Mercurial > hg > nginx-site
annotate xml/ru/docs/http/ngx_http_memcached_module.xml @ 580:be54c443235a
Added copyright markers to documentation sources.
author | Ruslan Ermilov <ru@nginx.com> |
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date | Tue, 10 Jul 2012 12:59:42 +0000 |
parents | bb51d3e17dd0 |
children | 764fbac1b8b4 |
rev | line source |
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222
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1 <?xml version="1.0"?> |
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2 |
580
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Added copyright markers to documentation sources.
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3 <!-- |
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4 Copyright (C) Igor Sysoev |
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5 Copyright (C) Nginx, Inc. |
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6 --> |
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7 |
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8 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd"> |
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9 |
361 | 10 <module name="Модуль ngx_http_memcached_module" |
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11 link="/ru/docs/http/ngx_http_memcached_module.html" |
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12 lang="ru"> |
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13 |
110
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14 <section id="summary"> |
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15 |
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16 <para> |
361 | 17 Модуль <literal>ngx_http_memcached_module</literal> позволяет получать |
18 ответ из сервера memcached. | |
19 Ключ задаётся в переменной <var>$memcached_key</var>. | |
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20 Ответ в memcached должен быть предварительно помещён внешним по отношению |
361 | 21 к nginx’у способом. |
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22 </para> |
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23 |
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24 </section> |
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25 |
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26 |
361 | 27 <section id="example" name="Пример конфигурации"> |
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28 |
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29 <para> |
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30 <example> |
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31 server { |
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32 location / { |
361 | 33 set $memcached_key "$uri?$args"; |
34 memcached_pass host:11211; | |
35 error_page 404 502 504 = @fallback; | |
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36 } |
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37 |
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38 location @fallback { |
361 | 39 proxy_pass http://backend; |
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40 } |
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41 } |
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42 </example> |
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43 </para> |
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44 |
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45 </section> |
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46 |
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47 |
361 | 48 <section id="directives" name="Директивы"> |
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49 |
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50 <directive name="memcached_buffer_size"> |
102
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51 <syntax><value>размер</value></syntax> |
361 | 52 <default>4k|8k</default> |
53 <context>http</context> | |
54 <context>server</context> | |
55 <context>location</context> | |
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56 |
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57 <para> |
361 | 58 Задаёт <value>размер</value> буфера, в который будет читаться ответ, |
285 | 59 получаемый от сервера memcached. |
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60 Ответ синхронно передаётся клиенту сразу же по мере его поступления. |
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61 </para> |
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62 |
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63 </directive> |
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64 |
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65 |
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66 <directive name="memcached_connect_timeout"> |
102
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67 <syntax><value>время</value></syntax> |
361 | 68 <default>60s</default> |
69 <context>http</context> | |
70 <context>server</context> | |
71 <context>location</context> | |
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72 |
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73 <para> |
361 | 74 Задаёт таймаут для установления соединения с сервером memcached. |
75 Необходимо иметь в виду, что этот таймаут обычно не может превышать 75 секунд. | |
76
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76 </para> |
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77 |
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78 </directive> |
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79 |
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80 |
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81 <directive name="memcached_next_upstream"> |
271 | 82 <syntax> |
364 | 83 <literal>error</literal> | |
84 <literal>timeout</literal> | | |
85 <literal>invalid_response</literal> | | |
86 <literal>not_found</literal> | | |
87 <literal>off</literal> | |
88 ...</syntax> | |
102
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89 <default>error timeout</default> |
361 | 90 <context>http</context> |
91 <context>server</context> | |
92 <context>location</context> | |
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93 |
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94 <para> |
361 | 95 Определяет, в каких случаях запрос будет передан следующему серверу: |
96 <list type="tag"> | |
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97 |
361 | 98 <tag-name><literal>error</literal></tag-name> |
99 <tag-desc>произошла ошибка соединения с сервером, передачи ему запроса или | |
100 чтения заголовка ответа сервера;</tag-desc> | |
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101 |
361 | 102 <tag-name><literal>timeout</literal></tag-name> |
103 <tag-desc>произошёл таймаут во время соединения с сервером, | |
104 передачи ему запроса или чтения заголовка ответа сервера;</tag-desc> | |
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105 |
361 | 106 <tag-name><literal>invalid_response</literal></tag-name> |
107 <tag-desc>сервер вернул пустой или неверный ответ;</tag-desc> | |
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108 |
361 | 109 <tag-name><literal>not_found</literal></tag-name> |
110 <tag-desc>сервер не нашёл ответ;</tag-desc> | |
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111 |
361 | 112 <tag-name><literal>off</literal></tag-name> |
113 <tag-desc>запрещает передачу запроса следующему серверу.</tag-desc> | |
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114 |
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115 </list> |
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116 </para> |
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117 |
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118 <para> |
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119 Необходимо понимать, что передача запроса следующему серверу возможна |
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120 только при условии, что клиенту ещё ничего не передавалось. |
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121 То есть, если ошибка или таймаут возникли в середине передачи ответа, |
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122 то исправить это уже невозможно. |
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123 </para> |
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124 |
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125 </directive> |
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126 |
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127 |
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128 <directive name="memcached_pass"> |
361 | 129 <syntax><value>адрес</value></syntax> |
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130 <default/> |
361 | 131 <context>location</context> |
132 <context>if в location</context> | |
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133 |
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134 <para> |
361 | 135 Задаёт адрес сервера memcached. |
136 Адрес может быть указан в виде доменного имени или адреса, и порта, например, | |
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137 <example> |
361 | 138 memcached_pass localhost:11211; |
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139 </example> |
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140 </para> |
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141 |
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142 <para> |
361 | 143 Если доменному имени соответствует несколько адресов, то все они будут |
144 использоваться по очереди (round-robin). | |
145 И, кроме того, адрес может быть | |
135
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146 <link doc="ngx_http_upstream_module.xml">группой серверов</link>. |
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147 </para> |
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148 |
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149 </directive> |
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150 |
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151 |
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152 <directive name="memcached_read_timeout"> |
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153 <syntax><value>время</value></syntax> |
361 | 154 <default>60s</default> |
155 <context>http</context> | |
156 <context>server</context> | |
157 <context>location</context> | |
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158 |
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159 <para> |
361 | 160 Задаёт таймаут при чтении ответа сервера memcached. |
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161 Таймаут устанавливается не на всю передачу ответа, |
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162 а только между двумя операциями чтения. |
361 | 163 Если по истечении этого времени сервер memcached ничего не передаст, |
164 соединение закрывается. | |
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165 </para> |
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166 |
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167 </directive> |
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168 |
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169 |
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170 <directive name="memcached_send_timeout"> |
102
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171 <syntax><value>время</value></syntax> |
361 | 172 <default>60s</default> |
173 <context>http</context> | |
174 <context>server</context> | |
175 <context>location</context> | |
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176 |
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177 <para> |
361 | 178 Задаёт таймаут при передаче запроса серверу memcached. |
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179 Таймаут устанавливается не на всю передачу запроса, |
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180 а только между двумя операциями записи. |
361 | 181 Если по истечении этого времени сервер memcached не примет новых данных, |
182 соединение закрывается. | |
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183 </para> |
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184 |
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185 </directive> |
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186 |
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187 </section> |
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188 |
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Maxim Dounin <mdounin@mdounin.ru>
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189 </module> |