Hi,
This will depend on types of queries, access patterns and what the
data look like. Could you provide some more information on what the
data look like, specifically relationships traversed and properties
loaded for a query?
Regarding adding another machine to an already active cluster it is
Hello,
I am testing Neo4j Entreprise and I want to use the Meta Model API for
building and querying my data meta model. I realize that this API (
Meta Model API) is only used on embedded graph database. Please, could
someone tell me a way to build and query meta model in Neo4j Server
which
Kobla,
for this, I think the best option would be to build your own Server
Plugins and expose the Meta Model functionality you need as REST
endpoint on the GraphDatabase representation (/db/data/), see
http://docs.neo4j.org/chunked/snapshot/server-plugins.html
This works even with the HA options
Andreas,
welcome to the GSoC - Craig, Jody and me are superthrilled to get
going on this! Keep the list updated on any issues you are
encountering while getting up to speed so we all can try to make the
ride as smooth as possible.
Cheers,
/peter neubauer
GTalk: neubauer.peter
Skype
Hi, Niels.
That's what we're doing now, but it has performance issues with large #'s of
relationships when cars are constantly being added, since the color nodes
become synchronization bottlenecks for updates.
Rick
From: user-boun...@lists.neo4j.org
Perhaps then it is sensible to introduce a second layer of nodes, so that you
split down your supernodes and distribute the write contention?
Would be interesting if putting a round robin on that second level of color
nodes would be enough to spread lock contention?
This is what peter talks
Have you thought about using the in-graph Timeline index for this? Make each
color node the root of a Timeline and add the car nodes as entries to that
index. This may reduce your synchronization problems and is something you can
probably test without having to make too much of an investment.
Thinking back you your original domain description, cars with colors, surely
you have more properties than just colors to index?
If you have two or more properties, then you use combinations of properties
for the first level of the index tree, which provides your logical
partitioning of
Hi all,
I have applied to FOSS4G to talk about Geoprocessing with Neo4j Spatial and
OSM. This talk will include the new work we've done on the open street map
model. In addition, we got two GSoC students this year, on related projects
OSM Editor and Geoprocessing with OSM, and so they are likely
Ah, if only it were so...
The number of indexable properties (tags) is completely variable on a per car
basis (e.g. I can add a driverMood tag for just a subset of cars) - meaning
that the domain objects themselves can have a variable number of tags and can
indeed even be tagged with two
I have read through the Getting Started on Neo4j this morning.
I understood that this a graphical database representation of our data.
But its very hard to imagine in terms of our Application. So where does the
data stay lets just say we have Customers and Orders like your example where
does all
Hello,
Neo4j is a database + API. Thus, Neo4j will persist your data for you (in a
directory) and will expose that data logically as a graph for you (JavaDoc API).
Neo4j is NOT a graph API over an existing database (e.g. MySQL).
Hope that helps,
Marko.
http://markorodriguez.com
On May 2,
Thanks that is a pretty quick reply i appreciate your response that helps my
understanding.
And so now I'm trying the example in the Design Guide section. But it asks
me to create the RelationShipTypes by following the instructions in Getting
started but its not that clear.
And moreover where do
Hey,
Are you a Java developer? Simply start playing around as such:
GraphDatabaseService graph = new EmbeddedGraphDatabase( var/graphdb );
Node a = graph.createNode();
a.setProperty(name, marko);
Node b = graph.createNode()
b.setProperty(name, gold plated rocket car);
Relationship r =
http://www.cs.usfca.edu/~galles/visualization/Algorithms.html
Nicely done, runs in the browser, perhaps useful for explaining stuff to people.
Cheers
Michael
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Please don't confuse a graph data structure with a visual graphical
representation, graphical can mean anything.
Graphs are nodes and relationships to other nodes which all can have
relationships.
For you as a Java developer it is perhaps easiest to imagine those as object
networks.
This is really very interesting... thanks a lot i will keep trying different
things out
On Mon, May 2, 2011 at 1:15 PM, Michael Hunger
michael.hun...@neotechnology.com wrote:
Please don't confuse a graph data structure with a visual graphical
representation, graphical can mean anything.
Johan,
Thanks for your answer.
The graph represents a social network, where users are friends of other
users (followers and following). Each node has a name and is connected to
other users (his friends), so the relationship is
user-is-a-friend-of-another-user. Each relationship has a nickname,
Dima,
do you have from your current data a distribution curve of friends per user ?
That determines the # of relationships per graph. E.g. when each user has about
50 friends (unidirectional) in average, that makes 100 billion relationships in
the graph.
So, not the # of nodes is the limiting
Hi Jake,
The short answer to should we? is right in the neo4j REST API
documentation: The query syntax used here depends on what index provider
you chose when you created the index.
Since the provider is discoverable via the REST API, the client app can
decide if it speaks that provider's query
Congratulations Mirco. I look forward to hearing more about how your project
progresses over the course of the summer.
Tim McNamara | @timClicks http://twitter.com/timClicks |
timmcnamara.co.nz
On 3 May 2011 10:24, Mirco Franzago mircofranz...@gmail.com wrote:
Hi All,
I am Mirco
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