Mercurial > hg > nginx-site
comparison xml/en/docs/http/ngx_http_proxy_module.xml @ 1810:bc6341aaa832
Added cache manager parameters to proxy_cache path and friends.
author | Yaroslav Zhuravlev <yar@nginx.com> |
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date | Fri, 07 Oct 2016 20:35:11 +0300 |
parents | 621d0c682113 |
children | 35ec213c16cf |
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1809:2245f2827e2f | 1810:bc6341aaa832 |
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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_proxy_module" | 10 <module name="Module ngx_http_proxy_module" |
11 link="/en/docs/http/ngx_http_proxy_module.html" | 11 link="/en/docs/http/ngx_http_proxy_module.html" |
12 lang="en" | 12 lang="en" |
13 rev="50"> | 13 rev="51"> |
14 | 14 |
15 <section id="summary"> | 15 <section id="summary"> |
16 | 16 |
17 <para> | 17 <para> |
18 The <literal>ngx_http_proxy_module</literal> module allows passing | 18 The <literal>ngx_http_proxy_module</literal> module allows passing |
356 [<literal>levels</literal>=<value>levels</value>] | 356 [<literal>levels</literal>=<value>levels</value>] |
357 [<literal>use_temp_path</literal>=<literal>on</literal>|<literal>off</literal>] | 357 [<literal>use_temp_path</literal>=<literal>on</literal>|<literal>off</literal>] |
358 <literal>keys_zone</literal>=<value>name</value>:<value>size</value> | 358 <literal>keys_zone</literal>=<value>name</value>:<value>size</value> |
359 [<literal>inactive</literal>=<value>time</value>] | 359 [<literal>inactive</literal>=<value>time</value>] |
360 [<literal>max_size</literal>=<value>size</value>] | 360 [<literal>max_size</literal>=<value>size</value>] |
361 [<literal>manager_files</literal>=<value>number</value>] | |
362 [<literal>manager_sleep</literal>=<value>time</value>] | |
363 [<literal>manager_threshold</literal>=<value>time</value>] | |
361 [<literal>loader_files</literal>=<value>number</value>] | 364 [<literal>loader_files</literal>=<value>number</value>] |
362 [<literal>loader_sleep</literal>=<value>time</value>] | 365 [<literal>loader_sleep</literal>=<value>time</value>] |
363 [<literal>loader_threshold</literal>=<value>time</value>] | 366 [<literal>loader_threshold</literal>=<value>time</value>] |
364 [<literal>purger</literal>=<literal>on</literal>|<literal>off</literal>] | 367 [<literal>purger</literal>=<literal>on</literal>|<literal>off</literal>] |
365 [<literal>purger_files</literal>=<value>number</value>] | 368 [<literal>purger_files</literal>=<value>number</value>] |
421 | 424 |
422 <para> | 425 <para> |
423 The special “cache manager” process monitors the maximum cache size set | 426 The special “cache manager” process monitors the maximum cache size set |
424 by the <literal>max_size</literal> parameter. | 427 by the <literal>max_size</literal> parameter. |
425 When this size is exceeded, it removes the least recently used data. | 428 When this size is exceeded, it removes the least recently used data. |
429 The data is removed in iterations configured by | |
430 <literal>manager_files</literal>, | |
431 <literal>manager_threshold</literal>, and | |
432 <literal>manager_sleep</literal> parameters (1.11.5). | |
433 During one iteration no more than <literal>manager_files</literal> items | |
434 are deleted ( by default, 100). | |
435 The duration of one iteration is limited by the | |
436 <literal>manager_threshold</literal> parameter (by default, 200 milliseconds). | |
437 Between iterations, a pause configured by the <literal>manager_sleep</literal> | |
438 parameter (by default, 50 milliseconds) is made. | |
426 </para> | 439 </para> |
427 | 440 |
428 <para> | 441 <para> |
429 A minute after the start the special “cache loader” process is activated. | 442 A minute after the start the special “cache loader” process is activated. |
430 It loads information about previously cached data stored on file system | 443 It loads information about previously cached data stored on file system |
431 into a cache zone. | 444 into a cache zone. |
432 The loading is done in iterations. | 445 The loading is also done in iterations. |
433 During one iteration no more than <literal>loader_files</literal> items | 446 During one iteration no more than <literal>loader_files</literal> items |
434 are loaded (by default, 100). | 447 are loaded (by default, 100). |
435 Besides, the duration of one iteration is limited by the | 448 Besides, the duration of one iteration is limited by the |
436 <literal>loader_threshold</literal> parameter (by default, 200 milliseconds). | 449 <literal>loader_threshold</literal> parameter (by default, 200 milliseconds). |
437 Between iterations, a pause configured by the <literal>loader_sleep</literal> | 450 Between iterations, a pause configured by the <literal>loader_sleep</literal> |