# $name is somehow derived from the object value we're storing.  The
# details of that are (probably) unimportant.
$name = $key_obj->derive_name($obj);

# insert to cache:
$cache{$name} = $obj->value();

# insert to cache with possible collision:
$cache{$key_obj->object_ID() . $name} = $obj->value();

# remove from cache:
$value = $cache{$name};

# remove from cache with possible collision:
$value = $cache{$key_obj->object_ID() . $name};

##</code><code>##

# The name is keyed to the object we're using so if we have two different
# types of objects with the same ID, we can differentiate.

# insert to cache:
$cache->insert(tag => ref $key_obj . $key_obj->object_ID(), data => $obj->value());

# remove from cache:
@values = $cache->retrieve(tag => ref $key_obj . $key_obj->object_ID());