diff --git a/backend/services/connection_service.go b/backend/services/connection_service.go
index db72843..cc698e8 100644
--- a/backend/services/connection_service.go
+++ b/backend/services/connection_service.go
@@ -129,7 +129,7 @@ func (c *connectionService) SaveSortedConnection(sortedConns types.Connections)
 	return
 }
 
-// CreateGroup create new group
+// CreateGroup create a new group
 func (c *connectionService) CreateGroup(name string) (resp types.JSResp) {
 	err := c.conns.CreateGroup(name)
 	if err != nil {
@@ -151,7 +151,7 @@ func (c *connectionService) RenameGroup(name, newName string) (resp types.JSResp
 	return
 }
 
-// DeleteGroup remove group by name
+// DeleteGroup remove a group by name
 func (c *connectionService) DeleteGroup(name string, includeConn bool) (resp types.JSResp) {
 	err := c.conns.DeleteGroup(name, includeConn)
 	if err != nil {
diff --git a/frontend/src/components/content/ContentPane.vue b/frontend/src/components/content/ContentPane.vue
index bf07bc3..3015602 100644
--- a/frontend/src/components/content/ContentPane.vue
+++ b/frontend/src/components/content/ContentPane.vue
@@ -1,5 +1,5 @@
 <script setup>
-import { computed } from 'vue'
+import { computed, onMounted, onUnmounted, ref } from 'vue'
 import { types } from '../../consts/support_redis_type.js'
 import ContentValueHash from '../content_value/ContentValueHash.vue'
 import ContentValueList from '../content_value/ContentValueList.vue'
@@ -12,6 +12,35 @@ import { useDialog } from 'naive-ui'
 import useConnectionStore from '../../stores/connections.js'
 import { useI18n } from 'vue-i18n'
 import { useConfirmDialog } from '../../utils/confirm_dialog.js'
+import ContentServerStatus from '../content_value/ContentServerStatus.vue'
+
+const serverInfo = ref({})
+const autoRefresh = ref(false)
+const serverName = computed(() => {
+    if (tabContent.value != null) {
+        return tabContent.value.name
+    }
+    return ''
+})
+const refreshInfo = async () => {
+    if (!isEmpty(serverName.value) && connectionStore.isConnected(serverName.value)) {
+        serverInfo.value = await connectionStore.getServerInfo(serverName.value)
+    }
+}
+
+let intervalId
+onMounted(() => {
+    refreshInfo()
+    intervalId = setInterval(() => {
+        if (autoRefresh.value) {
+            refreshInfo()
+        }
+    }, 5000)
+})
+
+onUnmounted(() => {
+    clearInterval(intervalId)
+})
 
 const valueComponents = {
     [types.STRING]: ContentValueString,
@@ -31,10 +60,6 @@ const tab = computed(() =>
     }))
 )
 
-/**
- *
- * @type {ComputedRef<TabItem>}
- */
 const tabContent = computed(() => {
     const tab = tabStore.currentTab
     if (tab == null) {
@@ -50,6 +75,14 @@ const tabContent = computed(() => {
     }
 })
 
+const showServerStatus = computed(() => {
+    return tabContent.value == null || isEmpty(tabContent.value.keyPath)
+})
+
+const showNonexists = computed(() => {
+    return tabContent.value.value == null
+})
+
 const onUpdateValue = (tabIndex) => {
     tabStore.switchTab(tabIndex)
 }
@@ -95,10 +128,11 @@ const onCloseTab = (tabIndex) => {
         </n-tabs>
         <!-- TODO: add loading status -->
 
-        <div v-if="tabContent == null || isEmpty(tabContent.keyPath)" class="flex-item-expand flex-box-v">
-            <n-empty :description="$t('empty_tab_content')" class="empty-content" />
+        <div v-if="showServerStatus" class="content-container flex-item-expand flex-box-v">
+            <!-- select nothing or select server node, display server status -->
+            <content-server-status v-model:auto-refresh="autoRefresh" :server="serverName" :info="serverInfo" />
         </div>
-        <div v-else-if="tabContent.value == null" class="flex-item-expand flex-box-v">
+        <div v-else-if="showNonexists" class="content-container flex-item-expand flex-box-v">
             <n-empty :description="$t('nonexist_tab_content')" class="empty-content">
                 <template #extra>
                     <n-button @click="onReloadKey">{{ $t('reload') }}</n-button>
@@ -119,6 +153,12 @@ const onCloseTab = (tabIndex) => {
 
 <style lang="scss" scoped>
 @import 'content';
+
+.content-container {
+    padding: 5px;
+    box-sizing: border-box;
+}
+
 //.tab-item {
 //    gap: 5px;
 //    padding: 0 5px 0 10px;
diff --git a/frontend/src/components/content/ContentServerPane.vue b/frontend/src/components/content/ContentServerPane.vue
index 846bcc7..1cd1ae8 100644
--- a/frontend/src/components/content/ContentServerPane.vue
+++ b/frontend/src/components/content/ContentServerPane.vue
@@ -1,45 +1,14 @@
 <script setup>
-import useDialog from '../../stores/dialog.js'
 import AddLink from '../icons/AddLink.vue'
-import { computed, onMounted, onUnmounted, ref, watch } from 'vue'
-import useConnectionStore from '../../stores/connections.js'
-import { isEmpty } from 'lodash'
-import ContentServerStatus from '../content_value/ContentServerStatus.vue'
+import { useDialog } from 'naive-ui'
 
 const dialogStore = useDialog()
-const connectionStore = useConnectionStore()
-const serverInfo = ref({})
-const autoRefresh = ref(true)
-
-const refreshInfo = async () => {
-    const server = connectionStore.selectedServer
-    if (!isEmpty(server) && connectionStore.isConnected(server)) {
-        serverInfo.value = await connectionStore.getServerInfo(server)
-    }
-}
-
-let intervalId
-onMounted(() => {
-    intervalId = setInterval(() => {
-        if (autoRefresh.value) {
-            refreshInfo()
-        }
-    }, 5000)
-})
-
-onUnmounted(() => {
-    clearInterval(intervalId)
-})
-
-watch(() => connectionStore.selectedServer, refreshInfo)
-
-const hasContent = computed(() => !isEmpty(serverInfo.value))
 </script>
 
 <template>
-    <div class="content-container flex-box-v" :style="{ 'justify-content': hasContent ? 'flex-start' : 'center' }">
+    <div class="content-container flex-box-v">
         <!-- TODO: replace icon to app icon -->
-        <n-empty v-if="!hasContent" :description="$t('empty_server_content')">
+        <n-empty :description="$t('empty_server_content')">
             <template #extra>
                 <n-button @click="dialogStore.openNewDialog()">
                     <template #icon>
@@ -49,12 +18,6 @@ const hasContent = computed(() => !isEmpty(serverInfo.value))
                 </n-button>
             </template>
         </n-empty>
-        <content-server-status
-            v-else
-            v-model:auto-refresh="autoRefresh"
-            :server="connectionStore.selectedServer"
-            :info="serverInfo"
-        />
     </div>
 </template>
 
@@ -62,7 +25,7 @@ const hasContent = computed(() => !isEmpty(serverInfo.value))
 @import 'content';
 
 .content-container {
-    //justify-content: center;
+    justify-content: center;
     padding: 5px;
     box-sizing: border-box;
 }
diff --git a/frontend/src/components/content_value/ContentServerStatus.vue b/frontend/src/components/content_value/ContentServerStatus.vue
index 2dc7348..992a10e 100644
--- a/frontend/src/components/content_value/ContentServerStatus.vue
+++ b/frontend/src/components/content_value/ContentServerStatus.vue
@@ -123,8 +123,8 @@ const onFilterInfo = (val) => {
                     </n-gi>
                     <n-gi :span="6">
                         <n-statistic :value="totalKeys">
-                            <template #label
-                                >{{ $t('total_keys') }}
+                            <template #label>
+                                {{ $t('total_keys') }}
                                 <n-icon :component="Help" />
                             </template>
                         </n-statistic>
diff --git a/frontend/src/components/sidebar/BrowserTree.vue b/frontend/src/components/sidebar/BrowserTree.vue
index 28aaab2..44699bd 100644
--- a/frontend/src/components/sidebar/BrowserTree.vue
+++ b/frontend/src/components/sidebar/BrowserTree.vue
@@ -1,10 +1,10 @@
 <script setup>
-import { h, nextTick, onMounted, reactive, ref } from 'vue'
+import { computed, h, nextTick, onMounted, reactive, ref } from 'vue'
 import { ConnectionType } from '../../consts/connection_type.js'
 import { NIcon, useDialog, useMessage } from 'naive-ui'
 import Key from '../icons/Key.vue'
 import ToggleDb from '../icons/ToggleDb.vue'
-import { indexOf, isEmpty } from 'lodash'
+import { get, indexOf, isEmpty } from 'lodash'
 import { useI18n } from 'vue-i18n'
 import Refresh from '../icons/Refresh.vue'
 import CopyLink from '../icons/CopyLink.vue'
@@ -16,15 +16,33 @@ import useDialogStore from '../../stores/dialog.js'
 import { ClipboardSetText } from '../../../wailsjs/runtime/runtime.js'
 import useConnectionStore from '../../stores/connections.js'
 import { useConfirmDialog } from '../../utils/confirm_dialog.js'
+import ToggleServer from '../icons/ToggleServer.vue'
+import Unlink from '../icons/Unlink.vue'
+
+const props = defineProps({
+    server: String,
+})
 
 const i18n = useI18n()
 const loading = ref(false)
 const loadingConnections = ref(false)
-const expandedKeys = ref([])
-const selectedKeys = ref([])
+const expandedKeys = ref([props.server])
+const selectedKeys = ref([props.server])
 const connectionStore = useConnectionStore()
 const dialogStore = useDialogStore()
 
+const data = computed(() => {
+    const dbs = get(connectionStore.databases, props.server, [])
+    return [
+        {
+            key: props.server,
+            label: props.server,
+            type: ConnectionType.Server,
+            children: dbs,
+        },
+    ]
+})
+
 const contextMenuParam = reactive({
     show: false,
     x: 0,
@@ -40,6 +58,21 @@ const renderIcon = (icon) => {
     }
 }
 const menuOptions = {
+    [ConnectionType.Server]: () => {
+        console.log('open server context')
+        return [
+            {
+                key: 'server_reload',
+                label: i18n.t('reload'),
+                icon: renderIcon(Refresh),
+            },
+            {
+                key: 'server_close',
+                label: i18n.t('disconnect'),
+                icon: renderIcon(Unlink),
+            },
+        ]
+    },
     [ConnectionType.RedisDB]: ({ opened }) => {
         if (opened) {
             return [
@@ -127,10 +160,6 @@ onMounted(async () => {
     }
 })
 
-const props = defineProps({
-    server: String,
-})
-
 const expandKey = (key) => {
     const idx = indexOf(expandedKeys.value, key)
     if (idx === -1) {
@@ -159,24 +188,37 @@ const onUpdateExpanded = (value, option, meta) => {
 }
 
 const onUpdateSelectedKeys = (keys, options) => {
-    if (!isEmpty(options)) {
-        // prevent load duplicate key
-        for (const node of options) {
-            if (node.type === ConnectionType.RedisValue) {
-                const { key, name, db, redisKey } = node
-                if (indexOf(selectedKeys.value, key) === -1) {
-                    connectionStore.loadKeyValue(name, db, redisKey)
+    try {
+        if (!isEmpty(options)) {
+            // prevent load duplicate key
+            for (const node of options) {
+                if (node.type === ConnectionType.RedisValue) {
+                    const { key, db, redisKey } = node
+                    if (indexOf(selectedKeys.value, key) === -1) {
+                        connectionStore.loadKeyValue(props.server, db, redisKey)
+                    }
+                    return
                 }
-                break
             }
-        }
-    }
 
-    selectedKeys.value = keys
+            // default is load blank key to display server status
+            connectionStore.loadKeyValue(props.server, 0)
+        }
+    } finally {
+        selectedKeys.value = keys
+    }
 }
 
 const renderPrefix = ({ option }) => {
     switch (option.type) {
+        case ConnectionType.Server:
+            return h(
+                NIcon,
+                { size: 20 },
+                {
+                    default: () => h(ToggleServer, { modelValue: false }),
+                }
+            )
         case ConnectionType.RedisDB:
             return h(
                 NIcon,
@@ -258,7 +300,7 @@ const onLoadTree = async (node) => {
         case ConnectionType.RedisDB:
             loading.value = true
             try {
-                await connectionStore.openDatabase(node.name, node.db)
+                await connectionStore.openDatabase(props.server, node.db)
             } catch (e) {
                 message.error(e.message)
                 node.isLeaf = undefined
@@ -276,30 +318,38 @@ const onLoadTree = async (node) => {
 const confirmDialog = useConfirmDialog()
 const handleSelectContextMenu = (key) => {
     contextMenuParam.show = false
-    const { name, db, key: nodeKey, redisKey } = contextMenuParam.currentNode
+    const { db, key: nodeKey, redisKey } = contextMenuParam.currentNode
     switch (key) {
+        case 'server_reload':
+            connectionStore.openConnection(props.server, true).then(() => {
+                message.success(i18n.t('reload_succ'))
+            })
+            break
+        case 'server_close':
+            connectionStore.closeConnection(props.server)
+            break
         case 'db_open':
             nextTick().then(() => expandKey(nodeKey))
             break
         case 'db_reload':
-            connectionStore.reopenDatabase(name, db)
+            connectionStore.reopenDatabase(props.server, db)
             break
         case 'db_newkey':
         case 'key_newkey':
-            dialogStore.openNewKeyDialog(redisKey, name, db)
+            dialogStore.openNewKeyDialog(redisKey, props.server, db)
             break
         case 'key_reload':
-            connectionStore.loadKeys(name, db, redisKey)
+            connectionStore.loadKeys(props.server, db, redisKey)
             break
         case 'value_reload':
-            connectionStore.loadKeyValue(name, db, redisKey)
+            connectionStore.loadKeyValue(props.server, db, redisKey)
             break
         case 'key_remove':
-            dialogStore.openDeleteKeyDialog(name, db, redisKey + ':*')
+            dialogStore.openDeleteKeyDialog(props.server, db, redisKey + ':*')
             break
         case 'value_remove':
             confirmDialog.warning(i18n.t('remove_tip', { name: redisKey }), () => {
-                connectionStore.deleteKey(name, db, redisKey).then((success) => {
+                connectionStore.deleteKey(props.server, db, redisKey).then((success) => {
                     if (success) {
                         message.success(i18n.t('delete_key_succ', { key: redisKey }))
                     }
@@ -334,7 +384,7 @@ const handleOutsideContextMenu = () => {
         :block-node="true"
         :animated="false"
         :cancelable="false"
-        :data="connectionStore.databases[props.server] || []"
+        :data="data"
         :expand-on-click="false"
         :expanded-keys="expandedKeys"
         :selected-keys="selectedKeys"
diff --git a/frontend/src/components/sidebar/ConnectionTree.vue b/frontend/src/components/sidebar/ConnectionTree.vue
index a092a6d..5389efa 100644
--- a/frontend/src/components/sidebar/ConnectionTree.vue
+++ b/frontend/src/components/sidebar/ConnectionTree.vue
@@ -27,18 +27,6 @@ const message = useMessage()
 const expandedKeys = ref([])
 const selectedKeys = ref([])
 
-watch(selectedKeys, () => {
-    const key = selectedKeys.value[0]
-    // try to remove group name
-    const kparts = split(key, '/')
-    const len = size(kparts)
-    if (len > 1) {
-        connectionStore.selectedServer = kparts[len - 1]
-    } else {
-        connectionStore.selectedServer = selectedKeys.value[0]
-    }
-})
-
 const props = defineProps({
     filterPattern: {
         type: String,
diff --git a/frontend/src/langs/en.json b/frontend/src/langs/en.json
index dfc87bb..a8ce889 100644
--- a/frontend/src/langs/en.json
+++ b/frontend/src/langs/en.json
@@ -124,7 +124,6 @@
   "field_required": "This item should not be blank",
   "spec_field_required": "\"{key}\" should not be blank",
   "no_connections": "No Connection",
-  "empty_tab_content": "Select the key from left list to see detail.",
   "nonexist_tab_content": "The selected key does not exist. Please retry",
   "empty_server_content": "Connect server from left list",
   "reload_when_succ": "Reload immediately after success",
diff --git a/frontend/src/langs/zh-cn.json b/frontend/src/langs/zh-cn.json
index 0edae14..2afd052 100644
--- a/frontend/src/langs/zh-cn.json
+++ b/frontend/src/langs/zh-cn.json
@@ -127,7 +127,6 @@
   "field_required": "此项不能为空",
   "spec_field_required": "{key} 不能为空",
   "no_connections": "空空如也",
-  "empty_tab_content": "可以从左边选择键来查看键的详细内容",
   "nonexist_tab_content": "所选键不存在，请尝试刷新重试",
   "empty_server_content": "可以从左边选择并打开连接",
   "reload_when_succ": "操作成功后立即重新加载",
diff --git a/frontend/src/stores/connections.js b/frontend/src/stores/connections.js
index 6e44be3..caef830 100644
--- a/frontend/src/stores/connections.js
+++ b/frontend/src/stores/connections.js
@@ -1,5 +1,5 @@
 import { defineStore } from 'pinia'
-import { endsWith, findIndex, get, isEmpty, last, size, split, uniq } from 'lodash'
+import { endsWith, findIndex, get, isEmpty, size, split, uniq } from 'lodash'
 import {
     AddHashField,
     AddListItem,
@@ -71,7 +71,6 @@ const useConnectionStore = defineStore('connections', {
     state: () => ({
         groups: [], // all group name set
         connections: [], // all connections
-        selectedServer: '', // current selected server
         serverStats: {}, // current server status info
         databases: {}, // all databases in opened connections group by server name
         nodeMap: {}, // all node in opened connections group by server+db and key+type
@@ -301,6 +300,7 @@ const useConnectionStore = defineStore('connections', {
             }
 
             delete this.databases[name]
+            delete this.serverStats[name]
 
             const tabStore = useTabStore()
             tabStore.removeTabByName(name)
@@ -308,7 +308,7 @@ const useConnectionStore = defineStore('connections', {
         },
 
         /**
-         * close all connection
+         * close all connections
          * @returns {Promise<void>}
          */
         async closeAllConnection() {
@@ -338,7 +338,7 @@ const useConnectionStore = defineStore('connections', {
         },
 
         /**
-         * create connection group
+         * create a connection group
          * @param name
          * @returns {Promise<{success: boolean, [msg]: string}>}
          */
@@ -441,34 +441,37 @@ const useConnectionStore = defineStore('connections', {
 
         /**
          * load redis key
-         * @param server
-         * @param db
-         * @param key
+         * @param {string} server
+         * @param {number} db
+         * @param {string} [key] when key is null or blank, update tab to display normal content (blank content or server status)
          */
         async loadKeyValue(server, db, key) {
             try {
-                const { data, success, msg } = await GetKeyValue(server, db, key)
                 const tab = useTabStore()
-                if (success) {
-                    const { type, ttl, value } = data
-                    tab.upsertTab({
-                        server,
-                        db,
-                        type,
-                        ttl,
-                        key,
-                        value,
-                    })
-                } else {
-                    tab.upsertTab({
-                        server,
-                        db,
-                        type: 'none',
-                        ttl: -1,
-                        key,
-                        value: null,
-                    })
+                if (!isEmpty(key)) {
+                    const { data, success, msg } = await GetKeyValue(server, db, key)
+                    if (success) {
+                        const { type, ttl, value } = data
+                        tab.upsertTab({
+                            server,
+                            db,
+                            type,
+                            ttl,
+                            key,
+                            value,
+                        })
+                        return
+                    }
                 }
+
+                tab.upsertTab({
+                    server,
+                    db,
+                    type: 'none',
+                    ttl: -1,
+                    key: null,
+                    value: null,
+                })
             } finally {
             }
         },
@@ -582,7 +585,6 @@ const useConnectionStore = defineStore('connections', {
                             selectedNode = {
                                 key: `${connName}/db${db}${nodeKey}`,
                                 label: keyPart[i],
-                                name: connName,
                                 db,
                                 keys: 0,
                                 redisKey: handlePath,
@@ -601,7 +603,6 @@ const useConnectionStore = defineStore('connections', {
                         const selectedNode = {
                             key: `${connName}/db${db}${nodeKey}`,
                             label: keyPart[i],
-                            name: connName,
                             db,
                             keys: 0,
                             redisKey: handlePath,
@@ -612,7 +613,6 @@ const useConnectionStore = defineStore('connections', {
                         children.push(selectedNode)
                     }
                 }
-                console.log('count:', ++count)
             }
         },