NoSQL Database
- RethinkDB (http://www.rethinkdb.com/)
- MongoDB
- RavenDB
When is NoSql database not a good choice?
- If you need full ACID support or strong schema enforcement — in this case you are better off using a relational database such as MySQL or PostgreSQL.
- If you are doing deep, computationally-intensive analytics you are better off using a system like Hadoop or a column-oriented store like Vertica.
- If you absolutely need high write availability and do not mind dealing with conflicts, you may be better off with a Dynamo-style system like Riak.
