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annotate xml/en/docs/http/ngx_http_split_clients_module.xml @ 355:5d731825a6c2
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author | Ruslan Ermilov <ru@nginx.com> |
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date | Wed, 25 Jan 2012 13:34:17 +0000 |
parents | 5a848934a12d |
children | bb51d3e17dd0 |
rev | line source |
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English translation of ngx_http_geoip_module, ngx_http_map_module,
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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="Module ngx_http_split_clients_module" |
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6 link="/en/docs/http/ngx_http_split_clients_module.html" |
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7 lang="en"> |
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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 The <literal>ngx_http_split_clients_module</literal> module creates |
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13 variables suitable for A/B testing, also known as split testing. |
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14 </para> |
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15 |
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16 </section> |
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17 |
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18 |
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19 <section id="example" name="Example Configuration"> |
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20 |
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21 <para> |
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22 <example> |
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23 http { |
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24 split_clients "${remote_addr}AAA" $variant { |
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25 0.5% .one; |
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26 2.0% .two; |
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27 * ""; |
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28 } |
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29 |
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30 server { |
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31 location / { |
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32 index index${variant}.html; |
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33 </example> |
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34 </para> |
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35 </section> |
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36 |
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37 |
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38 <section id="directives" name="Directives"> |
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39 |
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40 <directive name="split_clients"> |
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41 <syntax block="yes"> |
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42 <value>string</value> |
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43 <value>$variable</value></syntax> |
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44 <default/> |
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45 <context>http</context> |
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parents:
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46 |
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parents:
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47 <para> |
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parents:
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48 Creates a variable for A/B testing, for example: |
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parents:
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49 <example> |
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50 split_clients "${remote_addr}AAA" $variant { |
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parents:
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51 0.5% .one; |
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52 2.0% .two; |
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53 * ""; |
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54 } |
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55 </example> |
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56 The value of the original string is hashed using MurmurHash2. |
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57 In the example given, hash values from 0 to 21474836 (0.5%) |
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58 correspond to the <var>$variant</var> variable taking the |
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59 value <literal>".one"</literal>, |
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60 hash values from 21474837 to 107374182 (2%) correspond to |
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61 the value <literal>".two"</literal>, |
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62 and hash values from 107374183 to 4294967297 correspond to |
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63 the value <literal>""</literal>. |
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64 </para> |
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65 |
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66 </directive> |
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67 |
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68 </section> |
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69 |
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70 </module> |