Neo4j how to avoid supernodes

Question

In my Neo4j project I have Role and Permission entities which represent user roles and permissions. Each User in the system has relati

Answer 1

I'm going to assume that you're just using Neo4j as a permissions lookup data source (like hasPermission(current_user, 'permission_string')) and not tied into any queries to other entities. That can be fine, especially if you have a hierarchical access schema. If that's not true then this might not apply and it would be good to have a clearer idea of what your entities look like.

Since you're likely using permissions throughout your application it might and if they're going to grow in size and scope it could make sense for performance to use some form of caching like an in-memory store or in Redis, for example.

It might even make sense to generate a denormalized cache of every permission state for every user. So you would evaluate your rules which might be based on hierarchical roles/permissions and come out with a list of "User X has permission Y". Then whenever you change a user or a permission you'd regenerate the cache for that entity, and if you changed a role you would regenerate the cache for all of the associated users and permissions.

Also I don't know if I would apply this advice to just Neo4j. If you're talking about a simple key/value lookup then a lot of general purpose databases would be overkill in performance critical situations.