1 Introduction to vmod-dbrw
Vmod-dbrw is a module for
Varnish Cache1
which implements database-driven rewrite rules. These rules may be
similar to RewriteRule directives implemented by
mod_rewrite2
module in Apache or to Redirect directives of its
mod_alias module. What distinguishes the
vmod-dbrw rules from these, is that they are handled by
Varnish, before the request reaches the httpd server, and
that they are stored in an SQL database, which makes them easily
manageable.
Some web sites implement thousands of rewrite rules. The purpose of this module is to facilitate deploying and handling them.
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