Neo4j

michalkomorowsk · 01-07-2021

Context: We have users.Users can be members of groups.Groups belong to tenants.Tenants = business context.Tenants form a hierarchy. Query Now we have the following simplified query: PROFILE MATCH (u:User {Id: '<USER_ID>'})-[:MEMBER_OF]->(g:Group), (...

michalkomorowsk · 12-21-2020

I have a cluster consisting of 3 nodes of Neo4j 3.5. We are not in the production yet so for the vast majority of the time this cluster does nothing i.e. there are no writes and barely any reads. Despite this fact when I look at JVM Heap Size I obser...

michalkomorowsk · 09-29-2020

Hi, To be specific let's talk about the following simple example. We want to use Neo4j to model a survey system. Each survey consists of a set of questions and each question has only 2 answers i.e.: Yes and No. My idea is to model each question and e...

michalkomorowsk · 05-20-2020

According to my understanding when a new read-replica or a new core server is added to a healthy cluster they should start synchronization. This behaviour is described here: https://neo4j.com/docs/operations-manual/3.5/clustering-advanced/lifecycle/#...

michalkomorowsk · 04-29-2020

I know that there is an official Object Graph Mapper for Java. However, I haven't found anything official for .NET so I searched for solutions from the community and I found two: https://www.blueprint41.com/https://github.com/francnuec/Neo4jClient.D...

michalkomorowsk · 01-07-2021

I found out that described problem can be fixed by rewriting the query in the following way: MATCH (u:Usert {Id: '<USER_ID>'})-[:MEMBER_OF]->(g1:Group) WITH COLLECT(g1.Id) AS groups MATCH(t:Tenant)-[:CHILD_OF*0..5]->(root:Tenant)<-[:BELONGS]-(g2) WHE...

michalkomorowsk · 01-09-2020

@MuddyBootsCode, thanks for the quick response. Yes, in our case the context = just one property. However, this property is a kind of identifier. So method 2 will look as follows (:Node1)-[:ContextId1]->(:Node2) (:Node1)-[:ContextId2]->(:Node2) (:Nod...

Neo4j

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How to fix the un-optimal behavior of query engine

What does Neo4j do in the spare time?

When to share/reuse nodes and when not?

Catch up of a new read-replica or a core server does not work

Object Graph Mapper for .NET

Re: How to fix the un-optimal behavior of query engine

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