Hi! >> 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?
Seems like the node and index modifications belong in the same transaction, to make sure any modifications to nodes are always reflected in the indexes as well. Otherwise they could get out of sync if your application crashes after the commit of the first, node-modifying transaction. /anders >> >> >> /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 >> > > > _______________________________________________ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
