Appendix B[ 277 ]RewriteRule ^/$ /homepage.min.html [L]RewriteRule ^/$ /homepage.std.html [L]This can be translated to an NGINX configuration as follows:
if ($http_user_agent ~* ^Mozilla) {rewrite ^/$ /homepage.max.html break;}if ($http_user_agent ~* ^Lynx) {rewrite ^/$ /homepage.min.html break;}index homepage.std.html;If there are any special variables that are available only under Apache's mod_rewrite,
then these of course can't be checked in NGINX.
Summary
We explored NGINX's rewrite module in this appendix. There are only a few
directives associated with the module, but these can be used to create some complex
configurations. Taking the process of creating new rewrite rules step-by-step has
hopefully demonstrated how rewrite rules can be made easily. An understanding
of regular expressions, how to read and construct them, is needed before creating
rewrite rules of any complexity. We rounded this appendix off by examining how
to translate Apache-style rewrite rules into a configuration that NGINX can parse.
In doing so, we discovered that quite a few Apache rewrite rule scenarios can be
solved differently in NGINX.