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view xml/en/docs/faq/variables_in_config.xml @ 682:9d09ba854aeb
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author | Andrey Alexeev <andrew@nginx.com> |
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date | Mon, 17 Sep 2012 16:22:48 +0000 |
parents | 764fbac1b8b4 |
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<!-- Copyright (C) Nginx, Inc. --> <!DOCTYPE article SYSTEM "../../../../dtd/article.dtd"> <article name="Is there a proper way to use nginx variables to make sections of the configuration shorter, using them as macros for making parts of configuration work as templates?" link="/en/docs/faq/variables_in_config.html" lang="en" rev="1"> <section> <para> <initial>Q:</initial> Is there a proper way to use nginx variables to make sections of the configuration shorter, using them as macros for making parts of configuration work as templates? </para> <para> </para> <para> <initial>A:</initial> Variables should not be used as template macros. Variables are evaluated in the run-time during the processing of each request, so they are rather costly compared to plain static configuration. Using variables to store static strings is also a bad idea. Instead, a macro expansion and "include" directives should be used to generate configs more easily and it can be done with the external tools, e.g. sed + make or any other common template mechanism. </para> </section> </article>