diff --git a/docs/FAQ/FAQ.rst b/docs/FAQ/FAQ.rst
index b3334e155..8ea5e9f82 100644
--- a/docs/FAQ/FAQ.rst
+++ b/docs/FAQ/FAQ.rst
@@ -63,4 +63,9 @@ It sees the key of the redis lock has existed in your redis db now. You can use
     > flushdb
 
 
-Also, feel free to post a new issue in our GitHub repository. We always look at each case individually and try to find a root cause.
\ No newline at end of file
+.. note::
+
+    ``qlib.config.redis_task_db`` defaults is ``1``, users can use ``qlib.init(redis_task_db=<other_db>)`` settings.
+
+
+Also, feel free to post a new issue in our GitHub repository. We always check each issue carefully and try our best to solve them.
diff --git a/docs/component/data.rst b/docs/component/data.rst
index ebc2ce8ad..7c374f1dd 100644
--- a/docs/component/data.rst
+++ b/docs/component/data.rst
@@ -207,7 +207,7 @@ Example
 
 Know more about how to run ``Data Handler`` with ``Estimator``, please refer to `Estimator: Workflow Management <estimator.html>`_
 
-Qlib provides implemented data handler `Alpha158`. The following example shows how to run `QLibDataHandlerV1` as a single module.
+Qlib provides implemented data handler `Alpha158`. The following example shows how to run `Alpha158` as a single module.
 
 .. note:: Users need to initialize ``Qlib`` with `qlib.init` first, please refer to `initialization <../start/initialization.html>`_.