[ghein]

I work on a graph focused firm, XN Logic, where we use an unhydrated graph to store and analyze the relations, the appropriate store for large volumes of information, and Datomic to store mutations for the graph for history analysis.

We use the PACER engine (https://github.com/pangloss/pacer ) to power queries.

This approach allows you to get the optimal performance and only reaching out to other systems when needed.