diff --git a/README.md b/README.md
index 0e58d39..5f32a4d 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,21 @@
 ## Use case
 cd to main project directory
 <br>
-run: node index.js // output: [listening on *:3000]
\ No newline at end of file
+run: node index.js // output: [listening on *:3000]
+
+### use pm2
+
+#### install
+sudo npm install pm2@latest -g
+
+#### start
+pm2 start index.js
+
+#### monitor
+pm2 monit
+
+#### document
+[pm2 quick start](https://pm2.keymetrics.io/docs/usage/quick-start/)
+
+
+
diff --git a/index.js b/index.js
index 60746a8..6c77464 100644
--- a/index.js
+++ b/index.js
@@ -52,7 +52,7 @@ io.on('connection', async (socket) => {
 // });
 
 app.post('/emit/:room', function (req, res) {
-    console.log(req.body);
+    // console.log(req.body);
     io.to('room-' + req.params.room).emit('room-event', req.body.data.title);
     res.send('done');
 });