As you know that our project is defined as:
"*The Apache Gora™ open source framework provides an in-memory data model
and persistence for big data.*"
I believe that Apache Gora is a special project and it touches many
projects. I always wonder the performance of NoSQL DBs as individual and
accessed via Apache Gora.
I think that we should make a benchmark and publish it, and Yahoo!’s Cloud
Serving Benchmark (YCSB)  is the most suitable tool for such a purpose.
I found a recent research about Object-NoSQL Database Mapper (ONDM)
benchmark  which includes Apache Gora and they have produced the
benchmark source code as ASF 2.0 licensed .
Here is an example from Apache Accumulo which is based on YCSB too .
What do you think about it? Who wants to join that work apart from me?
 Cooper BF, Silberstein A, Tam E, Ramakrishnan R, Sears R. Benchmarking
cloud serving systems with YCSB. In: Proceedings of the 1st ACM symposium
on Cloud computing - SoCC ’10. Association for Computing Machinery (ACM):
2010. p. 143–154, doi:10.1145/1807128.1807152.http://dx.doi.org/10.1145/1807128.1807152