diff --git a/src/main/java/work/slhaf/memory/MemoryGraph.java b/src/main/java/work/slhaf/memory/MemoryGraph.java
index 8a066169..f26409ee 100644
--- a/src/main/java/work/slhaf/memory/MemoryGraph.java
+++ b/src/main/java/work/slhaf/memory/MemoryGraph.java
@@ -1,11 +1,13 @@
 package work.slhaf.memory;
 
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 import lombok.extern.slf4j.Slf4j;
 import work.slhaf.memory.content.MemorySlice;
 import work.slhaf.memory.exception.UnExistedTopicException;
 import work.slhaf.memory.node.MemoryNode;
 import work.slhaf.memory.node.TopicNode;
+import work.slhaf.memory.pojo.PersistableObject;
 
 import java.io.*;
 import java.nio.file.Files;
@@ -15,12 +17,14 @@ import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.util.*;
 
+@EqualsAndHashCode(callSuper = true)
 @Data
 @Slf4j
-public class MemoryGraph implements Serializable {
+public class MemoryGraph extends PersistableObject {
 
     @Serial
     private static final long serialVersionUID = 1L;
+
     private static final String STORAGE_DIR = "./data/memory/";
     //todo: 实现记忆的短期缓存机制
     private String id;
diff --git a/src/main/java/work/slhaf/memory/content/MemorySlice.java b/src/main/java/work/slhaf/memory/content/MemorySlice.java
index 6c73901d..f2f3abbc 100644
--- a/src/main/java/work/slhaf/memory/content/MemorySlice.java
+++ b/src/main/java/work/slhaf/memory/content/MemorySlice.java
@@ -1,13 +1,19 @@
 package work.slhaf.memory.content;
 
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 import work.slhaf.chat.pojo.Message;
+import work.slhaf.memory.pojo.PersistableObject;
 
-import java.io.Serializable;
+import java.io.Serial;
 import java.util.List;
 
+@EqualsAndHashCode(callSuper = true)
 @Data
-public class MemorySlice implements Serializable, Comparable<MemorySlice> {
+public class MemorySlice extends PersistableObject implements Comparable<MemorySlice> {
+
+    @Serial
+    private static final long serialVersionUID = 1L;
 
     /**
      * 关联的完整对话的id
diff --git a/src/main/java/work/slhaf/memory/node/MemoryNode.java b/src/main/java/work/slhaf/memory/node/MemoryNode.java
index b13297c3..8090fa2e 100644
--- a/src/main/java/work/slhaf/memory/node/MemoryNode.java
+++ b/src/main/java/work/slhaf/memory/node/MemoryNode.java
@@ -1,18 +1,24 @@
 package work.slhaf.memory.node;
 
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 import lombok.extern.slf4j.Slf4j;
 import work.slhaf.memory.content.MemorySlice;
 import work.slhaf.memory.exception.NullSliceListException;
+import work.slhaf.memory.pojo.PersistableObject;
 
 import java.io.*;
 import java.time.LocalDate;
 import java.util.ArrayList;
 import java.util.List;
 
+@EqualsAndHashCode(callSuper = true)
 @Data
 @Slf4j
-public class MemoryNode implements Serializable, Comparable<MemoryNode> {
+public class MemoryNode extends PersistableObject implements Comparable<MemoryNode> {
+
+    @Serial
+    private static final long serialVersionUID = 1L;
 
     private static String SLICE_DATA_DIR = "./data/slice/";
 
diff --git a/src/main/java/work/slhaf/memory/node/TopicNode.java b/src/main/java/work/slhaf/memory/node/TopicNode.java
index 6ebbc969..3cf8e36c 100644
--- a/src/main/java/work/slhaf/memory/node/TopicNode.java
+++ b/src/main/java/work/slhaf/memory/node/TopicNode.java
@@ -1,13 +1,20 @@
 package work.slhaf.memory.node;
 
 import lombok.Data;
+import lombok.EqualsAndHashCode;
+import work.slhaf.memory.pojo.PersistableObject;
 
-import java.io.Serializable;
+import java.io.Serial;
 import java.util.HashMap;
 import java.util.List;
 
+@EqualsAndHashCode(callSuper = true)
 @Data
-public class TopicNode implements Serializable {
+public class TopicNode extends PersistableObject {
+
+    @Serial
+    private static final long serialVersionUID = 1L;
+
     private HashMap<String,TopicNode> topicNodes;
     private List<MemoryNode> memoryNodes;
 }
diff --git a/src/main/java/work/slhaf/memory/pojo/PersistableObject.java b/src/main/java/work/slhaf/memory/pojo/PersistableObject.java
new file mode 100644
index 00000000..434cb4ec
--- /dev/null
+++ b/src/main/java/work/slhaf/memory/pojo/PersistableObject.java
@@ -0,0 +1,7 @@
+package work.slhaf.memory.pojo;
+
+import java.io.Serial;
+import java.io.Serializable;
+
+public abstract class PersistableObject implements Serializable {
+}