I have an idea but not sure it is good or not (i am not very familiar with
rails internal architecture details yet).
Recently I got interested in Cassandra DB("no sql" db). It has
it's uses.
( I am not in any way related to Cassandra team or Datastax)
And I thought, wouldn't it be cool to use Cassandra in the same way we use
other dbs supported by ActiveRecord.
Cassandra uses CQL language (Cassandra Query Language). CQL is similar to
SQL with some additional features and some limitations.
I checked Arel gem. And it looks to me that it will not be hard to make it
work with CQL as well. Some nodes should be added like TTL (time to live) -
really nice feature of Cassandra. Other some nodes probably will do nothing
in case of CQL.
So idea is next:
+ To add support of CQL in Arel. Probably joins are also possible but with
two queries (probably in one cassandra batch?)
+ Make ActiveRecord to support Arel's new features like ttl.
+ World is moving to using different databases for different purposes in
the same project. So maybe it is not bad idea to make rails support SQL
database and CQL database simultaneously?
I am not sure those are good ideas, so could you please share your thoughts
about it?
If idea is good enough I can implement it (using cql-rb driver, arel,
active_record).
Thank you
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