docs: fix license readme

LICENSE

@@ -199,3 +199,29 @@
    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.
+
+
+Open Source Software Licensed Under the Apache License, Version 2.0:
+-------------------------------------------------------------------------
+1. grpc  1.21.2
+Copyright 2014 gRPC authors.
+
+
+Open Source Software Licensed Under the BSD 3-Clause License:
+-------------------------------------------------------------------------
+1. numpy  1.16.2
+Copyright 2005-2019, NumPy Developers.
+All rights reserved.
+
+2. PyZMQ  18.0.1
+Copyright (c) 2009-2012, Brian Granger, Min Ragan-Kelley
+All rights reserved.
+
+3. protobuf 3.7.1
+Copyright 2008 Google Inc.
+All rights reserved.
+
+Open Source Software Licensed Under the MIT License:
+-------------------------------------------------------------------------
+1. ruamel.yaml  0.15.94
+Copyright (c) 2014-2019 Anthon van der Neut, Ruamel bvba

README.md

@@ -263,6 +263,14 @@ Learn how to use Jina and Torchvision to build a flower image search system
 <td><h3>🐣</h3></td>
 </tr>
 
+<tr>
+<td>
+<h4><a href="https://github.com/jina-ai/examples/tree/master/tumblr-gif-search">Video Semantic Search in Scale with Prefetching and Sharding</a></h4>
+Learn how to increase the performance by using prefetching and sharding
+</td>
+<td><h3>🕊</h3></td>
+</tr>
+
 <tr>
 <td>
 <h4><a href="https://jina-ai.github.io/docs/chapters/remote/main.html">Distribute Your Workflow Remotely</a></h4>

docs/chapters/cli/exit.rst

@@ -1,6 +1,46 @@
 Gracefully Exit Jina
 ====================
 
-In a Local Console
-------------------
-If you running Jina locally (e.g. :command:`jina flow`), you can :kbd:`Control-c` or :kbd:`Command-c` to terminate it at any time. All :class:`BasePod` will receive this signal and shutdown accordingly.
+In Python
+---------
+
+If you use ``with`` scope to start a flow, then all resources (including pods of all kinds) of the flow will be released after your move out from the scope.
+
+If you use :meth:`start` method to start the flow, then you have to call :meth:`close` to shutdown the flow when you don't use it anymore.
+
+
+In the Console
+--------------
+
+If you running Jina locally (e.g. :command:`jina flow`), you can :kbd:`Control-c` or :kbd:`Command-c` to terminate it at any time. All :class:`BasePod` will receive this signal and shutdown accordingly.
+
+Container pods and remote pods sometimes take longer to shutdown. When you open many replicas or many pods, it may also take some time to release all resources.
+
+
+Rule of thumb, for individual Pod/Pea, when you see the following output from the console, then it is shutdown already.
+
+.. highlight:: bash
+.. code-block:: bash
+
+    BaseExecutor@7317[I]:no update since 2020-04-23 20:31:10, will not save. If you really want to save it, call "touch()" before "save()" to force saving
+    BasePea@7317[I]:executor says there is nothing to save
+    BasePea@7317[I]:msg_sent: 0 bytes_sent: 0 KB msg_recv: 0 bytes_recv:0 KB
+    BasePea@7317[I]:msg_sent: 0 bytes_sent: 0 KB msg_recv: 0 bytes_recv:0 KB
+    BasePea@7317[S]:terminated
+
+
+For Flow, when you see the following output from the console, then it is shutdown already.
+
+.. highlight:: bash
+.. code-block:: bash
+
+    chunk_idx-3@6376[S]:terminated
+    chunk_idx-7@6383[I]:msg_sent: 653 bytes_sent: 590 KB msg_recv: 326 bytes_recv:956 KB
+    chunk_idx-7@6383[S]:terminated
+    chunk_idx-5@6378[I]:msg_sent: 653 bytes_sent: 587 KB msg_recv: 326 bytes_recv:948 KB
+    chunk_idx-5@6378[S]:terminated
+    chunk_idx-2@6375[I]:msg_sent: 651 bytes_sent: 583 KB msg_recv: 325 bytes_recv:939 KB
+    chunk_idx-2@6375[S]:terminated
+    chunk_idx-6@6381[I]:msg_sent: 653 bytes_sent: 589 KB msg_recv: 326 bytes_recv:953 KB
+    chunk_idx-6@6381[S]:terminated
+    Flow@6331[S]:flow is closed and all resources should be released already, current build level is EMPTY

docs/conf.py

@@ -7,8 +7,8 @@
 
 project = 'Jina'
 slug = re.sub(r'\W+', '-', project.lower())
-author = 'Jina AI Dev Team and All Contributors'
-copyright = 'Jina AI Limited'
+author = 'Jina AI Dev Team'
+copyright = 'Jina AI Limited. All rights reserved.'
 source_suffix = ['.rst', '.md']
 master_doc = 'index'
 language = 'en'