diff --git a/dledger/src/main/java/io/openmessaging/storage/dledger/DLedgerRpcNettyService.java b/dledger/src/main/java/io/openmessaging/storage/dledger/DLedgerRpcNettyService.java
index 79185991..73b3ce09 100644
--- a/dledger/src/main/java/io/openmessaging/storage/dledger/DLedgerRpcNettyService.java
+++ b/dledger/src/main/java/io/openmessaging/storage/dledger/DLedgerRpcNettyService.java
@@ -26,6 +26,8 @@
 import io.openmessaging.storage.dledger.protocol.GetEntriesResponse;
 import io.openmessaging.storage.dledger.protocol.HeartBeatRequest;
 import io.openmessaging.storage.dledger.protocol.HeartBeatResponse;
+import io.openmessaging.storage.dledger.protocol.InstallSnapshotRequest;
+import io.openmessaging.storage.dledger.protocol.InstallSnapshotResponse;
 import io.openmessaging.storage.dledger.protocol.LeadershipTransferRequest;
 import io.openmessaging.storage.dledger.protocol.LeadershipTransferResponse;
 import io.openmessaging.storage.dledger.protocol.MetadataRequest;
@@ -73,7 +75,7 @@ public class DLedgerRpcNettyService extends DLedgerRpcService {
 
     private AbstractDLedgerServer dLedger;
 
-    private final ConcurrentHashMap<Integer, UserDefineProcessor<? extends UserDefineRequest,? extends UserDefineResponse>> userDefineProcessors = new ConcurrentHashMap<Integer, UserDefineProcessor<? extends UserDefineRequest,? extends UserDefineResponse>>();
+    private final ConcurrentHashMap<Integer, UserDefineProcessor<? extends UserDefineRequest, ? extends UserDefineResponse>> userDefineProcessors = new ConcurrentHashMap<Integer, UserDefineProcessor<? extends UserDefineRequest, ? extends UserDefineResponse>>();
 
     private final ExecutorService futureExecutor = Executors.newFixedThreadPool(4, new NamedThreadFactory("FutureExecutor"));
 
@@ -118,7 +120,7 @@ public boolean rejectRequest() {
     }
 
     @Override
-    public void registerUserDefineProcessor(UserDefineProcessor<? extends UserDefineRequest,? extends UserDefineResponse> userDefineProcessor) {
+    public void registerUserDefineProcessor(UserDefineProcessor<? extends UserDefineRequest, ? extends UserDefineResponse> userDefineProcessor) {
         this.userDefineProcessors.put(userDefineProcessor.getRequestTypeCode(), userDefineProcessor);
     }
 
@@ -132,6 +134,7 @@ private void registerProcessor(NettyRemotingServer remotingServer, NettyRequestP
         remotingServer.registerProcessor(DLedgerRequestCode.HEART_BEAT.getCode(), protocolProcessor, null);
         remotingServer.registerProcessor(DLedgerRequestCode.LEADERSHIP_TRANSFER.getCode(), protocolProcessor, null);
         remotingServer.registerProcessor(DLedgerRequestCode.USER_DEFINE_REQUEST.getCode(), protocolProcessor, null);
+        remotingServer.registerProcessor(DLedgerRequestCode.INSTALL_SNAPSHOT.getCode(), protocolProcessor, null);
     }
 
     private NettyRemotingServer registerRemotingServer(NettyServerConfig nettyServerConfig, ChannelEventListener channelEventListener, NettyRequestProcessor protocolProcessor) {
@@ -277,6 +280,11 @@ public CompletableFuture<PushEntryResponse> push(PushEntryRequest request) {
         return future;
     }
 
+    @Override
+    public CompletableFuture<InstallSnapshotResponse> installSnapshot(InstallSnapshotRequest request) throws Exception {
+        return null;
+    }
+
     @Override
     public CompletableFuture<LeadershipTransferResponse> leadershipTransfer(
             LeadershipTransferRequest request) {
@@ -395,6 +403,14 @@ public RemotingCommand processRequest(ChannelHandlerContext ctx, RemotingCommand
                 }, futureExecutor);
                 break;
             }
+            case INSTALL_SNAPSHOT: {
+                InstallSnapshotRequest installSnapshotRequest = JSON.parseObject(request.getBody(), InstallSnapshotRequest.class);
+                CompletableFuture<InstallSnapshotResponse> future = handleInstallSnapshot(installSnapshotRequest);
+                future.whenCompleteAsync((x, y) -> {
+                    writeResponse(x, y, request, ctx);
+                }, futureExecutor);
+                break;
+            }
             case USER_DEFINE_REQUEST:
                 UserDefineCommandHeader header = (UserDefineCommandHeader) request.decodeCommandCustomHeader(UserDefineCommandHeader.class);
                 UserDefineProcessor<? extends UserDefineRequest, ? extends UserDefineResponse> userDefineProcessor = this.userDefineProcessors.get(header.getRequestTypeCode());
@@ -453,6 +469,11 @@ public CompletableFuture<PushEntryResponse> handlePush(PushEntryRequest request)
         return this.dLedger.handlePush(request);
     }
 
+    @Override
+    public CompletableFuture<InstallSnapshotResponse> handleInstallSnapshot(InstallSnapshotRequest request) throws Exception {
+        return this.dLedger.handleInstallSnapshot(request);
+    }
+
     public RemotingCommand handleResponse(RequestOrResponse response, RemotingCommand request) {
         RemotingCommand remotingCommand = RemotingCommand.createResponseCommand(DLedgerResponseCode.SUCCESS.getCode(), null);
         remotingCommand.setBody(JSON.toJSONBytes(response));
diff --git a/dledger/src/main/java/io/openmessaging/storage/dledger/DLedgerServer.java b/dledger/src/main/java/io/openmessaging/storage/dledger/DLedgerServer.java
index 42bb9442..5cbd69ff 100644
--- a/dledger/src/main/java/io/openmessaging/storage/dledger/DLedgerServer.java
+++ b/dledger/src/main/java/io/openmessaging/storage/dledger/DLedgerServer.java
@@ -26,6 +26,8 @@
 import io.openmessaging.storage.dledger.protocol.GetEntriesResponse;
 import io.openmessaging.storage.dledger.protocol.HeartBeatRequest;
 import io.openmessaging.storage.dledger.protocol.HeartBeatResponse;
+import io.openmessaging.storage.dledger.protocol.InstallSnapshotRequest;
+import io.openmessaging.storage.dledger.protocol.InstallSnapshotResponse;
 import io.openmessaging.storage.dledger.protocol.LeadershipTransferRequest;
 import io.openmessaging.storage.dledger.protocol.LeadershipTransferResponse;
 import io.openmessaging.storage.dledger.protocol.MetadataRequest;
@@ -429,7 +431,11 @@ public CompletableFuture<PushEntryResponse> handlePush(PushEntryRequest request)
             response.setLeaderId(memberState.getLeaderId());
             return CompletableFuture.completedFuture(response);
         }
+    }
 
+    @Override
+    public CompletableFuture<InstallSnapshotResponse> handleInstallSnapshot(InstallSnapshotRequest request) throws Exception {
+        return null;
     }
 
     @Override
diff --git a/dledger/src/main/java/io/openmessaging/storage/dledger/protocol/DLedgerRequestCode.java b/dledger/src/main/java/io/openmessaging/storage/dledger/protocol/DLedgerRequestCode.java
index 75234e6d..5260af97 100644
--- a/dledger/src/main/java/io/openmessaging/storage/dledger/protocol/DLedgerRequestCode.java
+++ b/dledger/src/main/java/io/openmessaging/storage/dledger/protocol/DLedgerRequestCode.java
@@ -29,8 +29,11 @@ public enum DLedgerRequestCode {
     PULL(51003, ""),
     PUSH(51004, ""),
     LEADERSHIP_TRANSFER(51005, ""),
+
+    INSTALL_SNAPSHOT(51006, ""),
     USER_DEFINE_REQUEST(59999, "");
 
+
     private static Map<Integer, DLedgerRequestCode> codeMap = new HashMap<>();
 
     static {
diff --git a/dledger/src/main/java/io/openmessaging/storage/dledger/protocol/InstallSnapshotRequest.java b/dledger/src/main/java/io/openmessaging/storage/dledger/protocol/InstallSnapshotRequest.java
new file mode 100644
index 00000000..5faeaf48
--- /dev/null
+++ b/dledger/src/main/java/io/openmessaging/storage/dledger/protocol/InstallSnapshotRequest.java
@@ -0,0 +1,59 @@
+/**
+ * Copyright 2017-2022 The DLedger Authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.openmessaging.storage.dledger.protocol;
+
+public class InstallSnapshotRequest extends RequestOrResponse {
+
+    private long lastIncludedIndex;
+
+    private long lastIncludedTerm;
+
+    private byte[] data;
+
+    public InstallSnapshotRequest() {
+    }
+
+    public InstallSnapshotRequest(long lastIncludedIndex, long lastIncludedTerm, byte[] data) {
+        this.lastIncludedIndex = lastIncludedIndex;
+        this.lastIncludedTerm = lastIncludedTerm;
+        this.data = data;
+    }
+
+    public long getLastIncludedIndex() {
+        return lastIncludedIndex;
+    }
+
+    public void setLastIncludedIndex(long lastIncludedIndex) {
+        this.lastIncludedIndex = lastIncludedIndex;
+    }
+
+    public long getLastIncludedTerm() {
+        return lastIncludedTerm;
+    }
+
+    public void setLastIncludedTerm(long lastIncludedTerm) {
+        this.lastIncludedTerm = lastIncludedTerm;
+    }
+
+    public byte[] getData() {
+        return data;
+    }
+
+    public void setData(byte[] data) {
+        this.data = data;
+    }
+}
diff --git a/dledger/src/main/java/io/openmessaging/storage/dledger/protocol/InstallSnapshotResponse.java b/dledger/src/main/java/io/openmessaging/storage/dledger/protocol/InstallSnapshotResponse.java
new file mode 100644
index 00000000..b01e9e7c
--- /dev/null
+++ b/dledger/src/main/java/io/openmessaging/storage/dledger/protocol/InstallSnapshotResponse.java
@@ -0,0 +1,30 @@
+/**
+ * Copyright 2017-2022 The DLedger Authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.openmessaging.storage.dledger.protocol;
+
+public class InstallSnapshotResponse extends RequestOrResponse {
+
+    public InstallSnapshotResponse(int term) {
+        this.term = term;
+    }
+
+    @Override
+    public RequestOrResponse code(int code) {
+        this.code = code;
+        return this;
+    }
+}
diff --git a/dledger/src/main/java/io/openmessaging/storage/dledger/protocol/handler/DLedgerRaftProtocolHandler.java b/dledger/src/main/java/io/openmessaging/storage/dledger/protocol/handler/DLedgerRaftProtocolHandler.java
index 81e1a309..ee25d40d 100644
--- a/dledger/src/main/java/io/openmessaging/storage/dledger/protocol/handler/DLedgerRaftProtocolHandler.java
+++ b/dledger/src/main/java/io/openmessaging/storage/dledger/protocol/handler/DLedgerRaftProtocolHandler.java
@@ -18,6 +18,8 @@
 
 import io.openmessaging.storage.dledger.protocol.HeartBeatRequest;
 import io.openmessaging.storage.dledger.protocol.HeartBeatResponse;
+import io.openmessaging.storage.dledger.protocol.InstallSnapshotRequest;
+import io.openmessaging.storage.dledger.protocol.InstallSnapshotResponse;
 import io.openmessaging.storage.dledger.protocol.PullEntriesRequest;
 import io.openmessaging.storage.dledger.protocol.PullEntriesResponse;
 import io.openmessaging.storage.dledger.protocol.PushEntryRequest;
@@ -37,4 +39,6 @@ public interface DLedgerRaftProtocolHandler {
 
     CompletableFuture<PushEntryResponse> handlePush(PushEntryRequest request) throws Exception;
 
+    CompletableFuture<InstallSnapshotResponse> handleInstallSnapshot(InstallSnapshotRequest request) throws Exception;
+
 }
diff --git a/dledger/src/main/java/io/openmessaging/storage/dledger/protocol/protocol/DLedgerRaftProtocol.java b/dledger/src/main/java/io/openmessaging/storage/dledger/protocol/protocol/DLedgerRaftProtocol.java
index b37b576d..52614fe7 100644
--- a/dledger/src/main/java/io/openmessaging/storage/dledger/protocol/protocol/DLedgerRaftProtocol.java
+++ b/dledger/src/main/java/io/openmessaging/storage/dledger/protocol/protocol/DLedgerRaftProtocol.java
@@ -18,6 +18,8 @@
 
 import io.openmessaging.storage.dledger.protocol.HeartBeatRequest;
 import io.openmessaging.storage.dledger.protocol.HeartBeatResponse;
+import io.openmessaging.storage.dledger.protocol.InstallSnapshotRequest;
+import io.openmessaging.storage.dledger.protocol.InstallSnapshotResponse;
 import io.openmessaging.storage.dledger.protocol.PullEntriesRequest;
 import io.openmessaging.storage.dledger.protocol.PullEntriesResponse;
 import io.openmessaging.storage.dledger.protocol.PushEntryRequest;
@@ -37,4 +39,6 @@ public interface DLedgerRaftProtocol {
 
     CompletableFuture<PushEntryResponse> push(PushEntryRequest request) throws Exception;
 
+    CompletableFuture<InstallSnapshotResponse> installSnapshot(InstallSnapshotRequest request) throws Exception;
+
 }
diff --git a/proxy/src/main/java/io/openmessaging/storage/dledger/proxy/DLedgerProxy.java b/proxy/src/main/java/io/openmessaging/storage/dledger/proxy/DLedgerProxy.java
index b165e316..0892c01c 100644
--- a/proxy/src/main/java/io/openmessaging/storage/dledger/proxy/DLedgerProxy.java
+++ b/proxy/src/main/java/io/openmessaging/storage/dledger/proxy/DLedgerProxy.java
@@ -1,4 +1,4 @@
-/*
+/**
  * Copyright 2017-2022 The DLedger Authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -31,6 +31,8 @@
 import io.openmessaging.storage.dledger.protocol.GetEntriesResponse;
 import io.openmessaging.storage.dledger.protocol.HeartBeatRequest;
 import io.openmessaging.storage.dledger.protocol.HeartBeatResponse;
+import io.openmessaging.storage.dledger.protocol.InstallSnapshotRequest;
+import io.openmessaging.storage.dledger.protocol.InstallSnapshotResponse;
 import io.openmessaging.storage.dledger.protocol.LeadershipTransferRequest;
 import io.openmessaging.storage.dledger.protocol.LeadershipTransferResponse;
 import io.openmessaging.storage.dledger.protocol.MetadataRequest;
@@ -247,6 +249,11 @@ public CompletableFuture<PushEntryResponse> handlePush(PushEntryRequest request)
         }
     }
 
+    @Override
+    public CompletableFuture<InstallSnapshotResponse> handleInstallSnapshot(InstallSnapshotRequest request) throws Exception {
+        return null;
+    }
+
     public void startup() {
         this.dLedgerRpcService.startup();
         this.dLedgerManager.startup();