hi, got some questions not found simple answers from the documents. i bet some of them are pretty primitive, bear with me please.
1, what's the general rule for choosing properties or relationship? say a User lives in a City, which just contains a simple int id value. to find users live in a city, i can do a simple traversal, of all user nodes, or find the city node first, then collect all the users. seems to me both ways work and share same level of performance. (am i right here?) 2, does index operation add/remove/modify threadsafe, don't need lock/transaction? 3, does it simple property writing operations also need to be wrapped inside transaction? if so, in the imdb exmaple tutor/domain/MovieImpl.java underlyingNode.setProperty is used neither within transaction, nor put into a save method, do all setProperty works inside a transaction? 4, what's the best practice to do bulk insertion when running (not seed initial data)? i read post says that too many insertions within a transaction may lead to memory problem? what's the proper mount of insertion within a transaction? 5, is there a suggested max length for string/array property? would it be better to put into sql? 6, say a facebook user may "likes" thousands of things, and these things are sparsly connected. in this case, things should be modeled as nodes or array property? 7, where can i find an example to use domain models with serverplugin? i want to put my data in a standalone server and just use the serverplugin, unmanaged extension. should i just put the domain models into the same serverplugin jar? 8, the warning in the documentation about unmanaged extension is scary. what i can see is that people may use bad ways, instead of Iterator/IteratorWrappers. any comment on this? 9, i'm not sure if it's trival: find out users who are only 2 relationships a way (use twitter example: my followees' followers), live in same city, group by age and gender. also retrieve all their followees. i want to do the traversal in java, where can i find an examples? 10, i've had horrible experience in turning jvm options. have neo4j been running on Zing JVM, hp nonstop jvm? are they better options? thanks in advance Best regards Linan Wang _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
