// $Id: README.txt,v 1.3 2010-04-01 16:17:33 chx Exp $

Configuration
=============

MongoDB uses two variables (somewhat similar to the memcached module).

The mongodb_connections variable is an associative array. The keys are
what I will call aliases, the values are associative arrays again, with two
keys, host and db. Example:

$conf['mongodb_connections'] = array(
  'logginghost' => array('host' => 'log.local', 'db' => 'drupalogs'),
);

The 'default' alias is special, if it's not defined then 
'default' => array('host' => 'localhost', 'db' => 'drupal') is added
automatically.

Then mongodb_collections will allow mapping collections to aliases:

$conf['mongodb_collections'] = array(
  'watchdog' => 'logginghost',
)

If a collection has no alias specified in 'mongodb_collections', then the 
alias 'default' is used (as noted above, the 'default' connection alias
always exists.) If you want everything in one database, then there is no need
to set up mongodb_collections. So for exampple, if no variables are defined at
all, then MongoDB writes everything in the drupal database on localhost.

mongodb_block uses the 'block' collection, mongodb_cache uses the name of the
bin (cache_bootstrap, cache_menu etc), mongodb_session uses 'session' and
mongodb_watchdog is configurable but by default it uses 'watchdog'.
mongodb_field_storage uses collections like fields_current.node,
fields_current.taxonomy_term, fields_revision.user... the dot is allowed in
the name of mongodb collections. Before the dot it uses fields_current or
fields_revision and puts the entity type after.