Mercurial > hg > nginx-site
annotate xml/en/docs/faq/variables_in_config.xml @ 196:aafe530e7d6f
- Added faq/ and more q&a as previously agreed
author | Andrey Alexeev <andrew@nginx.com> |
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date | Wed, 23 Nov 2011 15:32:04 +0000 |
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children | ec4626d04879 |
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1 <!DOCTYPE article SYSTEM "../../../dtd/article.dtd"> |
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2 |
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3 <article name="Is there a proper way to use nginx variables to |
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4 make sections of the configuration shorter, |
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5 using them as macros for making |
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6 parts of configuration work as templates?" |
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7 link="/en/docs/faq/variables_in_config.html" |
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8 lang="en"> |
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9 |
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10 <section> |
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11 |
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12 <para> |
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13 <initial>Q:</initial> |
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14 Is there a proper way to use nginx variables to make sections of |
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15 the configuration shorter, using them as macros for making |
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16 parts of configuration work as templates? |
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17 </para> |
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18 |
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19 <para> |
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20 |
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21 </para> |
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22 |
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23 <para> |
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24 <initial>A:</initial> |
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25 Variables should not be used as template macros. Variables are |
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26 evaluated in the run-time during the processing of each |
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27 request, so they are rather costly compared to plain static |
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28 configuration. Using variables to store static strings is also |
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29 a bad idea. Instead, a macro expansion should be used to |
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30 generate configs more easily and it can be done with the |
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31 external tools, e.g. sed + make or any other common template |
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32 mechanism. |
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33 </para> |
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34 |
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35 </section> |
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36 |
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37 </article> |