Okay so, every 30min my server freeze like just stop Ticking and stop answering commands etc... and this Also happens (sometimes) when it restart and unload the default level (which is an anvil level)
Happened to me also, curruptted chunks may lead to infinite loop without segfault letting your server freeze, try testing same thing on other server except reset worlds
Yes, peoples can see the server online and player counts but when they join it just say "Can't connect" and on the console nothing works not even stop command i can only seee peoples loggin out
well i did with the same plugin and it didn't happens so i was sure that it was worlds but did you fix them or something ?
Found something, hope it will work. https://github.com/Fenixin/Minecraft-Region-Fixer (My world format is anvil)
it's hard to get onto the bottom of freezes. Is the php process consuming 100% (or 1thread/core) during the freeze?
I think it is due to the reason you have to many plugins or to many of something. Do you ever get the message when it says the server is overloaded on console? It's usually yellow.