Apache HTTP Server Version 2.4
Apache HTTP Server Version 2.4
| Description: | User authentication using an SQL database |
|---|---|
| Status: | Extension |
| Module Identifier: | authn_dbd_module |
| Source File: | mod_authn_dbd.c |
| Compatibility: | Available in Apache 2.1 and later |
This module provides authentication front-ends such as
mod_auth_digest and mod_auth_basic
to authenticate users by looking up users in SQL tables.
Similar functionality is provided by, for example,
mod_authn_file.
This module relies on mod_dbd to specify
the backend database driver and connection parameters, and
manage the database connections.
When using mod_auth_basic or
mod_auth_digest, this module is invoked via the
AuthBasicProvider or
AuthDigestProvider
with the dbd value.
Some users of DBD authentication in HTTPD 2.2/2.4 have reported that it
imposes a problematic load on the database. This is most likely where
an HTML page contains hundreds of objects (e.g. images, scripts, etc)
each of which requires authentication. Users affected (or concerned)
by this kind of problem should use mod_authn_socache
to cache credentials and take most of the load off the database.
