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Documented size of keys_zone for commercial version (trac #1286).
author Yaroslav Zhuravlev <yar@nginx.com>
date Thu, 26 Oct 2017 15:50:00 +0300
parents 4f3dd2f548cf
children fb5eef3637a4
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2068:3d9e7993c201 2069:fc3ba2e76974
8 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd"> 8 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd">
9 9
10 <module name="Module ngx_http_scgi_module" 10 <module name="Module ngx_http_scgi_module"
11 link="/en/docs/http/ngx_http_scgi_module.html" 11 link="/en/docs/http/ngx_http_scgi_module.html"
12 lang="en" 12 lang="en"
13 rev="36"> 13 rev="37">
14 14
15 <section id="summary"> 15 <section id="summary">
16 16
17 <para> 17 <para>
18 The <literal>ngx_http_scgi_module</literal> module allows passing 18 The <literal>ngx_http_scgi_module</literal> module allows passing
427 <para> 427 <para>
428 In addition, all active keys and information about data are stored 428 In addition, all active keys and information about data are stored
429 in a shared memory zone, whose <value>name</value> and <value>size</value> 429 in a shared memory zone, whose <value>name</value> and <value>size</value>
430 are configured by the <literal>keys_zone</literal> parameter. 430 are configured by the <literal>keys_zone</literal> parameter.
431 One megabyte zone can store about 8 thousand keys. 431 One megabyte zone can store about 8 thousand keys.
432 <note>
433 As part of
434 <commercial_version>commercial subscription</commercial_version>,
435 the shared memory zone also stores extended
436 cache <link doc="ngx_http_api_module.xml" id="http_caches_">information</link>,
437 thus, it is required to specify a larger zone size for the same number of keys.
438 For example,
439 one megabyte zone can store about 4 thousand keys.
440 </note>
432 </para> 441 </para>
433 442
434 <para> 443 <para>
435 Cached data that are not accessed during the time specified by the 444 Cached data that are not accessed during the time specified by the
436 <literal>inactive</literal> parameter get removed from the cache 445 <literal>inactive</literal> parameter get removed from the cache