diff --git a/ROADMAP.md b/ROADMAP.md
index ce6d982..a363e62 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -48,26 +48,26 @@
 - [x] **连接颜色标记** — 每个连接可选颜色（预定义色板）
 - [x] **连接拖拽排序** — Sortable.js 拖拽重排连接列表
 - [x] **复制连接** — 右键复制现有连接配置
-- [ ] **侧边栏可拖拽** — 调整宽度 200–1500px，持久化
+- [x] **侧边栏可拖拽** — 调整宽度 200–1500px，持久化
 - [ ] **DB 自定义名称** — 用户可重命名 DB0 → 生产库，下拉显示
-- [ ] **DB key 数量显示** — 下拉框显示每个 DB 的 key 数量
-- [ ] **DB 数量自动检测** — CONFIG GET databases + INFO keyspace
-- [ ] **DB 记忆** — 每个连接记住最后选择的数据库
+- [x] **DB key 数量显示** — 下拉框显示每个 DB 的 key 数量
+- [x] **DB 数量自动检测** — CONFIG GET databases + INFO keyspace
+- [x] **DB 记忆** — 每个连接记住最后选择的数据库
 - [ ] **更多语言** — de/es/fr/it/ko/pt/ru/tr/ua/vi/tw（当前仅 en/zh-CN）
 - [ ] **页面缩放** — 0.5x–2.0x 缩放控制
 - [ ] **自定义字体** — 用户可选等宽字体
-- [ ] **SlowLog 配置显示** — slowlog-log-slower-than / slowlog-max-len
+- [x] **SlowLog 配置显示** — slowlog-log-slower-than / slowlog-max-len
 - [ ] **Cluster SlowLog** — 每个 master 节点分别查询
 - [ ] **Cluster Keyspace 表** — 集群模式显示各节点 key 数量
-- [ ] **Status 自动刷新开关** — 可暂停/恢复的刷新（当前固定 1s）
-- [ ] **Status 搜索过滤** — INFO 表格搜索
-- [ ] **Key 统计表** — 每个 DB 的 Keys/Expires/Avg TTL 排序表
-- [ ] **大值保护** — >20MB 显示占位符而非崩溃
-- [ ] **Hash 字段 TTL** — Redis 7.4+ HEXPIRE 支持
-- [ ] **Editor 行内过滤** — 每个编辑器的表头搜索
-- [ ] **Zset 排序切换** — ASC/DESC 单选按钮
-- [ ] **CLI 自动同步** — CLI 执行 SELECT 后自动同步 UI
-- [ ] **CLI 执行后刷新 key 列表** — set/hset/del 等命令后自动刷新
+- [x] **Status 自动刷新开关** — 可暂停/恢复的刷新（当前固定 1s）
+- [x] **Status 搜索过滤** — INFO 表格搜索
+- [x] **Key 统计表** — 每个 DB 的 Keys/Expires/Avg TTL 排序表
+- [x] **大值保护** — >20MB 显示占位符而非崩溃
+- [x] **Hash 字段 TTL** — Redis 7.4+ HEXPIRE 支持
+- [x] **Editor 行内过滤** — 每个编辑器的表头搜索
+- [x] **Zset 排序切换** — ASC/DESC 单选按钮
+- [x] **CLI 自动同步** — CLI 执行 SELECT 后自动同步 UI
+- [x] **CLI 执行后刷新 key 列表** — set/hset/del 等命令后自动刷新
 - [ ] **标签页滚轮切换** — 鼠标滚轮切换标签
 - [ ] **标签页右键菜单** — 关闭/关闭其他/关闭左侧/关闭右侧
 - [ ] **Element Plus 深色适配** — 所有组件无白底
diff --git a/src/components/DbSelector.vue b/src/components/DbSelector.vue
index 3e93b6c..3fb87c9 100644
--- a/src/components/DbSelector.vue
+++ b/src/components/DbSelector.vue
@@ -1,21 +1,77 @@
 <script setup lang="ts">
 // src/components/DbSelector.vue
-import { ref, watch } from 'vue'
+import { ref, watch, computed } from 'vue'
 import { useConnectionStore } from '@renderer/stores/connection'
 import { useKeyStore } from '@renderer/stores/key'
+import { useI18n } from '@renderer/i18n'
 
 const connStore = useConnectionStore()
 const keyStore = useKeyStore()
+const { t } = useI18n()
 
 const selectedDb = ref(0)
-const dbs = Array.from({ length: 16 }, (_, i) => i)
+const dbCount = ref(16)
+const dbKeyCounts = ref<Record<number, number>>({})
+
+const dbList = computed(() => {
+  return Array.from({ length: dbCount.value }, (_, i) => {
+    const count = dbKeyCounts.value[i]
+    const label = count !== undefined && count > 0
+      ? `DB${i} (${t('db.keyCount', { n: count })})`
+      : count === 0
+        ? `DB${i} (${t('db.noKeys')})`
+        : `DB${i}`
+    return { value: i, label }
+  })
+})
+
+async function fetchDbInfo() {
+  if (!connStore.activeId) return
+  try {
+    // Get actual DB count from CONFIG GET databases
+    const configResult = await window.electronAPI.redis.execute(
+      connStore.activeId, 'CONFIG', ['GET', 'databases']
+    )
+    if (configResult && configResult[1]) {
+      dbCount.value = parseInt(configResult[1], 10) || 16
+    }
+  } catch {
+    dbCount.value = 16
+  }
+
+  try {
+    // Parse INFO keyspace for per-DB key counts
+    const info = await connStore.getInfo()
+    const keyspace: Record<number, number> = {}
+    const match = info.match(/# Keyspace[\s\S]*?(?=\n#|$)/)
+    if (match) {
+      const lines = match[0].split('\n')
+      for (const line of lines) {
+        const dbMatch = line.match(/^db(\d+):keys=(\d+)/)
+        if (dbMatch) {
+          keyspace[parseInt(dbMatch[1], 10)] = parseInt(dbMatch[2], 10)
+        }
+      }
+    }
+    // Mark DBs with 0 keys explicitly
+    for (let i = 0; i < dbCount.value; i++) {
+      if (!(i in keyspace)) {
+        keyspace[i] = 0
+      }
+    }
+    dbKeyCounts.value = keyspace
+  } catch {
+    dbKeyCounts.value = {}
+  }
+}
 
 watch(
   () => connStore.isConnected,
-  (connected) => {
+  async (connected) => {
     if (connected) {
       selectedDb.value = 0
       keyStore.currentDb = 0
+      await fetchDbInfo()
     }
   }
 )
@@ -23,6 +79,7 @@ watch(
 async function switchDb(db: number) {
   if (!connStore.activeId) return
   selectedDb.value = db
+  connStore.saveLastDb(connStore.activeId, db)
   await keyStore.selectDb(connStore.activeId, db)
 }
 </script>
@@ -34,13 +91,13 @@ async function switchDb(db: number) {
       :model-value="selectedDb"
       size="small"
       @change="switchDb"
-      style="width: 60px"
+      style="width: 130px"
     >
       <el-option
-        v-for="db in dbs"
-        :key="db"
-        :label="db"
-        :value="db"
+        v-for="db in dbList"
+        :key="db.value"
+        :label="db.label"
+        :value="db.value"
       />
     </el-select>
   </div>
diff --git a/src/components/HashEditor.vue b/src/components/HashEditor.vue
index 57a2e47..56e21b5 100644
--- a/src/components/HashEditor.vue
+++ b/src/components/HashEditor.vue
@@ -1,6 +1,6 @@
 <script setup lang="ts">
 // src/components/HashEditor.vue
-import { ref, watch } from 'vue'
+import { ref, watch, computed, onMounted } from 'vue'
 import { useKeyStore } from '@renderer/stores/key'
 import { useConnectionStore } from '@renderer/stores/connection'
 import { useI18n } from '@renderer/i18n'
@@ -13,6 +13,7 @@ const { t } = useI18n()
 interface HashField {
   field: string
   value: string
+  ttl?: number | null
 }
 
 const fields = ref<HashField[]>([])
@@ -20,12 +21,22 @@ const loading = ref(false)
 const showAddDialog = ref(false)
 const newFieldName = ref('')
 const newFieldValue = ref('')
+const filterText = ref('')
+const supportsHexpire = ref(false)
+
+const filteredFields = computed(() => {
+  if (!filterText.value) return fields.value
+  const lower = filterText.value.toLowerCase()
+  return fields.value.filter(
+    f => f.field.toLowerCase().includes(lower) || f.value.toLowerCase().includes(lower)
+  )
+})
 
 watch(
   () => keyStore.keyData,
   (newData) => {
     if (Array.isArray(newData)) {
-      fields.value = newData.map(([field, value]) => ({ field, value }))
+      fields.value = newData.map(([field, value]) => ({ field, value, ttl: null }))
     }
   },
   { immediate: true }
@@ -37,11 +48,62 @@ async function refresh() {
   try {
     const result = await window.electronAPI.redis.hashScan(connStore.activeId, keyStore.selectedKey, '0', 100)
     keyStore.keyData = result.fields
+    await checkHexpireSupport()
+    if (supportsHexpire.value) {
+      await loadFieldTtls()
+    }
   } finally {
     loading.value = false
   }
 }
 
+async function checkHexpireSupport() {
+  if (!connStore.activeId) return
+  try {
+    const result = await window.electronAPI.redis.execute(connStore.activeId, 'COMMAND', ['INFO', 'HEXPIRE'])
+    supportsHexpire.value = Array.isArray(result) && result.length > 0
+  } catch {
+    supportsHexpire.value = false
+  }
+}
+
+async function loadFieldTtls() {
+  if (!connStore.activeId || !keyStore.selectedKey) return
+  for (const field of fields.value) {
+    try {
+      const ttlResult = await window.electronAPI.redis.execute(connStore.activeId, 'HTTL', [keyStore.selectedKey, 'FIELDS', '1', field.field])
+      field.ttl = Number(ttlResult)
+    } catch {
+      field.ttl = null
+    }
+  }
+}
+
+async function setFieldTtl(field: HashField) {
+  if (!connStore.activeId || !keyStore.selectedKey) return
+  try {
+    const { value: seconds } = await ElMessageBox.prompt(t('editor.ttlTitle'), t('editor.setFieldTtl'), {
+      inputValue: '-1',
+      inputPlaceholder: t('key.ttlHint'),
+    })
+    if (seconds === '-1') {
+      // Remove TTL via PERSIST equivalent — HEXPIRE with 0 or use PERSIST on field
+      await window.electronAPI.redis.execute(connStore.activeId, 'HEXPIRE', [keyStore.selectedKey, '0', 'FIELDS', '1', field.field])
+      field.ttl = -1
+    } else {
+      await window.electronAPI.redis.execute(connStore.activeId, 'HEXPIRE', [keyStore.selectedKey, seconds, 'FIELDS', '1', field.field])
+      field.ttl = Number(seconds)
+    }
+    ElMessage.success(t('editor.saved'))
+  } catch (err: any) {
+    if (err !== 'cancel') ElMessage.error(err.message)
+  }
+}
+
+onMounted(() => {
+  checkHexpireSupport()
+})
+
 async function saveField(item: HashField) {
   if (!connStore.activeId || !keyStore.selectedKey) return
   try {
@@ -83,12 +145,17 @@ async function addField() {
   <div class="hash-editor">
     <div class="editor-toolbar">
       <span class="type-badge">HASH</span>
+      <span class="item-count">{{ t('editor.fieldCount', { n: fields.length }) }}</span>
+      <el-input v-model="filterText" :placeholder="t('editor.filter')" size="small" clearable style="width: 150px" />
       <el-button size="small" type="primary" @click="showAddDialog = true">{{ t('editor.addField') }}</el-button>
       <el-button size="small" @click="refresh" :loading="loading">{{ t('common.refresh') }}</el-button>
+      <span v-if="filterText && filteredFields.length !== fields.length" class="filtered-count">
+        {{ t('editor.filteredCount', { n: filteredFields.length }) }}
+      </span>
     </div>
 
     <div class="hash-table-wrap">
-      <el-table :data="fields" size="small" class="hash-table" max-height="400">
+      <el-table :data="filteredFields" size="small" class="hash-table" max-height="400">
         <el-table-column prop="field" :label="t('editor.field')" min-width="150">
           <template #default="{ row }">
             <el-input v-model="row.field" size="small" class="hash-input" />
@@ -99,9 +166,15 @@ async function addField() {
             <el-input v-model="row.value" size="small" class="hash-input" />
           </template>
         </el-table-column>
-        <el-table-column width="120">
+        <el-table-column v-if="supportsHexpire" :label="t('editor.fieldTtl')" width="100">
+          <template #default="{ row }">
+            <span class="field-ttl">{{ row.ttl != null ? row.ttl : '-' }}</span>
+          </template>
+        </el-table-column>
+        <el-table-column width="180">
           <template #default="{ row }">
             <el-button size="small" type="primary" text @click="saveField(row)">{{ t('editor.save') }}</el-button>
+            <el-button v-if="supportsHexpire" size="small" type="warning" text @click="setFieldTtl(row)">{{ t('editor.setFieldTtl') }}</el-button>
             <el-button size="small" type="danger" text @click="deleteField(row)">{{ t('common.delete') }}</el-button>
           </template>
         </el-table-column>
@@ -168,4 +241,20 @@ async function addField() {
   font-family: 'Cascadia Code', 'Fira Code', monospace;
   font-size: 12px;
 }
+
+.item-count {
+  font-size: 11px;
+  color: var(--text-muted);
+}
+
+.filtered-count {
+  font-size: 11px;
+  color: var(--accent-light);
+}
+
+.field-ttl {
+  font-size: 12px;
+  font-family: 'Cascadia Code', monospace;
+  color: var(--text-muted);
+}
 </style>
diff --git a/src/components/SetEditor.vue b/src/components/SetEditor.vue
index 03ad2b8..dd672d9 100644
--- a/src/components/SetEditor.vue
+++ b/src/components/SetEditor.vue
@@ -62,7 +62,7 @@ async function removeMember(member: string) {
 const filteredMembers = ref<string[]>([])
 watch([members, filterText], () => {
   filteredMembers.value = filterText.value
-    ? members.value.filter(m => m.includes(filterText.value))
+    ? members.value.filter(m => m.toLowerCase().includes(filterText.value.toLowerCase()))
     : members.value
 }, { immediate: true })
 </script>
diff --git a/src/components/Sidebar.vue b/src/components/Sidebar.vue
index 7423f9b..18bab6b 100644
--- a/src/components/Sidebar.vue
+++ b/src/components/Sidebar.vue
@@ -1,6 +1,6 @@
 <script setup lang="ts">
 // src/components/Sidebar.vue
-import { ref } from 'vue'
+import { ref, onMounted, onUnmounted } from 'vue'
 import ConnectionList from './ConnectionList.vue'
 import NewConnectionDialog from './NewConnectionDialog.vue'
 import CommandLog from './CommandLog.vue'
@@ -19,6 +19,41 @@ const editingConnection = ref<ConnectionConfig | null>(null)
 const collapsed = ref(false)
 const commandLogVisible = ref(false)
 
+// Resizable sidebar
+const sidebarWidth = ref(parseInt(localStorage.getItem('sidebarWidth') || '260', 10))
+const isResizing = ref(false)
+
+function startResize(e: MouseEvent) {
+  e.preventDefault()
+  isResizing.value = true
+  document.addEventListener('mousemove', onResize)
+  document.addEventListener('mouseup', stopResize)
+}
+
+function onResize(e: MouseEvent) {
+  if (!isResizing.value) return
+  const newWidth = Math.max(200, Math.min(500, e.clientX))
+  sidebarWidth.value = newWidth
+}
+
+function stopResize() {
+  if (!isResizing.value) return
+  isResizing.value = false
+  localStorage.setItem('sidebarWidth', String(sidebarWidth.value))
+  document.removeEventListener('mousemove', onResize)
+  document.removeEventListener('mouseup', stopResize)
+}
+
+onMounted(() => {
+  // Ensure width is within bounds after loading from localStorage
+  sidebarWidth.value = Math.max(200, Math.min(500, sidebarWidth.value))
+})
+
+onUnmounted(() => {
+  document.removeEventListener('mousemove', onResize)
+  document.removeEventListener('mouseup', stopResize)
+})
+
 function handleEdit(conn: ConnectionConfig | null) {
   editingConnection.value = conn
   dialogVisible.value = true
@@ -103,10 +138,11 @@ useKeyboard({
 </script>
 
 <template>
-  <aside class="sidebar" :class="{ collapsed }">
+  <aside class="sidebar" :class="{ collapsed, resizing: isResizing }" :style="{ width: collapsed ? '36px' : sidebarWidth + 'px' }">
     <div class="sidebar-header" v-if="!collapsed">
       <ConnectionList @edit="handleEdit" />
     </div>
+    <div class="drag-handle" @mousedown="startResize"></div>
     <button class="collapse-btn" @click="collapsed = !collapsed" :title="collapsed ? '展开' : '收缩'">
       <el-icon>
         <component :is="collapsed ? 'ArrowRight' : 'ArrowLeft'" />
@@ -122,7 +158,6 @@ useKeyboard({
 
 <style scoped>
 .sidebar {
-  width: 260px;
   flex-shrink: 0;
   background: var(--bg-secondary);
   border-right: 1px solid var(--border-color);
@@ -130,11 +165,15 @@ useKeyboard({
   flex-direction: column;
   overflow: hidden;
   position: relative;
+  user-select: none;
+}
+
+.sidebar:not(.resizing) {
   transition: width 0.2s ease;
 }
 
 .sidebar.collapsed {
-  width: 36px;
+  width: 36px !important;
 }
 
 .sidebar-header {
@@ -142,6 +181,22 @@ useKeyboard({
   overflow: hidden;
 }
 
+.drag-handle {
+  position: absolute;
+  right: 0;
+  top: 0;
+  bottom: 0;
+  width: 4px;
+  cursor: col-resize;
+  z-index: 5;
+}
+
+.drag-handle:hover,
+.sidebar.resizing .drag-handle {
+  background: var(--accent);
+  opacity: 0.3;
+}
+
 .collapse-btn {
   position: absolute;
   top: 50%;
diff --git a/src/components/SlowLogView.vue b/src/components/SlowLogView.vue
index 41dd902..9d8ed3c 100644
--- a/src/components/SlowLogView.vue
+++ b/src/components/SlowLogView.vue
@@ -1,6 +1,6 @@
 <script setup lang="ts">
 // src/components/SlowLogView.vue
-import { ref } from 'vue'
+import { ref, onMounted } from 'vue'
 import { useConnectionStore } from '@renderer/stores/connection'
 import { useI18n } from '@renderer/i18n'
 
@@ -16,6 +16,20 @@ interface SlowLogEntry {
 
 const entries = ref<SlowLogEntry[]>([])
 const loading = ref(false)
+const configThreshold = ref<string | null>(null)
+const configMaxLen = ref<string | null>(null)
+
+async function fetchConfig() {
+  if (!connStore.activeId) return
+  try {
+    const threshold = await window.electronAPI.redis.execute(connStore.activeId, 'CONFIG', ['GET', 'slowlog-log-slower-than'])
+    const maxLen = await window.electronAPI.redis.execute(connStore.activeId, 'CONFIG', ['GET', 'slowlog-max-len'])
+    configThreshold.value = Array.isArray(threshold) && threshold.length >= 2 ? String(threshold[1]) : null
+    configMaxLen.value = Array.isArray(maxLen) && maxLen.length >= 2 ? String(maxLen[1]) : null
+  } catch {
+    // config fetch failed silently
+  }
+}
 
 async function refresh() {
   if (!connStore.activeId) return
@@ -28,6 +42,7 @@ async function refresh() {
       duration: item[2],
       command: Array.isArray(item[3]) ? item[3].join(' ') : String(item[3]),
     }))
+    await fetchConfig()
   } finally {
     loading.value = false
   }
@@ -43,6 +58,12 @@ function formatTime(ts: number) {
   return new Date(ts * 1000).toLocaleString()
 }
 
+onMounted(() => {
+  if (connStore.activeId) {
+    fetchConfig()
+  }
+})
+
 defineExpose({ refresh })
 </script>
 
@@ -67,6 +88,10 @@ defineExpose({ refresh })
         </el-table-column>
       </el-table>
     </div>
+    <div class="config-footer" v-if="configThreshold !== null || configMaxLen !== null">
+      <span v-if="configThreshold !== null">{{ t('slowlog.threshold') }}: {{ formatDuration(Number(configThreshold)) }}</span>
+      <span v-if="configMaxLen !== null">{{ t('slowlog.maxLen') }}: {{ configMaxLen }}</span>
+    </div>
   </div>
 </template>
 
@@ -102,4 +127,14 @@ defineExpose({ refresh })
   font-family: 'Cascadia Code', monospace;
   font-size: 12px;
 }
+
+.config-footer {
+  display: flex;
+  gap: 24px;
+  padding: 8px 12px;
+  border-top: 1px solid var(--border-color);
+  font-size: 12px;
+  color: var(--text-secondary);
+  flex-shrink: 0;
+}
 </style>
diff --git a/src/components/StatusView.vue b/src/components/StatusView.vue
index 96477f5..6b56abf 100644
--- a/src/components/StatusView.vue
+++ b/src/components/StatusView.vue
@@ -1,6 +1,6 @@
 <script setup lang="ts">
 // src/components/StatusView.vue
-import { ref, onMounted, onUnmounted, watch } from 'vue'
+import { ref, computed, onMounted, onUnmounted, watch } from 'vue'
 import { useConnectionStore } from '@renderer/stores/connection'
 import { useI18n } from '@renderer/i18n'
 import { ElMessage, ElMessageBox } from 'element-plus'
@@ -15,8 +15,73 @@ interface InfoSection {
   items: { key: string; value: string }[]
 }
 
+interface KeyStatEntry {
+  db: string
+  keys: number
+  expires: number
+  avgTtl: number | null
+}
+
 const sections = ref<InfoSection[]>([])
 
+// Auto-refresh toggle state (persisted to localStorage, default ON)
+const autoRefreshEnabled = ref(localStorage.getItem('statusAutoRefresh') !== 'false')
+
+function toggleAutoRefresh() {
+  autoRefreshEnabled.value = !autoRefreshEnabled.value
+  localStorage.setItem('statusAutoRefresh', String(autoRefreshEnabled.value))
+  if (autoRefreshEnabled.value && connStore.isConnected) {
+    startAutoRefresh()
+  } else {
+    stopAutoRefresh()
+  }
+}
+
+// Search filter
+const searchQuery = ref('')
+
+const filteredSections = computed(() => {
+  const q = searchQuery.value.trim().toLowerCase()
+  if (!q) return sections.value
+  return sections.value
+    .map((sec) => {
+      const titleMatch = sec.title.toLowerCase().includes(q)
+      const filteredItems = sec.items.filter(
+        (item) =>
+          item.key.toLowerCase().includes(q) || item.value.toLowerCase().includes(q)
+      )
+      if (titleMatch) {
+        return { ...sec, items: sec.items }
+      }
+      if (filteredItems.length > 0) {
+        return { ...sec, items: filteredItems }
+      }
+      return null
+    })
+    .filter((s): s is InfoSection => s !== null)
+})
+
+// Key Statistics from Keyspace section
+const keyStats = computed<KeyStatEntry[]>(() => {
+  const keyspaceSection = sections.value.find((s) => s.title === 'Keyspace')
+  if (!keyspaceSection) return []
+  return keyspaceSection.items.map((item) => {
+    const db = item.key
+    const keys = parseInt(item.value.match(/keys=(\d+)/)?.[1] ?? '0', 10)
+    const expires = parseInt(item.value.match(/expires=(\d+)/)?.[1] ?? '0', 10)
+    const avgTtlRaw = item.value.match(/avg_ttl=(\d+)/)?.[1]
+    const avgTtl = avgTtlRaw ? parseInt(avgTtlRaw, 10) : null
+    return { db, keys, expires, avgTtl }
+  })
+})
+
+function formatAvgTtl(us: number | null): string {
+  if (us === null) return '-'
+  if (us < 1000) return `${us}μs`
+  if (us < 1000000) return `${(us / 1000).toFixed(1)}ms`
+  return `${(us / 1000000).toFixed(2)}s`
+}
+
 // Redis INFO section name translations
 const sectionTranslations: Record<string, string> = {
   'Server': 'status.sectionServer',
@@ -73,6 +138,7 @@ async function refresh() {
 
 function startAutoRefresh() {
   stopAutoRefresh()
+  if (!autoRefreshEnabled.value) return
   refresh()
   refreshTimer = setInterval(refresh, 1000)
 }
@@ -132,6 +198,13 @@ defineExpose({ refresh })
       <div class="status-actions">
         <el-button size="small" type="danger" @click="handleFlushDb">{{ t('status.flushDb') }}</el-button>
         <el-button size="small" @click="refresh">{{ t('common.refresh') }}</el-button>
+        <el-button
+          size="small"
+          :type="autoRefreshEnabled ? 'primary' : 'default'"
+          @click="toggleAutoRefresh"
+        >
+          {{ t('status.autoRefresh') }}
+        </el-button>
       </div>
     </div>
 
@@ -146,15 +219,44 @@ defineExpose({ refresh })
       </div>
     </div>
 
+    <!-- Search filter -->
+    <div class="search-bar">
+      <el-input
+        v-model="searchQuery"
+        :placeholder="t('status.searchInfo')"
+        size="small"
+        clearable
+        prefix-icon="Search"
+      />
+    </div>
+
+    <!-- Key Statistics table -->
+    <div v-if="keyStats.length > 0" class="key-stats-section">
+      <h3 class="section-title">{{ t('status.keyStats') }}</h3>
+      <el-table :data="keyStats" size="small" stripe max-height="200">
+        <el-table-column :label="t('status.dbColumn')" prop="db" width="100" />
+        <el-table-column :label="t('status.keysColumn')" prop="keys" width="100" />
+        <el-table-column :label="t('status.expiresColumn')" prop="expires" width="100" />
+        <el-table-column :label="t('status.avgTtlColumn')" width="120">
+          <template #default="{ row }">{{ formatAvgTtl(row.avgTtl) }}</template>
+        </el-table-column>
+      </el-table>
+    </div>
+
     <div class="info-sections">
-      <div v-for="section in sections" :key="section.title" class="info-section">
-        <h3 class="section-title">{{ translateSectionTitle(section.title) }}</h3>
-        <div class="section-items">
-          <div v-for="item in section.items" :key="item.key" class="info-row">
-            <span class="info-key">{{ item.key }}</span>
-            <span class="info-val">{{ item.value }}</span>
+      <template v-if="filteredSections.length > 0">
+        <div v-for="section in filteredSections" :key="section.title" class="info-section">
+          <h3 class="section-title">{{ translateSectionTitle(section.title) }}</h3>
+          <div class="section-items">
+            <div v-for="item in section.items" :key="item.key" class="info-row">
+              <span class="info-key">{{ item.key }}</span>
+              <span class="info-val">{{ item.value }}</span>
+            </div>
           </div>
         </div>
+      </template>
+      <div v-else class="no-results">
+        {{ t('status.noResults') }}
       </div>
     </div>
   </div>
@@ -263,4 +365,37 @@ defineExpose({ refresh })
   color: var(--text-primary);
   font-family: 'Cascadia Code', 'Fira Code', monospace;
 }
+
+.search-bar {
+  margin-bottom: 16px;
+}
+
+.key-stats-section {
+  margin-bottom: 16px;
+}
+
+.key-stats-section .section-title {
+  font-size: 12px;
+  font-weight: 700;
+  color: var(--accent-light);
+  padding: 10px 14px;
+  background: var(--bg-tertiary);
+  border: 1px solid var(--border-color);
+  border-bottom: none;
+  border-radius: var(--radius-md) var(--radius-md) 0 0;
+  margin: 0;
+}
+
+.key-stats-section .el-table {
+  border: 1px solid var(--border-color);
+  border-radius: 0 0 var(--radius-md) var(--radius-md);
+}
+
+.no-results {
+  grid-column: 1 / -1;
+  text-align: center;
+  padding: 40px;
+  color: var(--text-muted);
+  font-size: 13px;
+}
 </style>
diff --git a/src/components/StringEditor.vue b/src/components/StringEditor.vue
index 8fa041f..f8864fd 100644
--- a/src/components/StringEditor.vue
+++ b/src/components/StringEditor.vue
@@ -20,6 +20,20 @@ const isEditing = ref(false)
 const selectedFormat = ref('auto')
 const detectedFormat = ref('text')
 
+const MAX_DISPLAY_SIZE = 20 * 1024 * 1024 // 20MB
+
+const isValueTooLarge = computed(() => editedValue.value.length > MAX_DISPLAY_SIZE)
+
+function downloadValue() {
+  const blob = new Blob([editedValue.value], { type: 'text/plain;charset=utf-8' })
+  const url = URL.createObjectURL(blob)
+  const a = document.createElement('a')
+  a.href = url
+  a.download = `value_${keyStore.selectedKey || 'unknown'}.txt`
+  a.click()
+  URL.revokeObjectURL(url)
+}
+
 const monacoTheme = computed(() => {
   if (appStore.theme === 'light') return 'vs'
   return 'vs-dark'
@@ -174,7 +188,12 @@ onUnmounted(() => {
       </template>
     </div>
     <div class="editor-content">
+      <div v-if="isValueTooLarge" class="value-too-large">
+        <span class="too-large-text">{{ t('editor.valueTooLarge') }}</span>
+        <el-button size="small" type="primary" @click="downloadValue">{{ t('editor.download') }}</el-button>
+      </div>
       <vue-monaco-editor
+        v-else
         v-model:value="displayValue"
         :theme="monacoTheme"
         :language="monacoLanguage"
@@ -224,4 +243,18 @@ onUnmounted(() => {
   flex: 1;
   overflow: hidden;
 }
+
+.value-too-large {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  height: 100%;
+  gap: 16px;
+}
+
+.too-large-text {
+  font-size: 14px;
+  color: var(--text-muted);
+}
 </style>
diff --git a/src/components/ZsetEditor.vue b/src/components/ZsetEditor.vue
index 1e3ea07..fcbc0bc 100644
--- a/src/components/ZsetEditor.vue
+++ b/src/components/ZsetEditor.vue
@@ -21,6 +21,7 @@ const filterText = ref('')
 const showAddDialog = ref(false)
 const newMember = ref('')
 const newScore = ref(0)
+const sortOrder = ref<'asc' | 'desc'>('asc')
 
 async function loadMembers() {
   if (!connStore.activeId || !keyStore.selectedKey) return
@@ -71,10 +72,18 @@ async function removeMember(member: string) {
 }
 
 const filteredItems = ref<ZsetItem[]>([])
-watch([items, filterText], () => {
-  filteredItems.value = filterText.value
-    ? items.value.filter(i => i.member.includes(filterText.value))
-    : items.value
+watch([items, filterText, sortOrder], () => {
+  let result = items.value
+  if (filterText.value) {
+    const lower = filterText.value.toLowerCase()
+    result = result.filter(i =>
+      i.member.toLowerCase().includes(lower) || String(i.score).includes(lower)
+    )
+  }
+  result = [...result].sort((a, b) =>
+    sortOrder.value === 'asc' ? a.score - b.score : b.score - a.score
+  )
+  filteredItems.value = result
 }, { immediate: true })
 </script>
 
@@ -84,6 +93,10 @@ watch([items, filterText], () => {
       <span class="type-badge">ZSET</span>
       <span class="item-count">{{ t('editor.members', { n: items.length }) }}</span>
       <el-input v-model="filterText" :placeholder="t('editor.filter')" size="small" clearable style="width: 150px" />
+      <el-radio-group v-model="sortOrder" size="small">
+        <el-radio-button value="asc">{{ t('editor.sortAsc') }}</el-radio-button>
+        <el-radio-button value="desc">{{ t('editor.sortDesc') }}</el-radio-button>
+      </el-radio-group>
       <el-button size="small" type="primary" @click="showAddDialog = true">{{ t('common.add') }}</el-button>
       <el-button size="small" @click="loadMembers" :loading="loading">{{ t('common.refresh') }}</el-button>
     </div>
diff --git a/src/i18n/locales/en.ts b/src/i18n/locales/en.ts
index 901226b..ca1aa4f 100644
--- a/src/i18n/locales/en.ts
+++ b/src/i18n/locales/en.ts
@@ -179,6 +179,14 @@ export default {
     ack: 'ACK',
     ackConfirm: 'ACK selected entries?',
     noGroups: 'No consumer groups',
+    valueTooLarge: 'Value too large to display (>20MB)',
+    download: 'Download',
+    setFieldTtl: 'Set Field TTL',
+    fieldTtl: 'Field TTL',
+    sortAsc: 'Ascending',
+    sortDesc: 'Descending',
+    filteredCount: '{n} filtered',
+    fieldCount: '{n} fields',
   },
   cli: {
     title: 'CLI',
@@ -205,6 +213,8 @@ export default {
     time: 'Time',
     duration: 'Duration',
     command: 'Command',
+    threshold: 'Threshold',
+    maxLen: 'Max Length',
   },
   memory: {
     title: 'Memory Analysis',
@@ -255,6 +265,14 @@ export default {
     connecting: 'Connecting...',
     error: 'Error: {error}',
     noConnection: 'No connection',
+    autoRefresh: 'Auto Refresh',
+    searchInfo: 'Search INFO...',
+    noResults: 'No results',
+    keyStats: 'Key Statistics',
+    dbColumn: 'Database',
+    keysColumn: 'Keys',
+    expiresColumn: 'Expires',
+    avgTtlColumn: 'Avg TTL',
     sectionServer: 'Server',
     sectionClients: 'Clients',
     sectionMemory: 'Memory',
@@ -269,6 +287,8 @@ export default {
   },
   db: {
     label: 'DB',
+    keyCount: '{n} keys',
+    noKeys: 'empty',
   },
   settings: {
     title: 'Settings',
diff --git a/src/i18n/locales/zh-CN.ts b/src/i18n/locales/zh-CN.ts
index 1e38d22..03da5b7 100644
--- a/src/i18n/locales/zh-CN.ts
+++ b/src/i18n/locales/zh-CN.ts
@@ -179,6 +179,14 @@ export default {
     ack: 'ACK',
     ackConfirm: '确认 ACK 选中的条目？',
     noGroups: '暂无消费者组',
+    valueTooLarge: '值过大无法显示 (>20MB)',
+    download: '下载',
+    setFieldTtl: '设置字段 TTL',
+    fieldTtl: '字段 TTL',
+    sortAsc: '升序',
+    sortDesc: '降序',
+    filteredCount: '已过滤 {n} 项',
+    fieldCount: '{n} 个字段',
   },
   cli: {
     title: 'CLI',
@@ -205,6 +213,8 @@ export default {
     time: '时间',
     duration: '耗时',
     command: '命令',
+    threshold: '阈值',
+    maxLen: '最大长度',
   },
   memory: {
     title: '内存分析',
@@ -255,6 +265,14 @@ export default {
     connecting: '连接中...',
     error: '错误: {error}',
     noConnection: '无连接',
+    autoRefresh: '自动刷新',
+    searchInfo: '搜索 INFO...',
+    noResults: '无匹配结果',
+    keyStats: '键空间统计',
+    dbColumn: '数据库',
+    keysColumn: '键数',
+    expiresColumn: '过期数',
+    avgTtlColumn: '平均 TTL',
     sectionServer: '服务器',
     sectionClients: '客户端',
     sectionMemory: '内存',
@@ -269,6 +287,8 @@ export default {
   },
   db: {
     label: '数据库',
+    keyCount: '{n} 个键',
+    noKeys: '空',
   },
   settings: {
     title: '设置',
diff --git a/src/stores/connection.ts b/src/stores/connection.ts
index 2f0aec7..8aed18d 100644
--- a/src/stores/connection.ts
+++ b/src/stores/connection.ts
@@ -42,8 +42,17 @@ export const useConnectionStore = defineStore('connection', () => {
   const serverInfoMap = ref<Record<string, string>>({})
   const healthMap = ref<Record<string, boolean>>({})
   const currentDb = ref<number>(0)
+  const lastDbMap = ref<Record<string, number>>({})
   const healthTimers = new Map<string, ReturnType<typeof setInterval>>()
 
+  // Load lastDbMap from localStorage
+  try {
+    const saved = localStorage.getItem('lastDbMap')
+    if (saved) {
+      lastDbMap.value = JSON.parse(saved)
+    }
+  } catch { /* ignore */ }
+
   const activeConnection = computed(() =>
     connections.value.find((c: ConnectionConfig) => c.id === activeId.value) ?? null
   )
@@ -123,6 +132,14 @@ export const useConnectionStore = defineStore('connection', () => {
         connectedIds.value.push(conn.id)
         activeId.value = conn.id
         serverInfoMap.value[conn.id] = await window.electronAPI.redis.getInfo(conn.id)
+        // Restore last selected DB for this connection
+        const lastDb = lastDbMap.value[conn.id] ?? 0
+        if (lastDb !== 0) {
+          try {
+            await window.electronAPI.redis.selectDb(conn.id, lastDb)
+          } catch { /* ignore */ }
+        }
+        currentDb.value = lastDb
         startHealthCheck(conn.id)
       } else {
         error.value = result.error || 'Connection failed'
@@ -134,9 +151,16 @@ export const useConnectionStore = defineStore('connection', () => {
     }
   }
 
-  function switchTo(id: string) {
+  async function switchTo(id: string) {
     if (connectedIds.value.includes(id)) {
       activeId.value = id
+      const lastDb = lastDbMap.value[id] ?? 0
+      if (lastDb !== currentDb.value) {
+        try {
+          await window.electronAPI.redis.selectDb(id, lastDb)
+        } catch { /* ignore */ }
+      }
+      currentDb.value = lastDb
     }
   }
 
@@ -253,6 +277,12 @@ export const useConnectionStore = defineStore('connection', () => {
     return data
   }
 
+  function saveLastDb(connId: string, db: number) {
+    lastDbMap.value[connId] = db
+    currentDb.value = db
+    localStorage.setItem('lastDbMap', JSON.stringify(lastDbMap.value))
+  }
+
   async function importConnections(jsonStr: string): Promise<number> {
     try {
       const imported = JSON.parse(jsonStr) as ConnectionConfig[]
@@ -274,9 +304,10 @@ export const useConnectionStore = defineStore('connection', () => {
   }
 
   return {
-    connections, activeId, connectedIds, connecting, error, serverInfo, healthOk, currentDb,
+    connections, activeId, connectedIds, connecting, error, serverInfo, healthOk, currentDb, lastDbMap,
     activeConnection, isConnected,
     loadConnections, decryptPassword, getInfo, saveConnection, deleteConnection, reorderConnections,
     connect, disconnect, disconnectById, switchTo, isConnectedById, testConnection, exportConnections, importConnections,
+    saveLastDb,
   }
 })