No replication

It is possible to use AutoSlave for one db server (i.e. not using replication).
The reason for doing this, is that AutoSlave provides the transactional safe cache backend.

<?php
$databases['default']['master'] = array (
  'database' => 'mydatabase',
  'username' => 'readwrite',
  'password' => 'readwrite',
  'host' => 'master1',
  'port' => '',
  'driver' => 'mysql',
  'prefix' => '',
);
$databases['default']['default'] = array (
  'driver' => 'autoslave',
  'master' => array('master'),
  'slave' => array('master'),
  'replication lag' => 0,
  'global replication lag' => FALSE,
);

// Load cache backends
$conf['cache_backends'] = array(
  'sites/all/modules/memcache/memcache.inc',
  'sites/all/modules/autoslave/autoslave.cache.inc',
);


else {
  // Transactional safe memcache
  $conf['cache_default_class'] = 'AutoslaveCache';
  $conf['autoslave_cache_default_class'] = 'MemCacheDrupal';
}
?>