Hello, I am porting a project that uses Hibernate because of Amazon RDS, but now things are changing and I have a couple of questions:

1 - we need to use a key-value store db, like Amazon S3. After some research I found Infiniband, but I am not sure if "OGM+Infiniband = support S3". Can someone give me some input into this please?

2 - I also know that Hibernate OGM does not support all MySQL joins. Is there any documentation or anything else that can tell me which joins OGM actually supports and which doesn't?

Would really appreciate your support, Pedro.

Hi Pedro,

1 - I'm assuming you are talking about Infinispan: https://www.jboss.org/infinispan/
Infinispan is a key-value distributed NOSQL datastore and you can use it as you would use any implementation of the java.util.Map interface.
If your application uses hibernate you can use OGM to connect it to Infinispan as you would do with other relational databases.
You don't need OGM to use infinispan.
You will find a better description of infinispan in the documentation: https://docs.jboss.org/author/display/ISPN/Home

2 - Not sure what you mean with MySQL join, currently with OGM you can only execute simple queries (without JOIN) or full text queries. Details are explained in the documentation: https://docs.jboss.org/hibernate/ogm/4.0/reference/en-US/html/ogm-query.html

Cheers,
Davide

Assuming you mean OGM+Infinispan, yes Infinispan can be configured to store the data into Amazon S3:
https://docs.jboss.org/author/display/ISPN/Running+Infinispan+on+Amazon+Web+Services