diff --git a/core/src/main/java/net/momirealms/craftengine/core/block/AbstractBlockManager.java b/core/src/main/java/net/momirealms/craftengine/core/block/AbstractBlockManager.java
index f39da7dd4..870971aac 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/block/AbstractBlockManager.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/block/AbstractBlockManager.java
@@ -363,15 +363,17 @@ public abstract class AbstractBlockManager extends AbstractModelGenerator implem
             } catch (IOException e) {
                 AbstractBlockManager.this.plugin.logger().warn("Error while loading custom block states allocation cache", e);
             }
-            for (PendingConfigSection section : this.pendingConfigSections) {
-                ResourceConfigUtils.runCatching(
-                        section.path(),
-                        section.node(),
-                        () -> parseSection(section.pack(), section.path(), section.node(), section.id(), section.config()),
-                        () -> GsonHelper.get().toJson(section.config())
-                );
+            if (!this.pendingConfigSections.isEmpty()) {
+                for (PendingConfigSection section : this.pendingConfigSections) {
+                    ResourceConfigUtils.runCatching(
+                            section.path(),
+                            section.node(),
+                            () -> parseSection(section.pack(), section.path(), section.node(), section.id(), section.config()),
+                            () -> GsonHelper.get().toJson(section.config())
+                    );
+                }
+                this.pendingConfigSections.clear();
             }
-            this.pendingConfigSections.clear();
         }
 
         @Override
diff --git a/core/src/main/java/net/momirealms/craftengine/core/pack/allocator/IdAllocator.java b/core/src/main/java/net/momirealms/craftengine/core/pack/allocator/IdAllocator.java
index 3a42d71ed..0386d525c 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/pack/allocator/IdAllocator.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/pack/allocator/IdAllocator.java
@@ -19,14 +19,18 @@ import java.util.function.Predicate;
 public class IdAllocator {
     private final Path cacheFilePath;
     private final BiMap<String, Integer> forcedIdMap = HashBiMap.create(128);
-    private final Map<String, Integer> cachedIdMap = new HashMap<>();
     private final BitSet occupiedIdSet = new BitSet();
     private final Map<String, CompletableFuture<Integer>> pendingAllocations = new LinkedHashMap<>();
+    private final Map<String, Integer> cachedIdMap = new HashMap<>();
+
+    private long lastModified;
 
     private int nextAutoId;
     private int minId;
     private int maxId;
 
+    private boolean dirty;
+
     public IdAllocator(Path cacheFilePath) {
         this.cacheFilePath = cacheFilePath;
     }
@@ -43,7 +47,6 @@ public class IdAllocator {
         this.occupiedIdSet.clear();
         this.forcedIdMap.clear();
         this.pendingAllocations.clear();
-        this.cachedIdMap.clear();
     }
 
     /**
@@ -81,6 +84,7 @@ public class IdAllocator {
 
             allocateId(newId, future);
             this.cachedIdMap.put(name, newId);
+            this.dirty = true;
         }
 
         this.pendingAllocations.clear();
@@ -164,12 +168,16 @@ public class IdAllocator {
             }
         }
 
-        for (String id : idsToRemove) {
-            Integer removedId = this.cachedIdMap.remove(id);
-            if (removedId != null && !this.forcedIdMap.containsValue(removedId)) {
-                this.occupiedIdSet.clear(removedId);
+        if (!idsToRemove.isEmpty()) {
+            this.dirty = true;
+            for (String id : idsToRemove) {
+                Integer removedId = this.cachedIdMap.remove(id);
+                if (removedId != null && !this.forcedIdMap.containsValue(removedId)) {
+                    this.occupiedIdSet.clear(removedId);
+                }
             }
         }
+
         return idsToRemove;
     }
 
@@ -205,15 +213,23 @@ public class IdAllocator {
      */
     public void loadFromCache() throws IOException {
         if (!Files.exists(this.cacheFilePath)) {
+            if (!this.cachedIdMap.isEmpty()) {
+                this.cachedIdMap.clear();
+            }
             return;
         }
 
-        JsonElement element = GsonHelper.readJsonFile(this.cacheFilePath);
-        if (element instanceof JsonObject jsonObject) {
-            for (Map.Entry<String, JsonElement> entry : jsonObject.entrySet()) {
-                if (entry.getValue() instanceof JsonPrimitive primitive) {
-                    int id = primitive.getAsInt();
-                    this.cachedIdMap.put(entry.getKey(), id);
+        long lastTime = Files.getLastModifiedTime(this.cacheFilePath).toMillis();
+        if (lastTime != this.lastModified) {
+            this.lastModified = lastTime;
+            this.cachedIdMap.clear();
+            JsonElement element = GsonHelper.readJsonFile(this.cacheFilePath);
+            if (element instanceof JsonObject jsonObject) {
+                for (Map.Entry<String, JsonElement> entry : jsonObject.entrySet()) {
+                    if (entry.getValue() instanceof JsonPrimitive primitive) {
+                        int id = primitive.getAsInt();
+                        this.cachedIdMap.put(entry.getKey(), id);
+                    }
                 }
             }
         }
@@ -223,6 +239,13 @@ public class IdAllocator {
      * 保存缓存到文件
      */
     public void saveToCache() throws IOException {
+        // 如果没有更改
+        if (!this.dirty) {
+            return;
+        }
+
+        this.dirty = false;
+
         // 创建按ID排序的TreeMap
         Map<Integer, String> sortedById = new TreeMap<>();
         for (Map.Entry<String, Integer> entry : this.cachedIdMap.entrySet()) {
diff --git a/core/src/main/java/net/momirealms/craftengine/core/pack/allocator/VisualBlockStateAllocator.java b/core/src/main/java/net/momirealms/craftengine/core/pack/allocator/VisualBlockStateAllocator.java
index 2e75df0cd..9e7dc27d4 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/pack/allocator/VisualBlockStateAllocator.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/pack/allocator/VisualBlockStateAllocator.java
@@ -27,6 +27,9 @@ public class VisualBlockStateAllocator {
     private final Function<String, BlockStateWrapper> factory;
     private final Set<BlockStateWrapper> forcedStates = new HashSet<>();
 
+    private boolean dirty;
+    private long lastModified;
+
     public VisualBlockStateAllocator(Path cacheFilePath, BlockStateCandidate[] candidates, Function<String, BlockStateWrapper> factory) {
         this.cacheFilePath = cacheFilePath;
         this.candidates = candidates;
@@ -37,7 +40,6 @@ public class VisualBlockStateAllocator {
         for (int i = 0; i < this.pendingAllocationFutures.length; i++) {
             this.pendingAllocationFutures[i] = new ArrayList<>();
         }
-        this.cachedBlockStates.clear();
         this.pendingAllocations.clear();
         this.forcedStates.clear();
     }
@@ -73,8 +75,11 @@ public class VisualBlockStateAllocator {
                 idsToRemove.add(entry.getKey());
             }
         }
-        for (String id : idsToRemove) {
-            this.cachedBlockStates.remove(id);
+        if (!idsToRemove.isEmpty()) {
+            this.dirty = true;
+            for (String id : idsToRemove) {
+                this.cachedBlockStates.remove(id);
+            }
         }
         return idsToRemove;
     }
@@ -144,16 +149,25 @@ public class VisualBlockStateAllocator {
      */
     public void loadFromCache() throws IOException {
         if (!Files.exists(this.cacheFilePath)) {
+            if (!this.cachedBlockStates.isEmpty()) {
+                this.cachedBlockStates.clear();
+            }
             return;
         }
-        JsonElement element = GsonHelper.readJsonFile(this.cacheFilePath);
-        if (element instanceof JsonObject jsonObject) {
-            for (Map.Entry<String, JsonElement> entry : jsonObject.entrySet()) {
-                if (entry.getValue() instanceof JsonPrimitive primitive) {
-                    String id = primitive.getAsString();
-                    BlockStateWrapper state = this.factory.apply(id);
-                    if (state != null) {
-                        this.cachedBlockStates.put(entry.getKey(), state);
+
+        long lastTime = Files.getLastModifiedTime(this.cacheFilePath).toMillis();
+        if (lastTime != this.lastModified) {
+            this.lastModified = lastTime;
+            this.cachedBlockStates.clear();
+            JsonElement element = GsonHelper.readJsonFile(this.cacheFilePath);
+            if (element instanceof JsonObject jsonObject) {
+                for (Map.Entry<String, JsonElement> entry : jsonObject.entrySet()) {
+                    if (entry.getValue() instanceof JsonPrimitive primitive) {
+                        String id = primitive.getAsString();
+                        BlockStateWrapper state = this.factory.apply(id);
+                        if (state != null) {
+                            this.cachedBlockStates.put(entry.getKey(), state);
+                        }
                     }
                 }
             }
@@ -164,6 +178,12 @@ public class VisualBlockStateAllocator {
      * 保存缓存到文件
      */
     public void saveToCache() throws IOException {
+        if (!this.dirty) {
+            return;
+        }
+
+        this.dirty = false;
+
         // 创建按ID排序的TreeMap
         Map<BlockStateWrapper, String> sortedById = new TreeMap<>();
         for (Map.Entry<String, BlockStateWrapper> entry : this.cachedBlockStates.entrySet()) {