diff --git a/client/redux/actions/sizes.js b/client/redux/actions/sizes.js
index 1d82677d..5d4198e4 100644
--- a/client/redux/actions/sizes.js
+++ b/client/redux/actions/sizes.js
@@ -1,3 +1,3 @@
 import {createAction} from 'Utils';
 
-export const setSize = createAction('SET_SIZE', (type, value) => ({type, value}))
+export const setSize = createAction('SET_SIZE', (type, value) => ({type, value: Number(value)}))
diff --git a/client/windows/MainWindow/components/InstanceContent/components/ConnectionSelectorContainer/components/Config/index.jsx b/client/windows/MainWindow/components/InstanceContent/components/ConnectionSelectorContainer/components/Config/index.jsx
index 2ab6ea0a..53343113 100644
--- a/client/windows/MainWindow/components/InstanceContent/components/ConnectionSelectorContainer/components/Config/index.jsx
+++ b/client/windows/MainWindow/components/InstanceContent/components/ConnectionSelectorContainer/components/Config/index.jsx
@@ -8,7 +8,7 @@ import fs from 'fs'
 
 require('./index.scss')
 
-class Config extends React.Component {
+class Config extends React.PureComponent {
   constructor() {
     super()
     this.state = {
diff --git a/client/windows/MainWindow/components/InstanceContent/components/ConnectionSelectorContainer/components/Favorite.jsx b/client/windows/MainWindow/components/InstanceContent/components/ConnectionSelectorContainer/components/Favorite.jsx
index eb43598c..3eaeb950 100644
--- a/client/windows/MainWindow/components/InstanceContent/components/ConnectionSelectorContainer/components/Favorite.jsx
+++ b/client/windows/MainWindow/components/InstanceContent/components/ConnectionSelectorContainer/components/Favorite.jsx
@@ -3,7 +3,7 @@
 import React from 'react'
 import Sortable from 'sortablejs'
 
-class Favorite extends React.Component {
+class Favorite extends React.PureComponent {
   constructor() {
     super()
     this.state = {
diff --git a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/AddButton/index.jsx b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/AddButton/index.jsx
index f06f684b..1935b1e3 100644
--- a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/AddButton/index.jsx
+++ b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/AddButton/index.jsx
@@ -2,7 +2,7 @@ import React from 'react'
 
 require('./index.scss')
 
-export default class AddButton extends React.Component {
+export default class AddButton extends React.PureComponent {
   render() {
     return (<div className="AddButton">
       {this.props.title}
diff --git a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/Footer.jsx b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/Footer.jsx
index 0f9b7965..d8917d29 100644
--- a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/Footer.jsx
+++ b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/Footer.jsx
@@ -11,7 +11,7 @@ const timeScale = new humanFormat.Scale({
   d: 86400000
 })
 
-class Footer extends React.Component {
+class Footer extends React.PureComponent {
   constructor() {
     super()
     this.resetState(true)
diff --git a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/Editor/index.scss b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/Editor/index.scss
index f1b19be8..4cf5b332 100644
--- a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/Editor/index.scss
+++ b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/Editor/index.scss
@@ -15,10 +15,6 @@
     font-family: Consolas, monospace;
   }
 
-  .CodeMirror-scroll {
-    // flex: 1;
-  }
-
   .ReactCodeMirror {
     position: relative;
     flex: 1;
diff --git a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/HashContent.jsx b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/HashContent.jsx
index 3ad05348..9bc820d1 100644
--- a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/HashContent.jsx
+++ b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/HashContent.jsx
@@ -138,7 +138,7 @@ class HashContent extends BaseContent {
 
   render() {
     return (<SplitPane
-        minSize="80"
+        minSize={80}
         split="vertical"
         ref="node"
         defaultSize={this.props.contentBarWidth}
diff --git a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/ListContent.jsx b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/ListContent.jsx
index 87828262..9ae86bfb 100644
--- a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/ListContent.jsx
+++ b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/ListContent.jsx
@@ -148,7 +148,7 @@ class ListContent extends BaseContent {
 
   render() {
     return (<SplitPane
-        minSize="80"
+        minSize={80}
         split="vertical"
         ref="node"
         defaultSize={this.props.contentBarWidth}
diff --git a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/SetContent.jsx b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/SetContent.jsx
index 29c767ce..3ef93ff4 100644
--- a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/SetContent.jsx
+++ b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/SetContent.jsx
@@ -144,7 +144,7 @@ class SetContent extends BaseContent {
   render() {
     return (<SplitPane
       className="pane-group"
-      minSize="80"
+      minSize={80}
       split="vertical"
       ref="node"
       defaultSize={this.props.contentBarWidth}
diff --git a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/ZSetContent.jsx b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/ZSetContent.jsx
index 656c0345..a0574c2b 100644
--- a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/ZSetContent.jsx
+++ b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/KeyContent/components/ZSetContent.jsx
@@ -149,7 +149,7 @@ class ZSetContent extends BaseContent {
 
   render() {
     return (<SplitPane
-        minSize="80"
+        minSize={80}
         split="vertical"
         ref="node"
         defaultSize={this.props.contentBarWidth}
diff --git a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/TabBar/index.jsx b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/TabBar/index.jsx
index f9ae844c..b9c9086b 100644
--- a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/TabBar/index.jsx
+++ b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/TabBar/index.jsx
@@ -4,7 +4,7 @@ import React from 'react'
 
 require('./index.scss')
 
-class Content extends React.Component {
+class Content extends React.PureComponent {
   constructor() {
     super()
 
diff --git a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/Terminal/index.jsx b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/Terminal/index.jsx
index a79b116c..5be306f2 100644
--- a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/Terminal/index.jsx
+++ b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/components/Terminal/index.jsx
@@ -6,7 +6,7 @@ import splitargs from 'redis-splitargs'
 
 require('./index.scss')
 
-class Terminal extends React.Component {
+class Terminal extends React.PureComponent {
   constructor() {
     super()
     this.onSelectBinded = this.onSelect.bind(this)
diff --git a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/index.jsx b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/index.jsx
index 83c50593..865a81ed 100644
--- a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/index.jsx
+++ b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/components/Content/index.jsx
@@ -7,7 +7,7 @@ import Terminal from './components/Terminal'
 import Config from './components/Config'
 import Footer from './components/Footer'
 
-class Content extends React.Component {
+class Content extends React.PureComponent {
   constructor() {
     super()
     this.state = {
diff --git a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/index.jsx b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/index.jsx
index 67b59a3a..4bbaa536 100644
--- a/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/index.jsx
+++ b/client/windows/MainWindow/components/InstanceContent/components/DatabaseContainer/index.jsx
@@ -7,7 +7,7 @@ import KeyBrowser from './components/KeyBrowser'
 import Content from './components/Content'
 require('./index.scss')
 
-class Database extends React.Component {
+class Database extends React.PureComponent {
   constructor() {
     super()
     this.$window = $(window)
@@ -46,8 +46,8 @@ class Database extends React.Component {
   render() {
     return (<SplitPane
       className="pane-group"
-      minSize="250"
       split="vertical"
+      minSize={250}
       defaultSize={260}
       ref="node"
       onChange={size => {
diff --git a/package.json b/package.json
index 8ec1f9e3..54eb3b5d 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "description": "GUI for Redis",
   "productName": "Medis",
   "version": "0.6.1",
-  "electronVersion": "1.6.2",
+  "electronVersion": "1.4.15",
   "license": "MIT",
   "author": "luin <i@zihua.li> (http://zihua.li)",
   "main": "server/main.js",
@@ -71,7 +71,7 @@
     "conventional-github-releaser": "^0.5.3",
     "css-loader": "^0.19.0",
     "cz-conventional-changelog": "^1.1.5",
-    "electron": "1.5.1",
+    "electron": "1.4.15",
     "electron-osx-sign": "^0.4.4",
     "electron-packager": "^8.6.0",
     "eslint-config-xo": "^0.18.1",
diff --git a/patternManager.js b/patternManager.js
index 7d496129..82aea639 100644
--- a/patternManager.js
+++ b/patternManager.js
@@ -46260,7 +46260,7 @@
 	var _Utils = __webpack_require__(260);
 
 	var setSize = (0, _Utils.createAction)('SET_SIZE', function (type, value) {
-	  return { type: type, value: value };
+	  return { type: type, value: Number(value) };
 	});
 	exports.setSize = setSize;