Hi, is possible to Run JanusGraph/Cassandra/ElasticSearch in production in a VM with 8GB/RAM?

The system has more reads than writes, we create 10 vertex per hour and the system has a average of 20 concurrents users reading the database. Just an Category/User/Ads manager with only 300k or a little more vertex. And basic traversals.

Can i have some problems or its possible?

How can i determine if its possible? Thank you.