It looks like database sharding is great if I have huge collections. What if I have lots of fairly sized collections ? Let's say that for 1 collection of 100 000 000 documents (not very big comments) ...
SQL Server and Oracle both have DENSE_RANK functions. Is there a way to do something similar in MongoDB without having to resort to MapReduce? In other words, suppose you have a T-SQL select clause ...
What are the best resources for learning how to operate and administer MongoDB? There are plenty of resources on developing against it - which actually creates a problem when you've got plenty of ...
Evaluating document-oriented storage, what are the pros and cons of CouchDB vs MongoDB?