Main thread blocking for full server join bypass permission check

[Leymooo]

Type of bug

Performance issue or memory leak

/ess dump all output

idc

Error log (if applicable)

No response

Bug description

https://github.com/EssentialsX/Essentials/blob/2.x/Essentials/src/main/java/com/earth2me/essentials/perm/impl/LuckPermsHandler.java#L96

loadUser() always retvieves user from DataBase without any caching, you probaly want to use getUser() (get from cache if loaded) firstly and if null then loadUser(). At the context of PlayerServerFullCheckEvent, user should be always loaded.

Steps to reproduce

.

Expected behaviour

not blocking main thread

Actual behaviour

blocking main thread

Additional Information

No response

[Leymooo]

PlayerServerFullCheckEvent is called always for every login (called with isAllowed() == true) not only when server is full