diff --git a/src/de/warking/hunjy/Core.java b/src/de/warking/hunjy/Core.java
index 60df0d5..61b466d 100644
--- a/src/de/warking/hunjy/Core.java
+++ b/src/de/warking/hunjy/Core.java
@@ -2,6 +2,10 @@ package de.warking.hunjy;
 
 import java.util.UUID;
 
+import com.sun.net.httpserver.BasicAuthenticator;
+import de.warking.hunjy.MySQL.Bauwelt;
+import de.warking.hunjy.MySQL.BauweltMember;
+import de.warking.hunjy.MySQL.WarkingUser;
 import de.warking.hunjy.PlayerManager.PlayerManager;
 import de.warking.hunjy.PlayerManager.events.ChattingEvent;
 import de.warking.hunjy.PlayerManager.events.PlayerJoin;
@@ -54,6 +58,12 @@ public class Core extends JavaPlugin{
 		
 		Bukkit.getPluginManager().registerEvents(new PlayerJoin(), this);
 		Bukkit.getPluginManager().registerEvents(new ChattingEvent(), this);
+
+		Bukkit.getScheduler().runTaskTimer(this, () -> {
+			WarkingUser.clearCache();
+			Bauwelt.clearCache();
+			BauweltMember.clearCache();
+		}, 72000, 72000);
 	}
 	
 	public static Core getInstance() {
diff --git a/src/de/warking/hunjy/MySQL/Bauwelt.java b/src/de/warking/hunjy/MySQL/Bauwelt.java
index 2fd727f..3af9868 100644
--- a/src/de/warking/hunjy/MySQL/Bauwelt.java
+++ b/src/de/warking/hunjy/MySQL/Bauwelt.java
@@ -2,6 +2,8 @@ package de.warking.hunjy.MySQL;
 
 import java.sql.ResultSet;
 import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.UUID;
 
 import static de.warking.hunjy.Core.sql;
@@ -11,11 +13,13 @@ public class Bauwelt {
 	private final int UserID;
 	private boolean TNTDmg;
 	private boolean FireDmg;
+	private static final List<Bauwelt> bauweltCache = new ArrayList<>();
 
 	private Bauwelt(int userID, boolean tntDmg, boolean fireDmg, boolean updateDB){
 		UserID = userID;
 		TNTDmg = tntDmg;
 		FireDmg = fireDmg;
+		bauweltCache.add(this);
 		if(updateDB)
 			updateDB();
 	}
@@ -42,6 +46,9 @@ public class Bauwelt {
 	}
 
 	public static Bauwelt getBauwelt(int userId){
+		for(Bauwelt b : bauweltCache)
+			if(b.UserID == userId)
+				return b;
 		ResultSet bauwelt = sql.select("SELECT * FROM Bauwelt WHERE UserID = '" + userId + "'");
 		try {
 			if(bauwelt == null || !bauwelt.next()){
@@ -81,4 +88,8 @@ public class Bauwelt {
 		FireDmg = fireDmg;
 		updateDB();
 	}
+
+	public static void clearCache(){
+		bauweltCache.clear();
+	}
 }
diff --git a/src/de/warking/hunjy/MySQL/BauweltMember.java b/src/de/warking/hunjy/MySQL/BauweltMember.java
index d357cfa..263e0fd 100644
--- a/src/de/warking/hunjy/MySQL/BauweltMember.java
+++ b/src/de/warking/hunjy/MySQL/BauweltMember.java
@@ -17,6 +17,8 @@ public class BauweltMember{
 	private boolean WorldEdit;
 	private boolean Testblock;
 
+	private static List<BauweltMember> memberCache = new ArrayList<>();
+
 	private BauweltMember(int bauweltID, int memberID, boolean build, boolean changeGM, boolean teleport, boolean worldEdit, boolean testblock, boolean updateDB){
 		BauweltID = bauweltID;
 		MemberID = memberID;
@@ -25,6 +27,7 @@ public class BauweltMember{
 		Teleport = teleport;
 		WorldEdit = worldEdit;
 		Testblock = testblock;
+		memberCache.add(this);
 		if(updateDB)
 			updateDB();
 	}
@@ -144,4 +147,8 @@ public class BauweltMember{
 		Testblock = testblock;
 		updateDB();
 	}
+
+	public static void clearCache(){
+		memberCache.clear();
+	}
 }
diff --git a/src/de/warking/hunjy/MySQL/WarkingUser.java b/src/de/warking/hunjy/MySQL/WarkingUser.java
index 32af1f0..c2c5360 100644
--- a/src/de/warking/hunjy/MySQL/WarkingUser.java
+++ b/src/de/warking/hunjy/MySQL/WarkingUser.java
@@ -90,11 +90,7 @@ public class WarkingUser {
 		return offline;
 	}
 
-	public static void remove(Player player){
-		for(int i = 0; i < allUsers.size(); i++)
-			if(allUsers.get(i).UUID.equals(player.getUniqueId())){
-				allUsers.remove(i);
-				return;
-			}
+	public static void clearCache(){
+		allUsers.clear();
 	}
 }
diff --git a/src/de/warking/hunjy/PlayerManager/events/PlayerJoin.java b/src/de/warking/hunjy/PlayerManager/events/PlayerJoin.java
index 826d354..2714643 100644
--- a/src/de/warking/hunjy/PlayerManager/events/PlayerJoin.java
+++ b/src/de/warking/hunjy/PlayerManager/events/PlayerJoin.java
@@ -50,7 +50,6 @@ public class PlayerJoin implements Listener{
 	@EventHandler
 	private void onQuit(PlayerQuitEvent event) {
 		Player player = event.getPlayer();
-		WarkingUser.remove(player);
 
 		event.setQuitMessage("§c§l« §r" + player.getDisplayName());
 	}