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annotate xml/ru/docs/stream/ngx_stream_split_clients_module.xml @ 1759:42d2806f5b28

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Updated example in ngx_stream_split_clients_module with variables.
author Yaroslav Zhuravlev <yar@nginx.com>
date Wed, 03 Aug 2016 14:20:50 +0300
parents b4de612feff8
children
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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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9 <module name="Модуль ngx_stream_split_clients_module"
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10 link="/ru/docs/stream/ngx_stream_split_clients_module.html"
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11 lang="ru"
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12 rev="2">
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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_stream_split_clients_module</literal> (1.11.3) создаёт
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18 переменные для A/B тестирования (также известного как “split-тестирование”).
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19 </para>
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20
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21 </section>
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22
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23
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24 <section id="example" name="Пример конфигурации">
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25
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26 <para>
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27 <example>
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28 stream {
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29 ...
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30 split_clients "${remote_addr}AAA" $upstream {
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31 0.5% feature_test1;
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32 2.0% feature_test2;
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33 * production;
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34 }
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35
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36 server {
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37 ...
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38 proxy_pass $upstream;
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39 }
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40 }
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41 </example>
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42 </para>
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43
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44 </section>
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46
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47 <section id="directives" name="Директивы">
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48
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49 <directive name="split_clients">
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50 <syntax block="yes">
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51 <value>строка</value>
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52 <value>$переменная</value></syntax>
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53 <default/>
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54 <context>stream</context>
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56 <para>
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57 Создаёт переменную для A/B тестирования, например:
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58 <example>
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59 split_clients "${remote_addr}AAA" $variant {
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60 0.5% .one;
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61 2.0% .two;
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62 * "";
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63 }
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64 </example>
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65 Значение исходной строки хэшируется с помощью MurmurHash2.
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66 В приведённом примере при значениях хэша от 0 до 21474835 (0.5%)
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67 переменная <var>$variant</var> получит значение <literal>".one"</literal>.
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68 При значениях хэша от 21474836 до 107374180 (2%) — <literal>".two"</literal>.
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69 И при значениях хэша от 107374181 до 4294967295 — <literal>""</literal>
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70 (пустая строка).
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71 </para>
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72
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73 </directive>
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74
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75 </section>
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77 </module>