server2
DocumentRoot/some/where/2
MaxVhostClients 30
</VirtualHost>

<VirtualHost *>
ServerName server3
DocumentRoot/some/where/3
</VirtualHost>

Specifically, server1 is limited to 100 concurrent threads. Server2 is limited to 30 concurrent threads. Server3 is not restricted.

Note: ExtendedStatus On of mod_status is required !!

If the maximum number of concurrent threads is exceeded, the error 503 will occur 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

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

Hope to be useful to everyone !! (Source: http://www.allabc.com)