From 3b8087677c6e692f4dfcc289f04df98ea8689ce1 Mon Sep 17 00:00:00 2001
From: you-n-g <you-n-g@users.noreply.github.com>
Date: Fri, 16 Jul 2021 12:24:33 +0800
Subject: [PATCH] Update online.rst

---
 docs/component/online.rst | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/docs/component/online.rst b/docs/component/online.rst
index accc936dd..22a6afaf9 100644
--- a/docs/component/online.rst
+++ b/docs/component/online.rst
@@ -21,6 +21,8 @@ which including `Online Manager <#Online Manager>`_, `Online Strategy <#Online S
 If you have many models or `task` needs to be managed, please consider `Task Management <../advanced/task_management.html>`_.
 The `examples <https://github.com/microsoft/qlib/tree/main/examples/online_srv>`_ are based on some components in `Task Management <../advanced/task_management.html>`_ such as ``TrainerRM`` or ``Collector``.
 
+**NOTE**: User should keep his data source updated to support online serving. For example, Qlib provides `a batch of scripts <https://github.com/microsoft/qlib/blob/main/scripts/data_collector/yahoo/README.md#automatic-update-of-daily-frequency-datafrom-yahoo-finance>`_ to help users update Yahoo daily data.
+
 Online Manager
 =============
 
@@ -43,4 +45,4 @@ Updater
 =============
 
 .. automodule:: qlib.workflow.online.update
-    :members:
\ No newline at end of file
+    :members: