Hello.
We have a problem with finding way to store user news list.
Our task - we have 2 group of filters:
1) News Types(photo, video, audio, etc... )
2) User Lists(user, friends, friends friends, etc..)
Our solution ways:
1) Store matrix of filters for each user.
UserNews:
user_id1:
<list_type1>: (date, uuid)
<list_type1>_<news_type1>: list(date, news_uuid)
<list_type1>_<news_type2>: list(date, news_uuid)
....
<list_typeN>: (date, uuid)
<list_typeN>_<news_type1>: list(date, news_uuid)
<list_typeN>_<news_type2>: list(date, news_uuid)
...
...
user_idN:
<list_type1>: (date, uuid)
<list_type1>_<news_type1>: list(date, news_uuid)
<list_type1>_<news_type2>: list(date, news_uuid)
....
<list_typeN>: (date, uuid)
<list_typeN>_<news_type1>: list(date, news_uuid)
<list_typeN>_<news_type2>: list(date, news_uuid)
...
Numbers of filters in this way more than 100..
2) Store news lists for each user in personal column family.
UserNews_<id>:
date_uuid:
<news_type> : indexed
<list_type> : indexed
<news_uuid>
In this case we have huge number of column families.
3) Store news lists in SQL Database and News in Cassandra.
4) Use Apache Lucene for indexes on filters.
Question: What of this ways is most optimal? Is there another ways of solutuion?
