diff --git a/Filer-Server-API.md b/Filer-Server-API.md
index dd689ea..b4fd08d 100644
--- a/Filer-Server-API.md
+++ b/Filer-Server-API.md
@@ -15,6 +15,12 @@ You can append to any HTTP API with &pretty=y to see a formatted json output.
 	//return a json format subdirectory and files listing
 	GET /path/to/
         Accept: application/json
+
+# options for POST a file:
+	// set file TTL for Cassandra or Redis filer store.
+	POST /path/to/file?ttl=1d
+	// set file mode when creating or overwriting a file
+	POST /path/to/file?mode=0755
 ```
 Examples:
 ```bash