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comparison xml/en/docs/faq/variables_in_config.xml @ 198:ec4626d04879

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- Bulk commit following discussion in devrep
author Andrey Alexeev <andrew@nginx.com>
date Wed, 23 Nov 2011 16:31:50 +0000
parents aafe530e7d6f
children be54c443235a
comparison
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197:241c9db1f3f4 198:ec4626d04879
1 <!DOCTYPE article SYSTEM "../../../dtd/article.dtd"> 1 <!DOCTYPE article SYSTEM "../../../../dtd/article.dtd">
2 2
3 <article name="Is there a proper way to use nginx variables to 3 <article name="Is there a proper way to use nginx variables to
4 make sections of the configuration shorter, 4 make sections of the configuration shorter,
5 using them as macros for making 5 using them as macros for making
6 parts of configuration work as templates?" 6 parts of configuration work as templates?"
24 <initial>A:</initial> 24 <initial>A:</initial>
25 Variables should not be used as template macros. Variables are 25 Variables should not be used as template macros. Variables are
26 evaluated in the run-time during the processing of each 26 evaluated in the run-time during the processing of each
27 request, so they are rather costly compared to plain static 27 request, so they are rather costly compared to plain static
28 configuration. Using variables to store static strings is also 28 configuration. Using variables to store static strings is also
29 a bad idea. Instead, a macro expansion should be used to 29 a bad idea. Instead, a macro expansion and "include" directives
30 generate configs more easily and it can be done with the 30 should be used to generate configs more easily and it can be
31 external tools, e.g. sed + make or any other common template 31 done with the external tools, e.g. sed + make or any other
32 mechanism. 32 common template mechanism.
33 </para> 33 </para>
34 34
35 </section> 35 </section>
36 36
37 </article> 37 </article>