2009/12/26 Laurent Laborde <[email protected]>: > On Sat, Nov 21, 2009 at 11:35 AM, Laurent Laborde <[email protected]> wrote: >> >> My neo4j database won't be "critical" for the production, it can go >> down and/or crash at anytime without breaking the production platform. >> But... populating this database will take a lot of time and some >> usefull ressource. So i'll try to not break it by using a too unstable >> api :) >> >> I'm not 100% sure about the content of every node. But i think about a >> few GB at minimum... up to hundred's of GB. >> I'll see... it's a R&D project anyway. >> But if it perform well and efficiently (i mean : faster and cheaper in >> ressource than doing the same thing on our postresql cluster) the >> database could be well over 100GB, not including FTS index that i'm >> planning to use too :) >> >> I'm not 100% sure about what i'm doing here, that's all the fun of R&D. >> Be sure that you will have as much feedback as possible as long as it >> doesn't disclose the goals of the projects and the content of my >> database (NDA, etc ...) > > While i'm in vacation i have some times to play with neo. > After some cleaning and testing, i'm finally populating the database > with "real" data. > My code is not 100% fail-safe, but the program that populate the > database is running non-stop since 3 days, without a single error. > > The next step will be the exploitation of the content of the database. > Neoclipse gave up a long time ago, i am expecting around 20.000 nodes > and ... mmm... a million relationship (with different type) ? > > the database directory is currently 4.5GB ... i hope i didn't forgot a > transaction somewhere that wrap everything and will rollback ~4GB of > data if the program die :( > > i don't really understand the behaviour of the database if i have > nested transaction. > or what the database do if the program crash... it clean all > un-finished transaction from DB, right ? Read more about transactions in neo4j (and about nested transactions) here: http://wiki.neo4j.org/content/Neo_Transactions
yep any uncommitted transactions will be rolled back (not committed). Transactions which are half-way through the commit process will be fully committed if possible, else fully rolled back. > > Ho and ... Merry christmas :) Merry Christmas :) > > -- > Laurent "ker2x" Laborde > Sysadmin & DBA at http://www.over-blog.com/ > _______________________________________________ > Neo mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user > -- Mattias Persson, [[email protected]] Neo Technology, www.neotechnology.com _______________________________________________ Neo mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
