fix: memory analysis dark mode stripe, scan speed, and NaN total size

- Dark mode: add --el-fill-color-lighter and --el-table-current-row-bg-color
  to .el-table overrides so striped rows render with proper contrast
- Scan speed: add batchKeyMemoryUsage pipeline (TYPE + MEMORY USAGE in one
  Redis round-trip instead of 2×N sequential IPC calls)
- Scan speed: decouple scan loop from UI via 300ms flush buffer, keeping
  el-table re-render frequency capped at ~3/s
- Scan speed: use shallowRef for entries to skip deep reactive proxies
- NaN fix: handle ioredis stringNumbers:true by converting via Number()
  instead of typeof === 'number'
- formatSize: guard against non-finite input, add TB/PB units

src/main/ipc-handlers.ts

@@ -149,6 +149,9 @@ export function registerIpcHandlers(): void {
   ipcMain.handle('redis:memoryUsage', async (_e, id: string, key: string) => {
     return redis.memoryUsage(id, key)
   })
+  ipcMain.handle('redis:batchMemoryUsage', async (_e, id: string, keys: string[]) => {
+    return redis.batchKeyMemoryUsage(id, keys)
+  })
 
   // Redis - String
   ipcMain.handle('redis:getString', async (_e, id: string, key: string) => {

src/main/redis/keys.ts

@@ -51,6 +51,41 @@ export async function memoryUsage(id: string, key: string): Promise<number | nul
   return client.memory('USAGE', key) as Promise<number | null>
 }
 
+export interface KeyMemoryInfo {
+  key: string
+  type: string
+  size: number
+}
+
+/**
+ * Batch-fetch TYPE + MEMORY USAGE for multiple keys via a single ioredis pipeline.
+ * One Redis round-trip instead of 2×N sequential commands.
+ */
+export async function batchKeyMemoryUsage(
+  id: string,
+  keys: string[]
+): Promise<KeyMemoryInfo[]> {
+  const client = requireClient(id)
+  if (keys.length === 0) return []
+  const pipeline = client.pipeline()
+  for (const key of keys) {
+    pipeline.type(key)
+    pipeline.memory('USAGE', key)
+  }
+  const results = await pipeline.exec()
+  const entries: KeyMemoryInfo[] = []
+  for (let i = 0; i < keys.length; i++) {
+    const typeRes = results?.[i * 2]
+    const sizeRes = results?.[i * 2 + 1]
+    const type = typeRes?.[0] ? 'none' : String(typeRes?.[1] ?? 'none')
+    const rawSize = sizeRes?.[0] ? null : sizeRes?.[1]
+    // ioredis stringNumbers:true may return strings like "528" instead of 528
+    const size = Number.isFinite(Number(rawSize)) ? Number(rawSize) : 0
+    entries.push({ key: keys[i], type, size })
+  }
+  return entries
+}
+
 export async function scanKeys(
   id: string,
   cursor: string,

src/preload/index.d.ts

@@ -55,6 +55,7 @@ export interface ElectronAPI {
     setTTL: (id: string, key: string, ttl: number) => Promise<void>
     batchDelete: (id: string, keys: string[]) => Promise<number>
     memoryUsage: (id: string, key: string) => Promise<number | null>
+    batchMemoryUsage: (id: string, keys: string[]) => Promise<{ key: string; type: string; size: number }[]>
     // String
     getString: (id: string, key: string) => Promise<string | null>
     setString: (id: string, key: string, value: string) => Promise<void>

src/preload/index.ts

@@ -96,6 +96,8 @@ const electronAPI = {
     // Memory
     memoryUsage: (id: string, key: string): Promise<number | null> =>
       ipcRenderer.invoke('redis:memoryUsage', id, key),
+    batchMemoryUsage: (id: string, keys: string[]): Promise<{ key: string; type: string; size: number }[]> =>
+      ipcRenderer.invoke('redis:batchMemoryUsage', id, keys),
     batchDelete: (id: string, keys: string[]): Promise<number> =>
       ipcRenderer.invoke('redis:batchDelete', id, keys),
     // Stream

src/renderer/src/components/views/MemoryAnalysis.vue

@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { ref, computed, onUnmounted } from 'vue'
+import { ref, shallowRef, computed, onUnmounted } from 'vue'
 import { useConnectionStore } from '@renderer/stores/connection'
 import { useI18n } from '@renderer/i18n'
 
@@ -12,15 +12,18 @@ interface KeyEntry {
   type: string
 }
 
-const entries = ref<KeyEntry[]>([])
+const entries = shallowRef<KeyEntry[]>([])
 const scanning = ref(false)
 const paused = ref(false)
-const totalSize = ref(0)
 const scannedCount = ref(0)
 const minSizeKB = ref(0)
 const sortAsc = ref(false)
 const scanAbort = ref<AbortController | null>(null)
 
+const SCAN_COUNT = 200
+/** How often (ms) to flush buffered scan results into the reactive ref */
+const FLUSH_INTERVAL = 300
+
 const sortedEntries = computed(() => {
   const filtered = minSizeKB.value > 0
     ? entries.value.filter(e => e.size >= minSizeKB.value * 1024)
@@ -31,10 +34,11 @@ const sortedEntries = computed(() => {
 const totalFiltered = computed(() => sortedEntries.value.reduce((s, e) => s + e.size, 0))
 
 function formatSize(bytes: number): string {
-  if (bytes === 0) return '0 B'
-  const units = ['B', 'KB', 'MB', 'GB']
+  if (!Number.isFinite(bytes) || bytes <= 0) return '0 B'
+  const units = ['B', 'KB', 'MB', 'GB', 'TB', 'PB']
   const i = Math.floor(Math.log(bytes) / Math.log(1024))
-  return (bytes / Math.pow(1024, Math.floor(i))).toFixed(i > 0 ? 1 : 0) + ' ' + units[Math.min(i, units.length - 1)]
+  const idx = Math.min(i, units.length - 1)
+  return (bytes / Math.pow(1024, idx)).toFixed(idx > 0 ? 1 : 0) + ' ' + units[idx]
 }
 
 function formatType(type: string): string {
@@ -53,13 +57,24 @@ async function sleep(ms: number) {
 async function startScan() {
   if (!connStore.activeId) return
   entries.value = []
-  totalSize.value = 0
   scannedCount.value = 0
   scanning.value = true
   paused.value = false
   const controller = new AbortController()
   scanAbort.value = controller
 
+  // Non-reactive buffer: scan loop pushes here, timer flushes to entries.value
+  const buffer: KeyEntry[] = []
+  let flushTimer: ReturnType<typeof setInterval> | null = null
+
+  function flush() {
+    if (buffer.length === 0) return
+    const chunk = buffer.splice(0)
+    entries.value = [...entries.value, ...chunk]
+  }
+
+  flushTimer = setInterval(flush, FLUSH_INTERVAL)
+
   try {
     let cursor = '0'
     do {
@@ -69,30 +84,23 @@ async function startScan() {
         if (controller.signal.aborted) break
       }
       const result = await window.electronAPI.redis.scanKeys(
-        connStore.activeId, cursor, '*', 100
+        connStore.activeId, cursor, '*', SCAN_COUNT
       )
       cursor = result.cursor
+      if (controller.signal.aborted || result.keys.length === 0) continue
 
-      for (const key of result.keys) {
-        if (controller.signal.aborted) break
-        try {
-          const [type, size] = await Promise.all([
-            window.electronAPI.redis.getKeyType(connStore.activeId, key),
-            window.electronAPI.redis.memoryUsage(connStore.activeId, key),
-          ])
-          const sz = size ?? 0
-          entries.value.push({ key, size: sz, type })
-          totalSize.value += sz
-          scannedCount.value++
-        } catch {
-          // skip keys that error
-        }
-        await sleep(10) // throttle to avoid overwhelming Redis
-      }
+      const batch = await window.electronAPI.redis.batchMemoryUsage(
+        connStore.activeId, result.keys
+      )
+      if (controller.signal.aborted) break
+      buffer.push(...batch)
+      scannedCount.value += batch.length
     } while (cursor !== '0' && !controller.signal.aborted)
   } catch (err: any) {
     console.error('Scan error:', err)
   } finally {
+    if (flushTimer) clearInterval(flushTimer)
+    flush() // final flush: push any remaining buffered entries
     scanning.value = false
     paused.value = false
     scanAbort.value = null

src/renderer/src/styles/global.css

@@ -147,6 +147,8 @@ body {
   --el-table-text-color: var(--text-primary);
   --el-table-header-text-color: var(--text-secondary);
   --el-table-border-color: var(--border-color);
+  --el-fill-color-lighter: var(--bg-secondary);
+  --el-table-current-row-bg-color: var(--bg-card-active);
 }
 
 /* Dialog */