ArangoDB Closes 2.2M Euro Investment Led by Target Partners

Awesome news! Did not know know about this new investment as a remote-working member of the team until now. Looking forward to the future, what we can achieve in the coming months.

Why will ArangoDB succeed where RethinkDB failed commercially? Can't see any mention of changefeeds on the Arango website, which is the killer Rethink feature for me.

ArangoDB is a multi model store, which is to say it lets you store key value pairs, json documents, and graphs. (Edges are just another document with two special fields: "_from" and "_to".

My team just spent 3 weeks investigating document stores and ultimately settled on arangoDB because: 1. Graph functionality, 2. Read after write consistency, 3. Partial updates, 4. Efficient joins across shards, 5. The (limited) text search features, 6. AQL is just pretty sweet. There was a whole spreadsheet matrix but that's what I can remember without pulling it up.

We really liked RethinkDB for its change feeds. We are probably going to use Elastic for search, because we want to expose Lucene to our users, so we'll probably have to write some foxx endpoints to manage the data replication. I like the idea of foxx but really hate that it's JavaScript based. I'm planning on looking into using ScalaJS if possible.

I have not used Arango in production although I evaluated it and exchanged a few emails with Claudius.

I see a number of reasons why ArangoDB might be more interesting than Rethink:

1) Arango is a multi model database with graph, noSQL, and key-value pairs. Even if Rethink has joins and complex queries, it will never be as flexible for general data modelling.

2) Foxx is a logical layer on top of the database. While it's limited compared to a classic server side application it offers way more flexibility than Rethink could ever.

3) Arango (or Foxx) don't offer realtime data like Rethink or Firebase, but quite frankly there are few cases where such feature is needed.

On our project we are probably going to use DreamFactory instead of Arango because we are more comfortable with SQL dbs and it has a number of other valuable features over Arango.

Thanks! Are there any other noteworthy realtime DBs like Rethink and Firebase?