diff --git a/orm/src/main/java/com/zfoo/orm/model/cache/EntityCaches.java b/orm/src/main/java/com/zfoo/orm/model/cache/EntityCaches.java
index 8fbd9275..1a43d3e0 100644
--- a/orm/src/main/java/com/zfoo/orm/model/cache/EntityCaches.java
+++ b/orm/src/main/java/com/zfoo/orm/model/cache/EntityCaches.java
@@ -94,7 +94,6 @@ public class EntityCaches<PK extends Comparable<PK>, E extends IEntity<PK>> impl
                         // 如果数据库中不存在则给一个默认值
                         if (entity == null) {
                             entity = (E) entityDef.newEntity(pk);
-                            logger.error("数据库[{}]没有包含主键[pk:{}]的文档，返回默认值", entityDef.getClazz().getSimpleName(), pk);
                         }
 
                         return new PNode<E>(entity);
@@ -144,6 +143,11 @@ public class EntityCaches<PK extends Comparable<PK>, E extends IEntity<PK>> impl
             cache.put(entity.id(), currentPnode);
         }
 
+        if (currentPnode.getThreadId() != Thread.currentThread().getId()) {
+            logger.error("[{}]被多线程访问了,先后2次访问线程分别是[{}] [{}]", entity.getClass().getSimpleName(),
+                    currentPnode.getThreadName(), Thread.currentThread().getName());
+        }
+
         // 加100以防止，立刻加载并且立刻修改数据的情况发生时，服务器取到的时间戳相同
         currentPnode.setModifiedTime(TimeUtils.now() + 100);
     }
@@ -241,7 +245,7 @@ public class EntityCaches<PK extends Comparable<PK>, E extends IEntity<PK>> impl
         var ids = updateList.stream().map(it -> it.id()).collect(Collectors.toList());
 
         try {
-            var dbList = OrmContext.getQuery((Class<E>)entityDef.getClazz()).in("_id", ids).queryAll();
+            var dbList = OrmContext.getQuery((Class<E>) entityDef.getClazz()).in("_id", ids).queryAll();
             var dbMap = dbList.stream().collect(Collectors.toMap(key -> key.id(), value -> value));
             for (var entity : updateList) {
                 var dbEntity = dbMap.get(entity.id());
diff --git a/orm/src/main/java/com/zfoo/orm/model/entity/IEntity.java b/orm/src/main/java/com/zfoo/orm/model/entity/IEntity.java
index 454b08e7..d6739b8b 100644
--- a/orm/src/main/java/com/zfoo/orm/model/entity/IEntity.java
+++ b/orm/src/main/java/com/zfoo/orm/model/entity/IEntity.java
@@ -13,6 +13,8 @@
 
 package com.zfoo.orm.model.entity;
 
+import com.zfoo.protocol.util.StringUtils;
+
 /**
  * @author jaysunxiao
  * @version 3.0
@@ -46,4 +48,25 @@ public interface IEntity<PK extends Comparable<PK>> {
     default void svs(long vs) {
     }
 
+    /**
+     * 由于查询不存在时缓存中也会有一份，因此判断为空需要根据实际类型才能决定
+     *
+     * @return
+     */
+    default boolean isNull() {
+        PK idValue = id();
+        if (idValue == null) {
+            return true;
+        }
+        if (idValue instanceof Integer) {
+            return idValue.equals(0);
+        }
+        if (idValue instanceof Long) {
+            return idValue.equals(0L);
+        }
+        if (idValue instanceof String) {
+            return StringUtils.isEmpty((CharSequence) idValue);
+        }
+        return false;
+    }
 }
diff --git a/orm/src/main/java/com/zfoo/orm/model/persister/PNode.java b/orm/src/main/java/com/zfoo/orm/model/persister/PNode.java
index 23615c18..243997ff 100644
--- a/orm/src/main/java/com/zfoo/orm/model/persister/PNode.java
+++ b/orm/src/main/java/com/zfoo/orm/model/persister/PNode.java
@@ -31,15 +31,21 @@ public class PNode<E extends IEntity<?>> {
     // 修改数据的时间
     private volatile long modifiedTime;
 
-
     private volatile E entity;
 
+    // 记录最初访问时的线程信息
+    private long threadId;
+    private String threadName;
+
     public PNode(E entity) {
         this.entity = entity;
 
         var currentTime = TimeUtils.now();
         this.writeToDbTime = currentTime;
         this.modifiedTime = currentTime;
+
+        this.threadId = Thread.currentThread().getId();
+        this.threadName = Thread.currentThread().getName();
     }
 
     public E getEntity() {
@@ -65,4 +71,20 @@ public class PNode<E extends IEntity<?>> {
     public void setModifiedTime(long modifiedTime) {
         this.modifiedTime = modifiedTime;
     }
+
+    public long getThreadId() {
+        return threadId;
+    }
+
+    public void setThreadId(long threadId) {
+        this.threadId = threadId;
+    }
+
+    public String getThreadName() {
+        return threadName;
+    }
+
+    public void setThreadName(String threadName) {
+        this.threadName = threadName;
+    }
 }