Mercurial > hg > nginx-site

comparison xml/en/docs/http/ngx_http_fastcgi_module.xml @ 1910:41cf2c2d8c5c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Cache: support for stale-while-revalidate and stale-if-error.
author Yaroslav Zhuravlev <yar@nginx.com>
date Wed, 15 Feb 2017 23:17:00 +0300
parents 399d0e188195
children ec4af97e4403
comparison
equal deleted inserted replaced
1909:399d0e188195 1910:41cf2c2d8c5c
8 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd"> 8 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd">
9 9
10 <module name="Module ngx_http_fastcgi_module" 10 <module name="Module ngx_http_fastcgi_module"
11 link="/en/docs/http/ngx_http_fastcgi_module.html" 11 link="/en/docs/http/ngx_http_fastcgi_module.html"
12 lang="en" 12 lang="en"
13 rev="41"> 13 rev="42">
14 14
15 <section id="summary"> 15 <section id="summary">
16 16
17 <para> 17 <para>
18 The <literal>ngx_http_fastcgi_module</literal> module allows passing 18 The <literal>ngx_http_fastcgi_module</literal> module allows passing
629 629
630 <para> 630 <para>
631 The <literal>error</literal> parameter also permits 631 The <literal>error</literal> parameter also permits
632 using a stale cached response if a FastCGI server to process a request 632 using a stale cached response if a FastCGI server to process a request
633 cannot be selected. 633 cannot be selected.
634 The same behavior can be enabled with the
635 “<link url="https://tools.ietf.org/html/rfc5861#section-4">stale-if-error</link>”
636 extension of the <header>Cache-Control</header> response header field (1.11.10)
637 for a specified number of seconds after the response became stale,
638 however, this has lower priority than using the directive parameter.
634 </para> 639 </para>
635 640
636 <para id="fastcgi_cache_use_stale_updating"> 641 <para id="fastcgi_cache_use_stale_updating">
637 Additionally, the <literal>updating</literal> parameter permits 642 Additionally, the <literal>updating</literal> parameter permits
638 using a stale cached response if it is currently being updated. 643 using a stale cached response if it is currently being updated.
639 This allows minimizing the number of accesses to FastCGI servers 644 This allows minimizing the number of accesses to FastCGI servers
640 when updating cached data. 645 when updating cached data.
646 The same behavior can be enabled with the
647 “<link url="https://tools.ietf.org/html/rfc5861#section-3">stale-while-revalidate</link>”
648 extension of the <header>Cache-Control</header> response header field (1.11.10)
649 for a specified number of seconds after the response became stale,
650 however, this has lower priority than using the directive parameter.
641 </para> 651 </para>
642 652
643 <para> 653 <para>
644 To minimize the number of accesses to FastCGI servers when 654 To minimize the number of accesses to FastCGI servers when
645 populating a new cache element, the <link id="fastcgi_cache_lock"/> 655 populating a new cache element, the <link id="fastcgi_cache_lock"/>