Introduction ActsAsReadonlyable adds support of multiple read-only slave databases to ActiveRecord models. When a model is marked with acts_as_readonlyable, some of AR finders are overridden to run against a slave DB. The supported finders are find, find_by_sql, count_by_sql, find_[all_]by_*, and reload. Finders can be forced to fall back to a default DB by passing the :readonly flag set to false.