Mercurial > hg > nginx-site
comparison xml/en/docs/http/ngx_http_limit_req_module.xml @ 2014:6e66487c5756
Limit_req: document what happens on zone exhaustion (ticket #1133)
author | Ruslan Ermilov <ru@nginx.com> |
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date | Tue, 08 Aug 2017 09:23:57 +0300 |
parents | 469aebbd94d0 |
children | 283b1e67eaa6 |
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2013:469aebbd94d0 | 2014:6e66487c5756 |
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8 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd"> | 8 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd"> |
9 | 9 |
10 <module name="Module ngx_http_limit_req_module" | 10 <module name="Module ngx_http_limit_req_module" |
11 link="/en/docs/http/ngx_http_limit_req_module.html" | 11 link="/en/docs/http/ngx_http_limit_req_module.html" |
12 lang="en" | 12 lang="en" |
13 rev="7"> | 13 rev="8"> |
14 | 14 |
15 <section id="summary"> | 15 <section id="summary"> |
16 | 16 |
17 <para> | 17 <para> |
18 The <literal>ngx_http_limit_req_module</literal> module (0.7.21) is used | 18 The <literal>ngx_http_limit_req_module</literal> module (0.7.21) is used |
196 is always 4 bytes for IPv4 addresses or 16 bytes for IPv6 addresses. | 196 is always 4 bytes for IPv4 addresses or 16 bytes for IPv6 addresses. |
197 The stored state always occupies | 197 The stored state always occupies |
198 64 bytes on 32-bit platforms and 128 bytes on 64-bit platforms. | 198 64 bytes on 32-bit platforms and 128 bytes on 64-bit platforms. |
199 One megabyte zone can keep about 16 thousand 64-byte states | 199 One megabyte zone can keep about 16 thousand 64-byte states |
200 or about 8 thousand 128-byte states. | 200 or about 8 thousand 128-byte states. |
201 If the zone storage is exhausted, the server will return the | 201 </para> |
202 <link id="limit_req_status">error</link> | 202 |
203 to all further requests. | 203 <para> |
204 If the zone storage is exhausted, the least recently used state is removed. | |
205 Even if after that a new state cannot be created, the request is terminated with | |
206 an <link id="limit_req_status">error</link>. | |
204 </para> | 207 </para> |
205 | 208 |
206 <para> | 209 <para> |
207 The rate is specified in requests per second (r/s). | 210 The rate is specified in requests per second (r/s). |
208 If a rate of less than one request per second is desired, | 211 If a rate of less than one request per second is desired, |