LRS choice

Hello Xerte community (and @Tom )
After the 2 presentations of Tom Reijnders during 2021 Xerte converence I am quite blown away by the (near) future options that will become available. Especially the dashboard application that will operate using Xerte, Moodle and an external LRS.
So today I started looking for a suitable open source LRS.
I know the Dashboard has been developed using Learning Locker as LRS. That's probably for a reason, because when I did my research even _finding_ an open source LRS was a challenge. And some LRS's claim to be open source, but I failed to find the package or code/repository.

One of the main reasons I was looking further than Learning Locker, is the used database engine in LL: mongoDB. My preference would be to use PostgresSQL or MySQL/mariaDB.
Anyone knows of an open source LRS that is using PostgreSQL or mysql/mariadb? This because there are already PostgreSQL and mariaDB modules for Nethserver. A MongoDB module would mean yet another DB... If there is no viable alternative for Learning Locker, then MongoDB will be added to the list..
Open source is important for me because I would like to build a complete package and incorporate it in NethServer. For NethServer there is already a module for Moodle, ( wiki.nethserver.org/doku.php?id=moodle ) and an install howto for Xerte ( community.nethserver.org/t/howto-install...ine-toolkits/10386/7 ).
Any advice and pointers on LRS choice is appreciated.


/edit:
Besides Learning Locker I found Lxhive: github.com/g3i/lxHive/wiki/Step-by-step:...ication-for-your-app
Anyone ever used this?

Hi Rob,

As xAPI data is basically JSON, almost all LRS's use a NoSQL database like MonoDB. The only one that I encountered that enables the use of MySQL or PrgresQL iis this project:

github.com/trax-project/trax-lrs

I've never used it though, so I don't know how well it performs etc.

Thanks for the pointer. I will give it a try and report back.