Hi! 2011-09-01 03:29, Linan Wang: > 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?
All modifying operations need to be performed inside a transaction. In most cases it makes sense to perform multiple operations in a single transaction. For example in a web application it may be a good fit to wrap the handling of one request in a transaction. So if a method doesn't start a transaction, it just means that it's handled at a higher level in the application. /anders > 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 > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user _______________________________________________ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
