I feel that when you add an attribute it should be persistent after a server restart.
After testing this is not currently the case. 
Persistent Attributes
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- English
- yahwho
- Thread is Unresolved
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Yes. is persistent only during session. If want to make permanent i think must save them into db and restore on player connect. This if is a attribute of a player ...
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This is NPC attributes. I don't really want to have to save them manually lol
Edit: I mean, I have to save them manually, why bother with attributes in the first place?
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Attributes are indeed only valid during the session. Right now it's more meant to be a convenient way to store temporary per-instance data (and possibly share it between plugins)... in fact it wouldn't be easy to make them persistent - right now it's possible to store any object as attribute (this could be a reference to another class, e.g a UI element, or just a primitive data type), but we could only store primitive data types persistently (no way to store and recover that properly).
We could think about adding a way to store separate, persistent attributes, but that would be limited to serializable data only (e.g. primitive data types, strings, vectors etc). Custom objects could only be stored if they implement the serializable interface (but no way to store API objects, like players, UI elements etc). It would be a separate API then, like setPersistentAttribute(), getPersistentAttribute() etc.
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