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comparison xml/en/docs/http/ngx_http_limit_req_module.xml @ 1699:6c96a644b0b3

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Corrected description of $binary_remote_addr and saved state.
author Yaroslav Zhuravlev <yar@nginx.com>
date Thu, 05 May 2016 14:43:40 +0300
parents 7945dac7ad47
children 469aebbd94d0
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1698:2052ffb3529a 1699:6c96a644b0b3
8 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd"> 8 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd">
9 9
10 <module name="Module ngx_http_limit_req_module" 10 <module name="Module ngx_http_limit_req_module"
11 link="/en/docs/http/ngx_http_limit_req_module.html" 11 link="/en/docs/http/ngx_http_limit_req_module.html"
12 lang="en" 12 lang="en"
13 rev="5"> 13 rev="6">
14 14
15 <section id="summary"> 15 <section id="summary">
16 16
17 <para> 17 <para>
18 The <literal>ngx_http_limit_req_module</literal> module (0.7.21) is used 18 The <literal>ngx_http_limit_req_module</literal> module (0.7.21) is used
189 </para> 189 </para>
190 190
191 <para> 191 <para>
192 A client IP address serves as a key. 192 A client IP address serves as a key.
193 Note that instead of <var>$remote_addr</var>, the 193 Note that instead of <var>$remote_addr</var>, the
194 <var>$binary_remote_addr</var> variable is used here, 194 <var>$binary_remote_addr</var> variable is used here.
195 that allows decreasing the state size down to 64 bytes. 195 The <var>$binary_remote_addr</var> variable’s size
196 One megabyte zone can keep about 16 thousand 64-byte states. 196 is always 4 bytes for IPv4 addresses or 16 bytes for IPv6 addresses.
197 The stored state always occupies
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
200 or about 8 thousand 128-byte states.
197 If the zone storage is exhausted, the server will return the 201 If the zone storage is exhausted, the server will return the
198 <http-status code="503" text="Service Temporarily Unavailable"/> 202 <http-status code="503" text="Service Temporarily Unavailable"/>
199 error to all further requests. 203 error to all further requests.
200 </para> 204 </para>
201 205