diff --git a/Android/MMKV/build.gradle b/Android/MMKV/build.gradle
index 1343c61f..3d4589e0 100644
--- a/Android/MMKV/build.gradle
+++ b/Android/MMKV/build.gradle
@@ -8,7 +8,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.2.0'
+        classpath 'com.android.tools.build:gradle:3.2.1'
         classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.1'
         classpath 'digital.wup:android-maven-publish:3.6.2'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
diff --git a/Android/MMKV/gradle.properties b/Android/MMKV/gradle.properties
index 20e76bb1..58ee2ed4 100644
--- a/Android/MMKV/gradle.properties
+++ b/Android/MMKV/gradle.properties
@@ -12,6 +12,6 @@ org.gradle.jvmargs=-Xmx1536m
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
 
-VERSION_NAME_PREFIX=1.0.11
+VERSION_NAME_PREFIX=1.0.12
 #VERSION_NAME_SUFFIX=-SNAPSHOT
 VERSION_NAME_SUFFIX=
\ No newline at end of file
diff --git a/Android/MMKV/mmkv/src/main/cpp/MMKV.cpp b/Android/MMKV/mmkv/src/main/cpp/MMKV.cpp
index 939d2116..8cc72475 100644
--- a/Android/MMKV/mmkv/src/main/cpp/MMKV.cpp
+++ b/Android/MMKV/mmkv/src/main/cpp/MMKV.cpp
@@ -309,7 +309,8 @@ void MMKV::loadFromFile() {
                         if (m_crypter) {
                             decryptBuffer(*m_crypter, inputBuffer);
                         }
-                        m_dic = MiniPBCoder::decodeMap(inputBuffer);
+                        m_dic.clear();
+                        MiniPBCoder::decodeMap(m_dic, inputBuffer);
                         m_output = new CodedOutputData(m_ptr + Fixed32Size + m_actualSize,
                                                        m_size - Fixed32Size - m_actualSize);
                         loaded = true;
@@ -358,7 +359,8 @@ void MMKV::loadFromAshmem() {
                         if (m_crypter) {
                             decryptBuffer(*m_crypter, inputBuffer);
                         }
-                        m_dic = MiniPBCoder::decodeMap(inputBuffer);
+                        m_dic.clear();
+                        MiniPBCoder::decodeMap(m_dic, inputBuffer);
                         m_output = new CodedOutputData(m_ptr + Fixed32Size + m_actualSize,
                                                        m_size - Fixed32Size - m_actualSize);
                         loaded = true;
@@ -407,16 +409,7 @@ void MMKV::partialLoadFromFile() {
                     if (m_crypter) {
                         decryptBuffer(*m_crypter, inputBuffer);
                     }
-                    auto dic = MiniPBCoder::decodeMap(inputBuffer, bufferSize);
-                    for (auto &itr : dic) {
-                        //m_dic[itr.first] = std::move(itr.second);
-                        auto target = m_dic.find(itr.first);
-                        if (target == m_dic.end()) {
-                            m_dic.emplace(itr.first, std::move(itr.second));
-                        } else {
-                            target->second = std::move(itr.second);
-                        }
-                    }
+                    MiniPBCoder::decodeMap(m_dic, inputBuffer, bufferSize);
                     m_output->seek(bufferSize);
 
                     MMKVDebug("partial loaded [%s] with %zu values", m_mmapID.c_str(),
diff --git a/Android/MMKV/mmkv/src/main/cpp/MiniPBCoder.cpp b/Android/MMKV/mmkv/src/main/cpp/MiniPBCoder.cpp
index 603260a2..d1544b41 100644
--- a/Android/MMKV/mmkv/src/main/cpp/MiniPBCoder.cpp
+++ b/Android/MMKV/mmkv/src/main/cpp/MiniPBCoder.cpp
@@ -250,9 +250,7 @@ vector<string> MiniPBCoder::decodeOneSet() {
     return v;
 }
 
-unordered_map<string, MMBuffer> MiniPBCoder::decodeOneMap(size_t size) {
-    unordered_map<string, MMBuffer> dic;
-
+void MiniPBCoder::decodeOneMap(unordered_map<string, MMBuffer> &dic, size_t size) {
     if (size == 0) {
         auto length = m_inputData->readInt32();
     }
@@ -267,7 +265,6 @@ unordered_map<string, MMBuffer> MiniPBCoder::decodeOneMap(size_t size) {
             }
         }
     }
-    return dic;
 }
 
 string MiniPBCoder::decodeString(const MMBuffer &oData) {
@@ -280,9 +277,11 @@ MMBuffer MiniPBCoder::decodeBytes(const MMBuffer &oData) {
     return oCoder.decodeOneBytes();
 }
 
-unordered_map<string, MMBuffer> MiniPBCoder::decodeMap(const MMBuffer &oData, size_t size) {
+void MiniPBCoder::decodeMap(unordered_map<string, MMBuffer> &dic,
+                            const MMBuffer &oData,
+                            size_t size) {
     MiniPBCoder oCoder(&oData);
-    return oCoder.decodeOneMap(size);
+    oCoder.decodeOneMap(dic, size);
 }
 
 vector<string> MiniPBCoder::decodeSet(const MMBuffer &oData) {
diff --git a/Android/MMKV/mmkv/src/main/cpp/MiniPBCoder.h b/Android/MMKV/mmkv/src/main/cpp/MiniPBCoder.h
index fd997ff4..d7706346 100644
--- a/Android/MMKV/mmkv/src/main/cpp/MiniPBCoder.h
+++ b/Android/MMKV/mmkv/src/main/cpp/MiniPBCoder.h
@@ -59,7 +59,7 @@ class MiniPBCoder {
     std::string decodeOneString();
     MMBuffer decodeOneBytes();
     std::vector<std::string> decodeOneSet();
-    std::unordered_map<std::string, MMBuffer> decodeOneMap(size_t size = 0);
+    void decodeOneMap(std::unordered_map<std::string, MMBuffer> &dic, size_t size = 0);
 
 public:
     template <typename T>
@@ -71,8 +71,9 @@ class MiniPBCoder {
     static std::string decodeString(const MMBuffer &oData);
     static MMBuffer decodeBytes(const MMBuffer &oData);
     static std::vector<std::string> decodeSet(const MMBuffer &oData);
-    static std::unordered_map<std::string, MMBuffer> decodeMap(const MMBuffer &oData,
-                                                               size_t size = 0);
+    static void decodeMap(std::unordered_map<std::string, MMBuffer> &dic,
+                          const MMBuffer &oData,
+                          size_t size = 0);
 };
 
 #endif //MMKV_MINIPBCODER_H
diff --git a/Android/MMKV/mmkvdemo/build.gradle b/Android/MMKV/mmkvdemo/build.gradle
index 484e7465..37b4630c 100644
--- a/Android/MMKV/mmkvdemo/build.gradle
+++ b/Android/MMKV/mmkvdemo/build.gradle
@@ -55,7 +55,7 @@ repositories {
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
 //    implementation project(':mmkv')
-    implementation 'com.tencent:mmkv:1.0.11'
+    implementation 'com.tencent:mmkv:1.0.12'
 //    implementation 'com.tencent:mmkv:1.0.10-SNAPSHOT'
     implementation 'com.android.support:appcompat-v7:28.0.0'
     implementation 'com.android.support.constraint:constraint-layout:1.1.3'
diff --git a/Android/MMKV/mmkvdemo/src/main/java/com/tencent/mmkvdemo/BenchMarkBaseService.java b/Android/MMKV/mmkvdemo/src/main/java/com/tencent/mmkvdemo/BenchMarkBaseService.java
index d2cce35b..356bca8e 100644
--- a/Android/MMKV/mmkvdemo/src/main/java/com/tencent/mmkvdemo/BenchMarkBaseService.java
+++ b/Android/MMKV/mmkvdemo/src/main/java/com/tencent/mmkvdemo/BenchMarkBaseService.java
@@ -49,7 +49,7 @@ public abstract class BenchMarkBaseService extends Service {
     private String[] m_arrIntKeys;
 
     private static final int m_loops = 1000;
-    private static final String MMKV_ID = "benchmark_interprocess";
+    public static final String MMKV_ID = "benchmark_interprocess";
     private static final String SP_ID = "benchmark_interprocess_sp";
     private static final String CryptKey = null;
     //private static final String CryptKey = "Tencent MMKV";
@@ -296,7 +296,7 @@ private void spBatchReadStrinfg(String caller) {
 
     MMKV m_ashmemMMKV;
 
-    private MMKV GetMMKV() {
+    protected MMKV GetMMKV() {
         if (m_ashmemMMKV != null) {
             return m_ashmemMMKV;
         } else {
diff --git a/Android/MMKV/mmkvdemo/src/main/java/com/tencent/mmkvdemo/MainActivity.java b/Android/MMKV/mmkvdemo/src/main/java/com/tencent/mmkvdemo/MainActivity.java
index 0f8315d3..7822bffc 100644
--- a/Android/MMKV/mmkvdemo/src/main/java/com/tencent/mmkvdemo/MainActivity.java
+++ b/Android/MMKV/mmkvdemo/src/main/java/com/tencent/mmkvdemo/MainActivity.java
@@ -22,8 +22,10 @@
 
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.os.SystemClock;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
+import android.util.Log;
 import android.view.View;
 import android.widget.Button;
 import android.widget.TextView;
@@ -100,7 +102,7 @@ public void onClick(View v) {
 
         KotlinUsecaseKt.kotlinFunctionalTest();
 
-        //testInterProcessLock();
+        //testInterProcessLogic();
         //estImportSharedPreferences();
     }
 
@@ -110,9 +112,18 @@ protected void onDestroy() {
         MMKV.onExit();
     }
 
-    private void testInterProcessLock() {
+    private void testInterProcessLogic() {
+        MMKV mmkv = MMKV.mmkvWithID(MyService.MMKV_ID, MMKV.MULTI_PROCESS_MODE);
+        mmkv.putInt(MyService.CMD_ID, 1024);
+        Log.d("mmkv in main", "" + mmkv.decodeInt(MyService.CMD_ID));
+
         Intent intent = new Intent(this, MyService.class);
+        intent.putExtra(BenchMarkBaseService.CMD_ID, MyService.CMD_REMOVE);
         startService(intent);
+
+        SystemClock.sleep(1000 * 3);
+        int value = mmkv.decodeInt(MyService.CMD_ID);
+        Log.d("mmkv", "" + value);
     }
 
     private void testMMKV(String mmapID, String cryptKey, boolean decodeOnly) {
diff --git a/Android/MMKV/mmkvdemo/src/main/java/com/tencent/mmkvdemo/MyService.java b/Android/MMKV/mmkvdemo/src/main/java/com/tencent/mmkvdemo/MyService.java
index f1b0bbe6..7426b9e9 100644
--- a/Android/MMKV/mmkvdemo/src/main/java/com/tencent/mmkvdemo/MyService.java
+++ b/Android/MMKV/mmkvdemo/src/main/java/com/tencent/mmkvdemo/MyService.java
@@ -21,9 +21,13 @@
 package com.tencent.mmkvdemo;
 
 import android.content.Intent;
+import android.util.Log;
+
+import com.tencent.mmkv.MMKV;
 
 public class MyService extends BenchMarkBaseService {
     private static final String CALLER = "MyService";
+    public static final String CMD_REMOVE = "cmd_remove";
 
     @Override
     public void onCreate() {
@@ -53,9 +57,17 @@ public int onStartCommand(Intent intent, int flags, int startId) {
                     super.batchWriteString(CALLER);
                 } else if (cmd.equals(CMD_PREPARE_ASHMEM_BY_CP)) {
                     super.prepareAshmemMMKVByCP();
+                } else if (cmd.equals(CMD_REMOVE)) {
+                    testRemove();
                 }
             }
         }
         return super.onStartCommand(intent, flags, startId);
     }
+
+    private void testRemove() {
+        MMKV mmkv = GetMMKV();
+        Log.d("mmkv in child", "" + mmkv.decodeInt(CMD_ID));
+        mmkv.remove(CMD_ID);
+    }
 }
diff --git a/readme.md b/readme.md
index 89b9beb8..90f38dbe 100644
--- a/readme.md
+++ b/readme.md
@@ -75,8 +75,8 @@ Add the following lines to `build.gradle` on your app module:
 
 ```gradle
 dependencies {
-    implementation 'com.tencent:mmkv:1.0.11'
-    // replace "1.0.11" with any available version
+    implementation 'com.tencent:mmkv:1.0.12'
+    // replace "1.0.12" with any available version
 }
 ```
 
diff --git a/readme_cn.md b/readme_cn.md
index ad6ac303..791bcbf6 100644
--- a/readme_cn.md
+++ b/readme_cn.md
@@ -59,8 +59,8 @@ NSString *str = [mmkv getObjectOfClass:NSString.class forKey:@"string"];
 
 ```gradle
 dependencies {
-    implementation 'com.tencent:mmkv:1.0.11'
-    // replace "1.0.11" with any available version
+    implementation 'com.tencent:mmkv:1.0.12'
+    // replace "1.0.12" with any available version
 }
 ```
 
@@ -112,4 +112,4 @@ MMKV 以 BSD 3-Clause 证书开源，详情参见 [LICENSE.TXT](https://github.c
 
 ## 参与贡献
如果你有兴趣参与贡献，可以参考 [CONTRIBUTING.md](https://github.com/Tencent/MMKV/blob/master/CONTRIBUTING.md)。
[腾讯开源激励计划](https://opensource.tencent.com/contribution) 鼓励开发者的参与和贡献，期待你的加入。

 ## 问题 & 反馈
-常见问题参见 [FAQ](https://github.com/Tencent/MMKV/wiki/FAQ_cn)，欢迎提 [issues](https://github.com/Tencent/MMKV/issues) 提问反馈。
\ No newline at end of file
+常见问题参见 [FAQ](https://github.com/Tencent/MMKV/wiki/FAQ_cn)，欢迎提 [issues](https://github.com/Tencent/MMKV/issues) 提问反馈。