We are currently working with a Neo4j database, and we need some kind of id to identify nodes.
For example we have functions like CurrentUserHasAccess(NodeId)
On other Stackoverflow posts I read that it's a bad idea to use the internal neo4j-identifier, because it can change over time. However I think that's not an issue when we do not use this id to link data.
However I cannot seem to find any official sources about this topic.
I would like to use this ID because then we do not need to worry about uniqueness, and more importantly indexing.
You are right that it is generally not recommended to use the internal Neo4j node IDs. This is mainly because if a node gets deleted, its original internal ID may get recycled/reused. If you're looking for a quick and elegant solution to this, have a look at the UUID module of the GraphAware Framework here https://github.com/graphaware/neo4j-uuid and let us know if it works for you.