Define a format to save data

[Bricklou]

To be able to store Minecraft world (and possibly additional data like plugins data, players inventory, etc.), a save format need to be defined.
To achieve this, maybe check how MongoDB, PostgreSQL, Scylladb or event WorldQL are able to store information on disk.

[Bricklou]

Solution found: the data will be stored in the same way Minecraft Bedrock does (with some adaptations)
Minecraft Bedrock use a custom version of LevelDB called LevelDB-MCPE.
Some work has to be done to enhance the overall, but it's a good starting point.

[Bricklou]

After some research, just LevelDB from Google should do the job to handle saves