Mercurial > hg > nginx-site
comparison xml/en/docs/http/ngx_http_map_module.xml @ 714:ec33576efaa5
Added note about minimal impact of declaring multiple variables (geo, map).
| author | Vladimir Homutov <vl@nginx.com> |
|---|---|
| date | Tue, 09 Oct 2012 12:39:31 +0000 |
| parents | 77a3314c74a7 |
| children | 81ec181c084e |
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| 713:1de09d81acd1 | 714:ec33576efaa5 |
|---|---|
| 63 depends on values of one or more of the source variables | 63 depends on values of one or more of the source variables |
| 64 specified in the first parameter. | 64 specified in the first parameter. |
| 65 <note> | 65 <note> |
| 66 Before version 0.9.0 only a single variable could be | 66 Before version 0.9.0 only a single variable could be |
| 67 specified in the first parameter. | 67 specified in the first parameter. |
| 68 </note> | |
| 69 </para> | |
| 70 | |
| 71 <para> | |
| 72 <note> | |
| 73 Since variables are evaluated only when used, the mere existence | |
| 74 of even a large number of declared “<literal>map</literal>” variables | |
| 75 does not incur any extra costs for request processing. | |
| 68 </note> | 76 </note> |
| 69 </para> | 77 </para> |
| 70 | 78 |
| 71 <para> | 79 <para> |
| 72 Parameters inside the <literal>map</literal> block specify a mapping | 80 Parameters inside the <literal>map</literal> block specify a mapping |