gem install rails --version=4.0.13
DynamoDB schema:
category: id(hash)
forum: category(hash, category_id), id(range), forum_name(string)
local secondary index: forum_name(string)
topic:
forum(hash, forum_id) id(range) subject(string)
local secondary index: last_post_at(int)
post:
topic(hash, topic_id) id(range) updated_at(int)
local secondary index: updated_at(int)
view:
user(hash), id(range, string, "viewable_type#viewable_id")
viewable_id(int, topic_id or forum_id) viewable_type(string, i.e. table_name, e.g. 'topics' or 'forums')
group: id(hash), name(string)
membership: group_id(hash), user_id(range)
moderator_group: forum(hash, forum_id), group(range, group_id)
subscription: topic(hash, topic_id), user_id(range)
favorite_forums: user_id(hash), id(range, string), category(string), forum (string)
favorite_topics: user_id(hash), id(range, string), forum (string), topic (string)