Hi anders, thanks for the clarification. On Fri, Sep 2, 2011 at 8:32 AM, Anders Nawroth <[email protected]> wrote: > 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. got this part. then do you suggest to leave indexing action outside of node operation? say i have a domain model and it handles indexing actions along with underlying nodes modification, then in an web app, should I wrap only nodes operations inside transaction and do indexing only after it success? > > > /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 >> [email protected] >> https://lists.neo4j.org/mailman/listinfo/user > _______________________________________________ > Neo4j mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user >
-- Best regards Linan Wang _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
