Mercurial > hg > nginx-site
annotate xml/ru/docs/http/ngx_http_slice_module.xml @ 3005:8b8f94802f41
Fixed lang attribute, added module closing tag.
author | Ryan Davis <ry.davis@f5.com> |
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date | Thu, 31 Aug 2023 15:14:39 -0400 |
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1 <?xml version="1.0"?> |
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2 |
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3 <!-- |
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4 Copyright (C) Nginx, Inc. |
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5 --> |
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6 |
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7 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd"> |
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8 |
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9 <module name="Модуль ngx_http_slice_module" |
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10 link="/ru/docs/http/ngx_http_slice_module.html" |
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11 lang="ru" |
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12 rev="3"> |
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13 |
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14 <section id="summary"> |
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15 |
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16 <para> |
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17 Модуль <literal>ngx_http_slice_module</literal> (1.9.8) — это фильтр, |
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18 который разбивает запрос на подзапросы, |
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19 каждый из которых возвращает определённый диапазон ответа. |
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20 Фильтр обеспечивает более эффективное кэширование больших ответов. |
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21 </para> |
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22 |
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23 <para> |
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24 По умолчанию этот модуль не собирается, его сборку необходимо |
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25 разрешить с помощью конфигурационного параметра |
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26 <literal>--with-http_slice_module</literal>. |
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27 </para> |
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28 |
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29 </section> |
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30 |
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31 |
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32 <section id="example" name="Пример конфигурации"> |
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33 |
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34 <para> |
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35 <example> |
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36 location / { |
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37 <emphasis>slice</emphasis> 1m; |
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38 proxy_cache cache; |
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39 proxy_cache_key $uri$is_args$args<emphasis>$slice_range</emphasis>; |
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40 proxy_set_header Range <emphasis>$slice_range</emphasis>; |
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41 proxy_cache_valid 200 206 1h; |
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42 proxy_pass http://localhost:8000; |
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43 } |
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44 </example> |
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45 В данном примере |
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46 ответ разбивается на кэшируемые фрагменты размером в 1 мегабайт. |
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47 </para> |
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48 </section> |
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49 |
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50 |
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51 <section id="directives" name="Директивы"> |
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52 |
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53 <directive name="slice"> |
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54 <syntax><value>размер</value></syntax> |
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55 <default>0</default> |
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56 <context>http</context> |
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57 <context>server</context> |
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58 <context>location</context> |
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59 |
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60 <para> |
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61 Задаёт <value>размер</value> фрагмента. |
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62 Нулевое значение запрещает разбиение ответов на фрагменты. |
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63 Обратите внимание, что слишком низкое значение может привести |
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64 к излишнему потреблению памяти |
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65 и открытию большого количества файлов. |
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66 </para> |
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67 |
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68 <para> |
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69 Для того, чтобы подзапрос вернул необходимый диапазон, |
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70 переменная <var>$slice_range</var> должна быть |
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71 <link doc="ngx_http_proxy_module.xml" id="proxy_set_header">передана</link> на |
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72 проксируемый сервер в качестве поля <literal>Range</literal> заголовка запроса. |
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73 Если включено |
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74 <link doc="ngx_http_proxy_module.xml" id="proxy_cache">кэширование</link>, |
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75 то необходимо добавить <var>$slice_range</var> в |
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76 <link doc="ngx_http_proxy_module.xml" id="proxy_cache_key">ключ |
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77 кэширования</link> |
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78 и <link doc="ngx_http_proxy_module.xml" id="proxy_cache_valid">включить</link> |
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79 кэширование ответов с кодом 206. |
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80 </para> |
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81 |
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82 </directive> |
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83 |
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84 </section> |
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85 |
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86 |
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87 <section id="variables" name="Встроенные переменные"> |
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88 |
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89 <para> |
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90 Модуль <literal>ngx_http_slice_module</literal> |
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91 поддерживает следующие встроенные переменные: |
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92 <list type="tag"> |
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93 |
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94 <tag-name id="var_slice_range"><var>$slice_range</var></tag-name> |
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95 <tag-desc> |
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96 текущий диапазон фрагмента в формате |
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97 <link url="https://datatracker.ietf.org/doc/html/rfc7233#section-2.1">HTTP |
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98 byte range</link>, |
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99 например <literal>bytes=0-1048575</literal>. |
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100 </tag-desc> |
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101 |
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102 </list> |
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103 </para> |
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104 |
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105 </section> |
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106 |
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107 </module> |