Mercurial > hg > nginx-site

annotate xml/ru/docs/http/ngx_http_memcached_module.xml @ 271:4c6d2c614d2c

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Cleaned up XML tag mess: - all of <parameter> and <code>, and some of <dirname>, <value>, and <command> were replaced by <literal>; - the rest of <dirname> were replaced by links; - <argument> were replaced by <value>; - <value> is now rendered in HTML in italic; - <literal> and <path> can now contain <value>. Cleaned up terminology mess: - directives take "parameters".
author Ruslan Ermilov <ru@nginx.com>
date Fri, 23 Dec 2011 17:29:59 +0000
parents bfe3eff81d04
children 2305be197a84
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 <?xml version="1.0"?>
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2
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3 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd">
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4
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5 <module name="Директивы модуля ngx_http_memcached_module"
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6 link="/ru/docs/http/ngx_http_memcached_module.html"
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7 lang="ru">
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8
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9 <section id="summary">
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10
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11 <para>
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12 Модуль ngx_http_memcached_module позволяет получать ответ из сервера memcached.
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13 Ключ задаётся в переменной $memcached_key.
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14 Ответ в memcached должен быть предварительно помещён внешним по отношению
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15 к nginx'у способом.
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16 </para>
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17
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18 </section>
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19
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20
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21 <section name="Пример конфигурации" id="example">
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22
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23 <para>
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24 <example>
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25 server {
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26 location / {
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27 set $memcached_key "$uri?$args";
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28 memcached_pass host:11211;
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29 error_page 404 502 504 = @fallback;
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30 }
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31
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32 location @fallback {
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33 proxy_pass http://backend;
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34 }
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35 }
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36 </example>
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37 </para>
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38
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39 </section>
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40
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41
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42 <section name="Директивы" id="directives">
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43
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44 <directive name="memcached_buffer_size">
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45 <syntax><value>размер</value></syntax>
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46 <default>4k/8k</default>
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47 <context>http, server, location</context>
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48
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49 <para>
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50 Директива задаёт размер буфера, в который будет читаться ответ,
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51 получаемый от cервера memcached.
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52 Ответ синхронно передаётся клиенту сразу же по мере его поступления.
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53 </para>
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54
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55 </directive>
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56
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57
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58 <directive name="memcached_connect_timeout">
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59 <syntax><value>время</value></syntax>
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60 <default>60</default>
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61 <context>http, server, location</context>
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62
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63 <para>
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64 Директива задаёт таймаут для соединения с cервером memcached.
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65 Необходимо иметь в виду, что этот таймаут не может быть больше 75 секунд.
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66 </para>
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67
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68 </directive>
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69
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70
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71 <directive name="memcached_next_upstream">
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72 <syntax>
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73 <literal>error</literal> |
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74 <literal>timeout</literal> |
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75 <literal>invalid_response</literal> |
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76 <literal>not_found</literal> |
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77 <literal>off</literal>
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78 ...</syntax>
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79 <default>error timeout</default>
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80 <context>http, server, location</context>
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81
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82 <para>
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83 Директива определяет, в каких случаях запрос будет передан следующему
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84 серверу memcached:
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85 <list type="bullet">
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86
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87 <listitem>
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88 error — произшла ошибка соединения с сервером, передачи ему запроса или
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89 чтения заголовка ответа сервера;
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90 </listitem>
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91
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92 <listitem>
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93 timeout — произошёл таймаут во время соединения с сервером,
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94 передачи ему запроса или чтения заголовка ответа сервера;
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95 </listitem>
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96
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97 <listitem>
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98 invalid_response — сервер вернул пустой или неверный ответ;
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99 </listitem>
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100
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101 <listitem>
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102 not_found — сервер не нашёл ответ;
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103 </listitem>
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104
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105 <listitem>
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106 off — запрещает передачу запроса следующему серверу;
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107 </listitem>
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108
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109 </list>
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110 </para>
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111
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112 <para>
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113 Необходимо понимать, что передача запроса следующему серверу возможна
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114 только при условии, что клиенту ещё ничего не передавалось.
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115 То есть, если ошибка или таймаут возникли в середине передачи ответа,
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116 то исправить это уже невозможно.
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117 </para>
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118
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119 </directive>
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120
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121
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122 <directive name="memcached_pass">
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123 <syntax><value>URL</value></syntax>
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124 <default/>
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125 <context>location, if в location, limit_except</context>
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126
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127 <para>
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128 Директива задаёт адрес сервера memcached.
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129 Адрес может быть указан в виде доменного имени или адреса и порта:
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130 <example>
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131 memcached_pass localhost:11211;
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132 </example>
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133 </para>
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134
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135 <para>
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136 Если доменное имя резолвится в несколько адресов, то все они будут
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137 использоваться в режиме round-robin.
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138 И кроме того, адрес может быть
135
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139 <link doc="ngx_http_upstream_module.xml">группой серверов</link>.
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140 </para>
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141
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142 </directive>
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143
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144
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145 <directive name="memcached_read_timeout">
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146 <syntax><value>время</value></syntax>
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147 <default>60</default>
76
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Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
148 <context>http, server, location</context>
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
149
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
150 <para>
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
151 Директива задаёт таймаут при чтении ответа сервера memcached.
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
152 Таймаут устанавливается не на всю передачу ответа,
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
153 а только между двумя операциями чтения.
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
154 Если по истечении этого времени сервер ничего не передаст,
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
155 то nginx закрывает соединение.
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
156 </para>
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
157
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
158 </directive>
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
159
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
160
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
161 <directive name="memcached_send_timeout">
102
c76a257f3fd4 The directive name is now automatically printed in <default> and <syntax>.
Ruslan Ermilov <ru@nginx.com>
parents: 99
diff changeset
162 <syntax><value>время</value></syntax>
c76a257f3fd4 The directive name is now automatically printed in <default> and <syntax>.
Ruslan Ermilov <ru@nginx.com>
parents: 99
diff changeset
163 <default>60</default>
76
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
164 <context>http, server, location</context>
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
165
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
166 <para>
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
167 Директива задаёт таймаут при передаче запроса серверу memcached.
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
168 Таймаут устанавливается не на всю передачу запроса,
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
169 а только между двумя операциями записи.
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
170 Если по истечении этого времени сервер не примет новых данных,
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
171 то nginx закрывает соединение.
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
172 </para>
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
173
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
174 </directive>
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
175
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
176 </section>
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
177
4a4caa566120 Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
178 </module>