diff --git a/deepes/README.md b/deepes/README.md
index 48dbee2c1b30cc6024b84fed66e7f72b3e534694..c2e6ef88108cff5e05273605ea0ae0b93899b365 100644
--- a/deepes/README.md
+++ b/deepes/README.md
@@ -11,14 +11,14 @@ auto agent = ESAgent(config);
 
 for (int i = 0; i < 10; ++i) {
    auto sampling_agnet = agent->clone(); // clone出一个sampling agent
-   SamplingKey key;
-   agent->add_noise(key); // 参数扰动，同时保存随机种子到key中
+   SamplingInfo info;
+   agent->add_noise(info); // 参数扰动，同时保存随机种子到info中
    int reward = evaluate(env, sampling_agent); //评估参数
-   noisy_keys.push_back(key); // 记录随机噪声对应种子
+   noisy_info.push_back(info); // 记录随机噪声对应种子
    noisy_rewards.push_back(reward); // 记录评估结果
 }
 //根据评估结果、随机种子更新参数，然后重复以上过程，直到收敛。
-agent->update(noisy_keys, noisy_rewards);
+agent->update(noisy_info, noisy_rewards);
 ```
 
 ## 一键运行demo列表
diff --git a/deepes/demo/paddle/cartpole_solver_parallel.cc b/deepes/demo/paddle/cartpole_solver_parallel.cc
index 5fe4ae0c81d1550aa081b5bad86f0e643de260da..704b35e29574e799ff8ca9ba3403477b841e8f36 100644
--- a/deepes/demo/paddle/cartpole_solver_parallel.cc
+++ b/deepes/demo/paddle/cartpole_solver_parallel.cc
@@ -95,25 +95,25 @@ int main(int argc, char* argv[]) {
     sampling_agents.push_back(agent->clone());
   }
 
-  std::vector<SamplingKey> noisy_keys;
+  std::vector<SamplingInfo> noisy_info;
   std::vector<float> noisy_rewards(ITER, 0.0f);
-  noisy_keys.resize(ITER);
+  noisy_info.resize(ITER);
 
   omp_set_num_threads(10);
-  for (int epoch = 0; epoch < 1000; ++epoch) {
+  for (int epoch = 0; epoch < 300; ++epoch) {
 #pragma omp parallel for schedule(dynamic, 1)
     for (int i = 0; i < ITER; ++i) {
       std::shared_ptr<ESAgent> sampling_agent = sampling_agents[i];
-      SamplingKey key;
-      bool success = sampling_agent->add_noise(key);
+      SamplingInfo info;
+      bool success = sampling_agent->add_noise(info);
       float reward = evaluate(envs[i], sampling_agent);
 
-      noisy_keys[i] = key;
+      noisy_info[i] = info;
       noisy_rewards[i] = reward;
     }
 
     // NOTE: all parameters of sampling_agents will be updated
-    bool success = agent->update(noisy_keys, noisy_rewards);
+    bool success = agent->update(noisy_info, noisy_rewards);
   
     int reward = evaluate(envs[0], agent);
     LOG(INFO) << "Epoch:" << epoch << " Reward: " << reward;
diff --git a/deepes/demo/torch/cartpole_solver_parallel.cc b/deepes/demo/torch/cartpole_solver_parallel.cc
index 3311ed6185a8360e92258ccf9e3b42323e07ab76..8261466ea662d16ea6379f25b574e9df76d6b4d8 100644
--- a/deepes/demo/torch/cartpole_solver_parallel.cc
+++ b/deepes/demo/torch/cartpole_solver_parallel.cc
@@ -59,23 +59,23 @@ int main(int argc, char* argv[]) {
     sampling_agents.push_back(agent->clone());
   }
 
-  std::vector<SamplingKey> noisy_keys;
+  std::vector<SamplingInfo> noisy_info;
   std::vector<float> noisy_rewards(ITER, 0.0f);
-  noisy_keys.resize(ITER);
+  noisy_info.resize(ITER);
 
   for (int epoch = 0; epoch < 1000; ++epoch) {
 #pragma omp parallel for schedule(dynamic, 1)
     for (int i = 0; i < ITER; ++i) {
       auto sampling_agent = sampling_agents[i];
-      SamplingKey key;
-      bool success = sampling_agent->add_noise(key);
+      SamplingInfo info;
+      bool success = sampling_agent->add_noise(info);
       float reward = evaluate(envs[i], sampling_agent);
-      noisy_keys[i] = key;
+      noisy_info[i] = info;
       noisy_rewards[i] = reward;
     }
     
     // Will also update parameters of sampling_agents
-    bool success = agent->update(noisy_keys, noisy_rewards);
+    bool success = agent->update(noisy_info, noisy_rewards);
     
     // Use original agent to evalute (without noise).
     int reward = evaluate(envs[0], agent);
diff --git a/deepes/include/paddle/es_agent.h b/deepes/include/paddle/es_agent.h
index ceeaf053877bd837d59ba963132ed0077bc9da84..219c58f4abaa4a1c04d16f549ff66f76a05f9db7 100644
--- a/deepes/include/paddle/es_agent.h
+++ b/deepes/include/paddle/es_agent.h
@@ -63,11 +63,11 @@ class ESAgent {
    * Parameters of cloned agents will also be updated.
    */
   bool update(
-      std::vector<SamplingKey>& noisy_keys,
+      std::vector<SamplingInfo>& noisy_info,
       std::vector<float>& noisy_rewards);
   
   // copied parameters = original parameters + noise
-  bool add_noise(SamplingKey& sampling_key);
+  bool add_noise(SamplingInfo& sampling_info);
 
   /**
    * @brief Get paddle predict
diff --git a/deepes/include/torch/es_agent.h b/deepes/include/torch/es_agent.h
index 50d6f4c2d9fb454ac9450f74b39766b013c480a2..50434b5e9e08a4915c83c277b3b9e0396e52a016 100644
--- a/deepes/include/torch/es_agent.h
+++ b/deepes/include/torch/es_agent.h
@@ -98,7 +98,7 @@ public:
    * Only not cloned ESAgent can call `update` function.
    * Parameters of cloned agents will also be updated.
    */
-  bool update(std::vector<SamplingKey>& noisy_keys, std::vector<float>& noisy_rewards) {
+  bool update(std::vector<SamplingInfo>& noisy_info, std::vector<float>& noisy_rewards) {
     if (_is_sampling_agent) {
       LOG(ERROR) << "[DeepES] Cloned ESAgent cannot call update function, please use original ESAgent.";
       return false;
@@ -107,8 +107,8 @@ public:
     compute_centered_ranks(noisy_rewards);
 
     memset(_neg_gradients, 0, _param_size * sizeof(float));
-    for (int i = 0; i < noisy_keys.size(); ++i) {
-      int key = noisy_keys[i].key(0);
+    for (int i = 0; i < noisy_info.size(); ++i) {
+      int key = noisy_info[i].key(0);
       float reward = noisy_rewards[i];
       bool success = _sampling_method->resampling(key, _noise, _param_size);
       for (int64_t j = 0; j < _param_size; ++j) {
@@ -116,7 +116,7 @@ public:
       }
     }
     for (int64_t j = 0; j < _param_size; ++j) {
-      _neg_gradients[j] /= -1.0 * noisy_keys.size();
+      _neg_gradients[j] /= -1.0 * noisy_info.size();
     }
 
     //update
@@ -125,7 +125,7 @@ public:
     for (auto& param: params) {
       torch::Tensor tensor = param.value().view({-1});
       auto tensor_a = tensor.accessor<float,1>();
-      _optimizer->update(tensor_a, _neg_gradients+counter, tensor.size(0), param.key());
+      _optimizer->update(tensor_a, _neg_gradients+counter, tensor.size(0), param.info());
       counter += tensor.size(0);
     }
 
@@ -133,7 +133,7 @@ public:
   }
 
   // copied parameters = original parameters + noise
-  bool add_noise(SamplingKey& sampling_key) {
+  bool add_noise(SamplingInfo& sampling_info) {
     if (!_is_sampling_agent) {
       LOG(ERROR) << "[DeepES] Original ESAgent cannot call add_noise function, please use cloned ESAgent.";
       return false;
@@ -142,11 +142,11 @@ public:
     auto sampling_params = _sampling_model->named_parameters();
     auto params = _model->named_parameters();
     int key = _sampling_method->sampling(_noise, _param_size);
-    sampling_key.add_key(key);
+    sampling_info.add_key(key);
     int64_t counter = 0;
     for (auto& param: sampling_params) {
       torch::Tensor sampling_tensor = param.value().view({-1});
-      std::string param_name = param.key();
+      std::string param_name = param.info();
       torch::Tensor tensor = params.find(param_name)->view({-1});
       auto sampling_tensor_a = sampling_tensor.accessor<float,1>();
       auto tensor_a = tensor.accessor<float,1>();
diff --git a/deepes/src/paddle/es_agent.cc b/deepes/src/paddle/es_agent.cc
index a27a0d73bc7c05308b6665bfb349c90ad6d85b5e..ed2b1b9332ce5bbb305aa5eac2cf61e28b923dc0 100644
--- a/deepes/src/paddle/es_agent.cc
+++ b/deepes/src/paddle/es_agent.cc
@@ -78,7 +78,7 @@ std::shared_ptr<ESAgent> ESAgent::clone() {
 }
 
 bool ESAgent::update(
-    std::vector<SamplingKey>& noisy_keys,
+    std::vector<SamplingInfo>& noisy_info,
     std::vector<float>& noisy_rewards) {
   if (_is_sampling_agent) {
     LOG(ERROR) << "[DeepES] Cloned ESAgent cannot call update function, please use original ESAgent.";
@@ -88,8 +88,8 @@ bool ESAgent::update(
   compute_centered_ranks(noisy_rewards);
   
   memset(_neg_gradients, 0, _param_size * sizeof(float));
-  for (int i = 0; i < noisy_keys.size(); ++i) {
-    int key = noisy_keys[i].key(0);
+  for (int i = 0; i < noisy_info.size(); ++i) {
+    int key = noisy_info[i].key(0);
     float reward = noisy_rewards[i];
     bool success = _sampling_method->resampling(key, _noise, _param_size);
     for (int64_t j = 0; j < _param_size; ++j) {
@@ -97,7 +97,7 @@ bool ESAgent::update(
     }
   }
   for (int64_t j = 0; j < _param_size; ++j) {
-    _neg_gradients[j] /= -1.0 * noisy_keys.size();
+    _neg_gradients[j] /= -1.0 * noisy_info.size();
   }
 
   //update
@@ -114,14 +114,14 @@ bool ESAgent::update(
   
 }
 
-bool ESAgent::add_noise(SamplingKey& sampling_key) {
+bool ESAgent::add_noise(SamplingInfo& sampling_info) {
   if (!_is_sampling_agent) {
     LOG(ERROR) << "[DeepES] Original ESAgent cannot call add_noise function, please use cloned ESAgent.";
     return false;
   }
 
   int key = _sampling_method->sampling(_noise, _param_size);
-  sampling_key.add_key(key);
+  sampling_info.add_key(key);
   int64_t counter = 0;
 
   for (std::string param_name: _param_names) {
diff --git a/deepes/src/proto/deepes.proto b/deepes/src/proto/deepes.proto
index 38abee970140fc7fecfb6f5c18854a43dabd06ff..c6c1c9cd95dfadd23d2b45aebc07dd5856a92d00 100644
--- a/deepes/src/proto/deepes.proto
+++ b/deepes/src/proto/deepes.proto
@@ -23,6 +23,8 @@ message DeepESConfig {
   optional GaussianSamplingConfig gaussian_sampling = 3;
   // Optimizer Configuration
   optional OptimizerConfig optimizer = 4;
+  // AsyncESAgent Configuration
+  optional AsyncESConfig async_es = 5;
 }
 
 message GaussianSamplingConfig {
@@ -40,6 +42,13 @@ message OptimizerConfig{
   optional float epsilon = 6 [default = 1e-8];
 }
 
-message SamplingKey{
+message SamplingInfo{
   repeated int32 key = 1;
+  optional int32 model_iter_id = 2;
+}
+
+message AsyncESConfig{
+  optional string model_warehouse = 1 [default = "./model_warehouse"];
+  repeated string model_md5 = 2;
+  optional int32 max_to_keep = 3 [default = 5];
 }