diff --git a/doc/Model_Zoo_CN.md b/doc/Model_Zoo_CN.md
index 645523a2d6fbd01ee842dd146bb8bf290ba3ffd0..e0de7f52f1340b281266bbdc418bb10b43a2e77c 100644
--- a/doc/Model_Zoo_CN.md
+++ b/doc/Model_Zoo_CN.md
@@ -27,6 +27,8 @@
 | senta_bilstm | PaddleNLP | [C++ Serving](../examples/C++/PaddleNLP/senta) | [.tar.gz](https://paddle-serving.bj.bcebos.com/paddle_hub_models/text/SentimentAnalysis/senta_bilstm.tar.gz) |C++ Serving|
 | lac | PaddleNLP | [C++ Serving](../examples/C++/PaddleNLP/lac) | [.tar.gz](https://paddle-serving.bj.bcebos.com/paddle_hub_models/text/LexicalAnalysis/lac.tar.gz) |
 | transformer | PaddleNLP | [Pipeline Serving](https://github.com/PaddlePaddle/PaddleNLP/blob/develop/examples/machine_translation/transformer/deploy/serving/README.md) | [model](https://github.com/PaddlePaddle/PaddleNLP/tree/develop/examples/machine_translation/transformer) |
+| ELECTRA | PaddleNLP | [Pipeline Serving](https://github.com/PaddlePaddle/PaddleNLP/blob/develop/examples/language_model/electra/deploy/serving/README.md) | [model](https://github.com/PaddlePaddle/PaddleNLP/tree/develop/examples/language_model/electra) |
+| In-batch Negatives | PaddleNLP | [Pipeline Serving](https://github.com/PaddlePaddle/PaddleNLP/tree/develop/applications/neural_search/recall/in_batch_negative) | [model](https://bj.bcebos.com/v1/paddlenlp/models/inbatch_model.zip) |
 | criteo_ctr | PaddleRec | [C++ Serving](../examples/C++/PaddleRec/criteo_ctr) | [.tar.gz](https://paddle-serving.bj.bcebos.com/criteo_ctr_example/criteo_ctr_demo_model.tar.gz) |
 | criteo_ctr_with_cube | PaddleRec | [C++ Serving](../examples/C++/PaddleRec/criteo_ctr_with_cube) | [.tar.gz](https://paddle-serving.bj.bcebos.com/unittest/ctr_cube_unittest.tar.gz) |
 | wide&deep | PaddleRec | [C++ Serving](https://github.com/PaddlePaddle/PaddleRec/blob/release/2.1.0/doc/serving.md) | [model](https://github.com/PaddlePaddle/PaddleRec/blob/release/2.1.0/models/rank/wide_deep/README.md) |
diff --git a/examples/C++/PaddleNLP/bert/README.md b/examples/C++/PaddleNLP/bert/README.md
index 5d3242837f6d8be08f321d68890587e4bba725e8..64f6441f28776114346f99fc16b363aa18276f4c 100755
--- a/examples/C++/PaddleNLP/bert/README.md
+++ b/examples/C++/PaddleNLP/bert/README.md
@@ -1,4 +1,4 @@
-Http## Bert as service
+## Bert as service
 
 ([简体中文](./README_CN.md)|English)
 
diff --git a/python/paddle_serving_server/serve.py b/python/paddle_serving_server/serve.py
index 0bdfe7490d52433f5bd5f68c4454822c17675580..f9a50ea37d4cc75b92cf2d62954c3c0de88e8094 100755
--- a/python/paddle_serving_server/serve.py
+++ b/python/paddle_serving_server/serve.py
@@ -37,6 +37,11 @@ from paddle_serving_server.util import *
 from paddle_serving_server.env_check.run import check_env
 import cmd
 
+def signal_handler(signal, frame):
+    print('Process stopped')
+    sys.exit(0)
+
+signal.signal(signal.SIGINT, signal_handler)
 
 # web_service.py is still used by Pipeline.
 def port_is_available(port):