Strategies for Real-Time Aggregations in MongoDB

Question

In exploring ways to do real-time analytics with MongoDB, there seems to be a fairly standard way to do sums, but nothing in terms of more complex aggregation. Some things that

Answer 1

There is work planned for the upcoming 1.9.x unstable release that may have aggregations.

See: https://jira.mongodb.org/browse/SERVER-447

Of course, it may get bumepd to a later release/