Big players are catching up on the NoSQL market. On Oracle Corp. A new product description appeared - Oracle NoSQL database . While there is no documentation, the server itself (at least the community edition) is not, but it should appear "by mid-October."
But by the fact that already laid out, you can make a certain impression:
So: ')
Key-Value, nothing else, a set of operations is very simple - CRUD (create / read / update / delete)
Written in java
As a backend, apparently - berkeley db
Distributed, sharding + replication to write. and load balancing for reading.
Without single point of failure - that is, there is no such node whose death would lead to the entire cluster stopping
Customizable e ... "consistency" (how will it be in Russian? - a way to resolve conflicts?), None - time based - version based - absolute
Promise transactions, full ACID (!)
Designed for large volumes
web interface for administration
There are also some test results - on a cluster of 96 machines (3 replication groups) with 2 billion records, Yahoo! Cloud Serving Benchmark (YCSB) showed approximately 350,000 inserts per second. Or for a mixed load (50% read, 50% update) - about 55,000 operations per second.