diff --git a/CommonCore/Data/src/de/steamwar/data/SyncCommands.java b/CommonCore/Data/src/de/steamwar/data/SyncCommands.java
new file mode 100644
index 00000000..b09665ec
--- /dev/null
+++ b/CommonCore/Data/src/de/steamwar/data/SyncCommands.java
@@ -0,0 +1,25 @@
+/*
+ *   This file is a part of the SteamWar software.
+ *
+ *   Copyright (C) 2025 SteamWar.de-Serverteam
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU Affero General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU Affero General Public License for more details.
+ *
+ *   You should have received a copy of the GNU Affero General Public License
+ *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.data;
+
+public class SyncCommands {
+    public static final String RELOAD_PLAYER = "reload_player";
+    public static final String RELOAD_EVENT = "reload_event";
+}
diff --git a/VelocityCore/src/de/steamwar/velocitycore/BackendSync.java b/VelocityCore/src/de/steamwar/velocitycore/BackendSync.java
new file mode 100644
index 00000000..146b6f87
--- /dev/null
+++ b/VelocityCore/src/de/steamwar/velocitycore/BackendSync.java
@@ -0,0 +1,96 @@
+/*
+ *   This file is a part of the SteamWar software.
+ *
+ *   Copyright (C) 2025 SteamWar.de-Serverteam
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU Affero General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU Affero General Public License for more details.
+ *
+ *   You should have received a copy of the GNU Affero General Public License
+ *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.velocitycore;
+
+import de.steamwar.data.SyncCommands;
+import de.steamwar.sql.Event;
+import de.steamwar.sql.EventFight;
+import de.steamwar.sql.SteamwarUser;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.*;
+
+public class BackendSync implements Runnable {
+    private static final Path syncPath = new File("/run/sync").toPath();
+    private final Thread thread;
+    private final WatchService watchService;
+
+    public BackendSync() {
+        try {
+            watchService
+                    = FileSystems.getDefault().newWatchService();
+        } catch (IOException e) {
+            throw new SecurityException("Could not create watch service", e);
+        }
+
+
+        thread = new Thread(this, "BackendSync");
+        thread.start();
+    }
+
+    public void stop() {
+        try {
+            watchService.close();
+            thread.join();
+        } catch (IOException | InterruptedException e) {
+            Thread.currentThread().interrupt();
+        }
+    }
+
+    private void handleCommand(String name) {
+        try {
+            String[] parts = name.split("\\.");
+
+            switch (parts[0]) {
+                case SyncCommands.RELOAD_EVENT -> EventFight.loadAllComingFights();
+                case SyncCommands.RELOAD_PLAYER -> SteamwarUser.invalidate(Integer.parseInt(parts[1]));
+                default -> VelocityCore.getLogger().warning("Unknown command: " + name);
+            }
+        } catch (Exception e) {
+            VelocityCore.getLogger().throwing(this.getClass().getName(), "handleCommand", e);
+        }
+    }
+
+    @Override
+    public void run() {
+        try {
+            syncPath.register(watchService,
+                    java.nio.file.StandardWatchEventKinds.ENTRY_CREATE);
+
+            WatchKey key;
+            while ((key = watchService.take()) != null) {
+                for (WatchEvent<?> event : key.pollEvents()) {
+                    String command = event.context().toString();
+                    handleCommand(command);
+
+                    if (!VelocityCore.get().getConfig().isEventmode()) {
+                        Path path = syncPath.resolve((Path) event.context());
+                        Files.delete(path);
+                    }
+                }
+            }
+        } catch (InterruptedException | ClosedWatchServiceException ignored) {
+            Thread.currentThread().interrupt();
+        } catch (Exception e) {
+            VelocityCore.getLogger().throwing(this.getClass().getName(), "run", e);
+        }
+    }
+}
diff --git a/VelocityCore/src/de/steamwar/velocitycore/VelocityCore.java b/VelocityCore/src/de/steamwar/velocitycore/VelocityCore.java
index aa98a034..9082f122 100644
--- a/VelocityCore/src/de/steamwar/velocitycore/VelocityCore.java
+++ b/VelocityCore/src/de/steamwar/velocitycore/VelocityCore.java
@@ -95,6 +95,7 @@ public class VelocityCore implements ReloadablePlugin {
     private Config config;
     private ErrorLogger errorLogger;
     private TablistManager tablistManager;
+    private BackendSync backendSync;
 
     @Getter
     private TeamCommand teamCommand;
@@ -147,6 +148,8 @@ public class VelocityCore implements ReloadablePlugin {
         new ReplayMod();
         new FML2();
 
+        backendSync = new BackendSync();
+
         new ConnectionListener();
         new ChatListener();
         new BanListener();
@@ -268,6 +271,8 @@ public class VelocityCore implements ReloadablePlugin {
             logger.log(Level.SEVERE, "Could not shutdown discord bot", e);
         }
 
+        backendSync.stop();
+
         if(tablistManager != null)
             tablistManager.disable();
         errorLogger.unregister();
diff --git a/WebsiteBackend/src/de/steamwar/data/VelocitySync.kt b/WebsiteBackend/src/de/steamwar/data/VelocitySync.kt
new file mode 100644
index 00000000..b3ea6f00
--- /dev/null
+++ b/WebsiteBackend/src/de/steamwar/data/VelocitySync.kt
@@ -0,0 +1,49 @@
+/*
+ *   This file is a part of the SteamWar software.
+ *
+ *   Copyright (C) 2025 SteamWar.de-Serverteam
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU Affero General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU Affero General Public License for more details.
+ *
+ *   You should have received a copy of the GNU Affero General Public License
+ *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.data
+
+import de.steamwar.sql.SteamwarUser
+import java.io.File
+import java.nio.file.Files
+
+object VelocitySync {
+    private const val SYNC_PATH = "/run/sync"
+    private val SYNC_FILE = File(SYNC_PATH)
+    private val isWindows = System.getProperty("os.name").lowercase().contains("win")
+    private val lastSendMap = mutableMapOf<String, Long>()
+
+    private fun sendCommand(command: String, vararg args: String) {
+        if (isWindows) { return }
+
+        val name = command + if (args.isNotEmpty()) "." + args.joinToString(".") else ""
+
+        if (lastSendMap[name] != null || lastSendMap[name]!! > System.currentTimeMillis() - 1000) {
+            return
+        }
+
+        lastSendMap[name] = System.currentTimeMillis()
+
+        Files.createFile(File(SYNC_FILE, name).toPath())
+    }
+
+    fun reloadEvent() = sendCommand(SyncCommands.RELOAD_EVENT)
+
+    fun reloadPlayer(user: SteamwarUser) = sendCommand(SyncCommands.RELOAD_PLAYER, user.id.toString())
+}
\ No newline at end of file
diff --git a/WebsiteBackend/src/de/steamwar/routes/EventFights.kt b/WebsiteBackend/src/de/steamwar/routes/EventFights.kt
index 2f27b7e4..453128b1 100644
--- a/WebsiteBackend/src/de/steamwar/routes/EventFights.kt
+++ b/WebsiteBackend/src/de/steamwar/routes/EventFights.kt
@@ -20,6 +20,7 @@
 package de.steamwar.routes
 
 import de.steamwar.ResponseError
+import de.steamwar.data.VelocitySync
 import de.steamwar.sql.*
 import io.ktor.http.*
 import io.ktor.server.application.*
@@ -112,6 +113,7 @@ fun Route.configureEventFightRoutes() {
             if (fight.group != null) {
                 eventFight.setGroup(fight.group)
             }
+            VelocitySync.reloadEvent()
             call.respond(HttpStatusCode.Created, ResponseEventFight(eventFight))
         }
         route("/{fight}") {
@@ -143,11 +145,13 @@ fun Route.configureEventFightRoutes() {
                 }
 
                 fight.update(start, spielmodus, map, teamBlue, teamRed, spectatePort)
+                VelocitySync.reloadEvent()
                 call.respond(HttpStatusCode.OK, ResponseEventFight(fight))
             }
             delete {
                 val fight = call.receiveFight() ?: return@delete
                 fight.delete()
+                VelocitySync.reloadEvent()
                 call.respond(HttpStatusCode.OK)
             }
 
diff --git a/WebsiteBackend/src/de/steamwar/routes/UserPerms.kt b/WebsiteBackend/src/de/steamwar/routes/UserPerms.kt
index c1558787..1ab68d59 100644
--- a/WebsiteBackend/src/de/steamwar/routes/UserPerms.kt
+++ b/WebsiteBackend/src/de/steamwar/routes/UserPerms.kt
@@ -19,6 +19,7 @@
 
 package de.steamwar.routes
 
+import de.steamwar.data.VelocitySync
 import de.steamwar.plugins.SWPermissionCheck
 import de.steamwar.plugins.getUser
 import de.steamwar.sql.SteamwarUser
@@ -86,6 +87,8 @@ fun Route.configureUserPerms() {
                 }
 
                 UserPerm.addPerm(user, UserPerm.entries.find { it == prefix }!!)
+
+                VelocitySync.reloadPlayer(user)
                 call.respond(HttpStatusCode.Accepted)
             }
             put("/{perm}") {
@@ -96,6 +99,8 @@ fun Route.configureUserPerms() {
                     call.respond(HttpStatusCode.Accepted)
                     return@put
                 }
+
+                VelocitySync.reloadPlayer(user)
                 call.respond(HttpStatusCode.NoContent)
             }
             delete("/{perm}") {
@@ -106,6 +111,8 @@ fun Route.configureUserPerms() {
                     call.respond(HttpStatusCode.Accepted)
                     return@delete
                 }
+
+                VelocitySync.reloadPlayer(user)
                 call.respond(HttpStatusCode.NoContent)
             }
         }