Updated Filer Change Data Capture (markdown)

Filer-Change-Data-Capture.md

@@ -2,6 +2,8 @@ Is it too much a dream to have something similar to [inotify](https://man7.org/l
 
 Actually SeaweedFS can give you more!
 
+# Example
+
 Here is an example, in Java:
 
 https://github.com/chrislusf/seaweedfs/blob/master/other/java/examples/src/main/java/com/seaweedfs/examples/WatchFiles.java
@@ -21,6 +23,18 @@ Basically there are four types of events to handle:
 | Delete | exists | null | exists | equal to Directory |
 | Rename | exists | exists | exists | not equal to Directory |
 
+# Other Languages
+
 This is based on Filer gRPC API. You should be able to easily implement it in your own language.
 
-https://github.com/chrislusf/seaweedfs/blob/master/weed/pb/filer.proto#L52
+https://github.com/chrislusf/seaweedfs/blob/master/weed/pb/filer.proto#L52
+
+# Possible Use Cases
+
+This is event processing for files. The possible use cases are all up to your imagination.
+
+* Detect new image or video files. Add versions with different resolutions.
+* A **distributed configuration distribution**: stores configuration files under a folder. Detect the configuration changes and reload. 
+* A **job queue**: upload files to a folder, and processing new files as soon as possible, and delete the processed files.
+* Do-it-yourself **Data Replication or Backup**.
+