update README

README.md

@@ -28,7 +28,7 @@ http://localhost:3000/healthcheck
 进入 server 看 log
 ```shell
 
-ssh -i de-net.pem ubuntu@34.207.131.244
+sudo ssh -i ~/.ssh/de-net.pem ubuntu@34.207.131.244
 
 sudo   su root
 

model/redis_db.js

@@ -26,7 +26,7 @@ if (process.env.NODE_ENV == 'test') {
   opts = {
     port: port,
     host: host,
-    // password: password
+    // password: passwordd
   }
   // var new_opts = "redis://"+password+"@"+host+":"+port+"/0"
   // "redis://:authpassword@127.0.0.1:6380/4"
@@ -84,7 +84,7 @@ async function readRedis(key) {
         console.log("redis_get=", result); // Prints "value"
         resolve(result);
       }).catch(e => {
-        console.log("readRedis key error=", key, e); // Prints "value"
+        console.log("readRedis key error=", key, e); // Prints "error"
       });
   })
 }