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# Mastra.listMemory()

`.listMemory()` 方法傳回 Mastra 執行個體中註冊的所有 Memory 執行個體。

## 使用範例

```typescript
const memoryInstances = mastra.listMemory()

for (const [key, memory] of Object.entries(memoryInstances)) {
  console.log(`Memory "${key}": ${memory.id}`)
}
```

## 參數

此方法不接受任何參數。

## 傳回值

**memory** (`Record<string, MastraMemory>`): 包含所有已註冊 Memory 執行個體的物件，以其註冊鍵作為鍵。

## 範例：檢查已註冊的 Memory

```typescript
import { Mastra } from '@mastra/core'
import { Memory } from '@mastra/memory'
import { LibSQLStore } from '@mastra/libsql'

const conversationMemory = new Memory({
  id: 'conversation-memory',
  storage: new LibSQLStore({ id: 'conversation-store', url: ':memory:' }),
})

const analyticsMemory = new Memory({
  id: 'analytics-memory',
  storage: new LibSQLStore({ id: 'analytics-store', url: ':memory:' }),
})

const mastra = new Mastra({
  memory: {
    conversationMemory,
    analyticsMemory,
  },
})

// List all registered memory instances
const allMemory = mastra.listMemory()
console.log(Object.keys(allMemory)) // ["conversationMemory", "analyticsMemory"]
```

## 相關內容

- [Mastra.getMemory()](https://mastra.zisheng.pro/zh-TW/reference/core/getMemory)
- [Memory 概覽](https://mastra.zisheng.pro/zh-TW/docs/memory/overview)