For a look at real-time stream computation with Storm, Neo4j, and Python, check out this talk from Sonal Raj at PyCon India 2013. The talk covers a lot of ground, comparing Storm with Hadoop, explaining the use of Neo4j, working with Python, and more.
This talk briefly outlines the Storm framework and Neo4J graph database, and how to compositely use them to perform computations on complex graphs in Python using the Petrel and Py2neo packages. This talk was given at PyCon India 2013. - from sonal-raj on SlideShare