Continuous query with graph-oriented data model

[rico13]

Hi,

I am using Neo4j as long term data store and I would like to use Infinispan for a specific use case : subscriptions/notifications.

Users can ask to subscribe to a specific part of the graph, and whenever an entity/relation is created/updated/deleted, these users should be notified with the latest result.

I was thinking to use Infinispan continuous query feature for that : a user subscription corresponds to a continuous query, any change in the query result corresponds to a user notification.

As my data model (pojos) is graph-oriented, I would like to know if Infinispan is the right fit for my use-case, if my queries will stay performant as the in-memory graph data model is growing.

Thanks by advance.

[galder.zamarreno]

Does your model handle the possibility of a user receiving the same notification multiple times? IOW, are user notifications idempotent? In the presence of failure it is possible for the same event to be sent twice. This is a property of remote listeners and continuous queries (which are based in remote listeners).

[rico13]

Hi Galder,

this is not a problem for us if we receive the same notification twice.