diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListBoolean.java b/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListBoolean.java
index 6e99a75a..c262ce41 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListBoolean.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListBoolean.java
@@ -274,6 +274,19 @@ public class ArrayListBoolean implements List<Boolean> {
         return ArrayUtils.toList(array).subList(fromIndex, toIndex);
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (!(o instanceof List<?> l)) {
+            return false;
+        }
+        return l.equals(this);
+    }
+
+    @Override
+    public int hashCode() {
+        return super.hashCode();
+    }
+
     @Override
     public String toString() {
         var builder = new StringBuilder();
diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListByte.java b/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListByte.java
index 0711560c..b4905d2f 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListByte.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListByte.java
@@ -274,6 +274,19 @@ public class ArrayListByte implements List<Byte> {
         return ArrayUtils.toList(array).subList(fromIndex, toIndex);
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (!(o instanceof List<?> l)) {
+            return false;
+        }
+        return l.equals(this);
+    }
+
+    @Override
+    public int hashCode() {
+        return super.hashCode();
+    }
+
     @Override
     public String toString() {
         var builder = new StringBuilder();
diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListDouble.java b/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListDouble.java
index befa2a58..b9b213ac 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListDouble.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListDouble.java
@@ -274,6 +274,19 @@ public class ArrayListDouble implements List<Double> {
         return ArrayUtils.toList(array).subList(fromIndex, toIndex);
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (!(o instanceof List<?> l)) {
+            return false;
+        }
+        return l.equals(this);
+    }
+
+    @Override
+    public int hashCode() {
+        return super.hashCode();
+    }
+
     @Override
     public String toString() {
         var builder = new StringBuilder();
diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListFloat.java b/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListFloat.java
index 1974366c..ae814a6a 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListFloat.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListFloat.java
@@ -274,6 +274,19 @@ public class ArrayListFloat implements List<Float> {
         return ArrayUtils.toList(array).subList(fromIndex, toIndex);
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (!(o instanceof List<?> l)) {
+            return false;
+        }
+        return l.equals(this);
+    }
+
+    @Override
+    public int hashCode() {
+        return super.hashCode();
+    }
+
     @Override
     public String toString() {
         var builder = new StringBuilder();
diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListInt.java b/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListInt.java
index 8ebff62d..b3b3ad29 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListInt.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListInt.java
@@ -274,6 +274,19 @@ public class ArrayListInt implements List<Integer> {
         return ArrayUtils.toList(array).subList(fromIndex, toIndex);
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (!(o instanceof List<?> l)) {
+            return false;
+        }
+        return l.equals(this);
+    }
+
+    @Override
+    public int hashCode() {
+        return super.hashCode();
+    }
+
     @Override
     public String toString() {
         var builder = new StringBuilder();
diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListLong.java b/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListLong.java
index b9a09d85..7d28dddd 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListLong.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListLong.java
@@ -274,6 +274,19 @@ public class ArrayListLong implements List<Long> {
         return ArrayUtils.toList(array).subList(fromIndex, toIndex);
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (!(o instanceof List<?> l)) {
+            return false;
+        }
+        return l.equals(this);
+    }
+
+    @Override
+    public int hashCode() {
+        return super.hashCode();
+    }
+
     @Override
     public String toString() {
         var builder = new StringBuilder();
diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListShort.java b/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListShort.java
index 36c58463..c8dd2a95 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListShort.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/ArrayListShort.java
@@ -274,6 +274,19 @@ public class ArrayListShort implements List<Short> {
         return ArrayUtils.toList(array).subList(fromIndex, toIndex);
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (!(o instanceof List<?> l)) {
+            return false;
+        }
+        return l.equals(this);
+    }
+
+    @Override
+    public int hashCode() {
+        return super.hashCode();
+    }
+
     @Override
     public String toString() {
         var builder = new StringBuilder();
diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/HashMapIntInt.java b/protocol/src/main/java/com/zfoo/protocol/collection/HashMapIntInt.java
index d57e08a6..c8a5d7ef 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/HashMapIntInt.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/HashMapIntInt.java
@@ -404,6 +404,19 @@ public class HashMapIntInt implements Map<Integer, Integer> {
         }
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (!(o instanceof Map<?, ?> m)) {
+            return false;
+        }
+        return m.equals(this);
+    }
+
+    @Override
+    public int hashCode() {
+        return super.hashCode();
+    }
+
     @Override
     public String toString() {
         if (isEmpty()) {
diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/HashMapIntLong.java b/protocol/src/main/java/com/zfoo/protocol/collection/HashMapIntLong.java
index ede198d7..ee763dbd 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/HashMapIntLong.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/HashMapIntLong.java
@@ -387,6 +387,19 @@ public class HashMapIntLong implements Map<Integer, Long> {
         }
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (!(o instanceof Map<?, ?> m)) {
+            return false;
+        }
+        return m.equals(this);
+    }
+
+    @Override
+    public int hashCode() {
+        return super.hashCode();
+    }
+
     @Override
     public String toString() {
         if (isEmpty()) {
diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/HashMapIntShort.java b/protocol/src/main/java/com/zfoo/protocol/collection/HashMapIntShort.java
index 01a39ab9..6884ee9d 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/HashMapIntShort.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/HashMapIntShort.java
@@ -395,6 +395,18 @@ public class HashMapIntShort implements Map<Integer, Short> {
         }
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (!(o instanceof Map<?, ?> m)) {
+            return false;
+        }
+        return m.equals(this);
+    }
+
+    @Override
+    public int hashCode() {
+        return super.hashCode();
+    }
     @Override
     public String toString() {
         if (isEmpty()) {
diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/HashMapLongInt.java b/protocol/src/main/java/com/zfoo/protocol/collection/HashMapLongInt.java
index 2ba731b3..0f109097 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/HashMapLongInt.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/HashMapLongInt.java
@@ -386,6 +386,19 @@ public class HashMapLongInt implements Map<Long, Integer> {
         }
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (!(o instanceof Map<?, ?> m)) {
+            return false;
+        }
+        return m.equals(this);
+    }
+
+    @Override
+    public int hashCode() {
+        return super.hashCode();
+    }
+
     @Override
     public String toString() {
         if (isEmpty()) {
diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/HashMapLongLong.java b/protocol/src/main/java/com/zfoo/protocol/collection/HashMapLongLong.java
index eed4c9e5..0feef2b8 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/HashMapLongLong.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/HashMapLongLong.java
@@ -386,6 +386,19 @@ public class HashMapLongLong implements Map<Long, Long> {
         }
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (!(o instanceof Map<?, ?> m)) {
+            return false;
+        }
+        return m.equals(this);
+    }
+
+    @Override
+    public int hashCode() {
+        return super.hashCode();
+    }
+
     @Override
     public String toString() {
         if (isEmpty()) {
diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/HashSetByte.java b/protocol/src/main/java/com/zfoo/protocol/collection/HashSetByte.java
index d18d2e02..61f8bbbf 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/HashSetByte.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/HashSetByte.java
@@ -16,7 +16,7 @@ import io.netty.util.collection.ByteObjectHashMap;
 
 import java.util.AbstractSet;
 import java.util.Iterator;
-import java.util.Objects;
+import java.util.Set;
 
 /**
  * @author godotg
@@ -74,18 +74,14 @@ public class HashSetByte extends AbstractSet<Byte> {
 
     @Override
     public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
+        if (!(o instanceof Set<?> s)) {
             return false;
         }
-        var obj = (HashSetByte) o;
-        return Objects.equals(map, obj.map);
+        return s.equals(this);
     }
 
     @Override
     public int hashCode() {
-        return Objects.hashCode(map);
+        return map.hashCode();
     }
 }
diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/HashSetInt.java b/protocol/src/main/java/com/zfoo/protocol/collection/HashSetInt.java
index dd2cf97b..0e50ecea 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/HashSetInt.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/HashSetInt.java
@@ -16,7 +16,7 @@ import io.netty.util.collection.IntObjectHashMap;
 
 import java.util.AbstractSet;
 import java.util.Iterator;
-import java.util.Objects;
+import java.util.Set;
 
 /**
  * @author godotg
@@ -74,18 +74,14 @@ public class HashSetInt extends AbstractSet<Integer> {
 
     @Override
     public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
+        if (!(o instanceof Set<?> s)) {
             return false;
         }
-        var obj = (HashSetInt) o;
-        return Objects.equals(map, obj.map);
+        return s.equals(this);
     }
 
     @Override
     public int hashCode() {
-        return Objects.hashCode(map);
+        return map.hashCode();
     }
 }
diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/HashSetLong.java b/protocol/src/main/java/com/zfoo/protocol/collection/HashSetLong.java
index ad4c84bd..03572239 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/HashSetLong.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/HashSetLong.java
@@ -16,7 +16,7 @@ import io.netty.util.collection.LongObjectHashMap;
 
 import java.util.AbstractSet;
 import java.util.Iterator;
-import java.util.Objects;
+import java.util.Set;
 
 /**
  * @author godotg
@@ -78,18 +78,14 @@ public class HashSetLong extends AbstractSet<Long> {
 
     @Override
     public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
+        if (!(o instanceof Set<?> s)) {
             return false;
         }
-        var obj = (HashSetLong) o;
-        return Objects.equals(map, obj.map);
+        return s.equals(this);
     }
 
     @Override
     public int hashCode() {
-        return Objects.hashCode(map);
+        return map.hashCode();
     }
 }
diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/HashSetShort.java b/protocol/src/main/java/com/zfoo/protocol/collection/HashSetShort.java
index b5248182..afdcbbe4 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/HashSetShort.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/HashSetShort.java
@@ -16,7 +16,7 @@ import io.netty.util.collection.ShortObjectHashMap;
 
 import java.util.AbstractSet;
 import java.util.Iterator;
-import java.util.Objects;
+import java.util.Set;
 
 /**
  * @author godotg
@@ -74,18 +74,14 @@ public class HashSetShort extends AbstractSet<Short> {
 
     @Override
     public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
+        if (!(o instanceof Set<?> s)) {
             return false;
         }
-        var obj = (HashSetShort) o;
-        return Objects.equals(map, obj.map);
+        return s.equals(this);
     }
 
     @Override
     public int hashCode() {
-        return Objects.hashCode(map);
+        return map.hashCode();
     }
 }
diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/concurrent/ConcurrentArrayList.java b/protocol/src/main/java/com/zfoo/protocol/collection/concurrent/ConcurrentArrayList.java
index d35bb1fd..4552a135 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/concurrent/ConcurrentArrayList.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/concurrent/ConcurrentArrayList.java
@@ -270,12 +270,10 @@ public class ConcurrentArrayList<E> implements List<E> {
 
     @Override
     public boolean equals(Object o) {
-        lock.lock();
-        try {
-            return list.equals(o);
-        } finally {
-            lock.unlock();
+        if (!(o instanceof List<?> l)) {
+            return false;
         }
+        return l.equals(this);
     }
 
     @Override