Queries and Storage Questions

[MichelDiz]

@Emanuel

Can you confirm that Dgraph allows concurrent transactional queries and that queries can be parallelized?

All you need about this Releasing distributed transactions in v0.9 - Dgraph Blog
and Concurrent ACID Transactions in Badger - Dgraph Blog

@Emanuel

Is it true that Dgraph is geared more towards OLTP than OLAP, more interactive queries than analytics?

Not sure about this statement.

@Emanuel

I read that you use BadgerDB (key-value store). I assume that is how you store the vertices, however, edges are in RDF format (with properties, however). So do you have a separate RDF storage next to Badger?

RDF is just a standard (We use to write), all data is recorded in BadgerDB as KV.

@Emanuel

These are performance questions: Are edges stored with the vertex-data? Are the edge-properties stored with the edge data?

hmm, not sure how they’re stored.
But if you wanna know about some perf see Loading close to 1M edges/sec into Dgraph - Dgraph Blog (this is abour bulk only) and Badger vs LMDB vs BoltDB: Benchmarking key-value databases in Go - Dgraph Blog (this is about badger)

and there is Get started with Dgraph

Cheers.