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Seeking nosql advice. I'd like a system that allowed for standing queries instead of synchronous queries. With mongo, if you want to know if something has chan
by cturner 16y ago
Seeking nosql advice. I'd like a system that allowed for standing queries instead of synchronous queries.
With mongo, if you want to know if something has changed, you send in a query.
I'd like to have a client subscribed to the db. Essentially, it's saying, "Whenever you get a dictionary that matches this query, send it through to me." It would hold this subscription over a standing socket connection.
Does anyone know of a system like this?
- arethuza 16y agoCouchDB has a changes API that can send notifications to a client of what has changed - you can restrict this to changes you are interested in by using filter functions, which are a bit like views. See: http://guide.couchdb.org/editions/1/en/notifications.html http://guide.couchdb.org/editions/1/en/notifications.html [NB I can't really compare this to any other NoSQL db - I've only used CouchDB, although in the past I have built various document oriented data stored, something that I've now stopped doing!].