HttpLimitZoneModule - Revision history

Admin: /* Directives */

2012-05-02T19:33:14Z

‎Directives

Admin: /* Directives */

2012-04-30T16:20:08Z

‎Directives

Admin: Undo revision 2005 by Admin (talk)

2012-04-30T16:19:21Z

Undo revision 2005 by Admin (talk)

Admin: /* Directives */

2012-04-30T16:17:20Z

‎Directives

Admin: /* limit_zone */

2012-04-30T16:16:46Z

‎limit_zone

Admin: Undo revision 1999 by Admin (talk)

2012-04-30T15:47:45Z

Undo revision 1999 by Admin (talk)

Admin: /* limit_zone */

2012-04-30T15:46:57Z

‎limit_zone

VBart: /* References */ Update link to the original documentation

2012-04-21T15:31:12Z

‎References: Update link to the original documentation

Kolbyjack: /* limit_conn_log_level */

2010-12-27T21:02:34Z

‎limit_conn_log_level

New page

= Synopsis =
This module makes it possible to limit the number of simultaneous connections for the assigned session or as a special case, from one address.

Example configuration
<geshi lang="nginx">
http {
limit_zone one $binary_remote_addr 10m;

server {
location /download/ {
limit_conn one 1;
}
}
}
</geshi>

= Directives =
== limit_zone ==
'''syntax:''' ''limit_zone zone_name $variable memory_max_size''

'''default:''' ''no''

'''context:''' ''http''

Directive describes the zone, in which the session states are stored.<BR>
The numbers of sessions is determined by the assigned variable, it depends on the size of the used Variable and '''memory_max_size''' value.

Example of the use:

<geshi lang="nginx">
limit_zone one $binary_remote_addr 10m;
</geshi>

The address of client is used as the session.
Notice that the variable <code>$binary_remote_addr</code> is used instead of <code>$remote_addr</code>.

The length of the values of the variable of <code>$remote_addr</code> can be from 7 to 15 bytes; therefore size state is equal to 32 or 64 bytes.

Length of all values of the variable of <code>$binary_remote_addr</code> is always 4 bytes and the size of the state is always 32 bytes.

When the zone size is 1M then it is possible to handle 32000 sessions with 32 bytes/session.

== limit_conn ==

'''syntax:''' ''limit_conn zone_name max_clients_per_ip''

'''default:''' ''no''

'''context:''' ''http, server, location''

Directive assigns the maximum number of simultaneous connections for one session.
With exceeding of this number the request completes by the code "Service unavailable" (503).

For example, the directive:

<geshi lang="nginx">
limit_zone one $binary_remote_addr 10m;

server {
location /download/ {
limit_conn one 1;
}
</geshi>

This allows not more than one simultaneous connection from one address.

== limit_conn_log_level ==

'''syntax:''' ''limit_conn_log_level info | notice | warn | error''

'''default:''' ''error''

'''context:''' ''http, server, location''

Sets the error log level used when a connection limit is reached

= References =
[http://sysoev.ru/nginx/docs/http/ngx_http_limit_zone_module.html Original Documentation]

@@ Line 19: / Line 19: @@
 = Directives =
 == limit_zone ==
-<include wikitext nopre src="http://wiki.nginx.org/nginx.org/ngx_http_limit_conn_module/limit_zone.txt" />
+<include wikitext nopre src="http://wiki.nginx.org/nginx.org/http/ngx_http_limit_conn_module/limit_zone.txt" />
 This directive is made obsolete in version 1.1.8, an equivalent limit_conn_zone directive with a changed syntax should be used instead:
@@ Line 46: / Line 46: @@
 == limit_conn ==
-<include wikitext nopre src="http://wiki.nginx.org/nginx.org/ngx_http_limit_conn_module/limit_conn.txt" />
+<include wikitext nopre src="http://wiki.nginx.org/nginx.org/http/ngx_http_limit_conn_module/limit_conn.txt" />
 Directive assigns the maximum number of simultaneous connections for one session.
@@ Line 65: / Line 65: @@
 == limit_conn_log_level ==
-<include wikitext nopre src="http://wiki.nginx.org/nginx.org/ngx_http_limit_conn_module/limit_conn_log_level.txt" />
+<include wikitext nopre src="http://wiki.nginx.org/nginx.org/http/ngx_http_limit_conn_module/limit_conn_log_level.txt" />
 Sets the error log level used when a connection limit is reached

← Older revision		Revision as of 15:31, 21 April 2012
Line 78:		Line 78:

	= References =		= References =
−	[http://~~sysoev~~.ru/~~nginx~~/docs/http/~~ngx_http_limit_zone_module~~.html Original Documentation]	+	[http://nginx.org/en/docs/http/ngx_http_limit_conn_module.html Original Documentation]

@@ Line 44: / Line 44: @@
 When the zone size is 1M then it is possible to handle 32000 sessions with 32 bytes/session.
 = References =
 [http://nginx.org/en/docs/http/ngx_http_limit_conn_module.html Original Documentation]

@@ Line 19: / Line 19: @@
 = Directives =
 == limit_zone ==
-'''syntax:''' ''limit_zone zone_name $variable memory_max_size''
+<include wikitext nopre src="http://wiki.nginx.org/nginx.org/ngx_http_limit_zone_module/limit_zone.txt" />
-−
-'''default:''' ''no''
-−
-'''context:''' ''http''
 Directive describes the zone, in which the session states are stored.<BR>