# QueueStrategy

# Interface: QueueStrategy

Defined in: [packages/db/src/strategies/types.ts:66](https://github.com/TanStack/db/blob/main/packages/db/src/strategies/types.ts#L66)

Queue strategy that processes all executions in order
FIFO: { addItemsTo: 'back', getItemsFrom: 'front' }
LIFO: { addItemsTo: 'back', getItemsFrom: 'back' }

## Extends

- [`BaseStrategy`](BaseStrategy.md)\<`"queue"`\>

## Properties

### \_type

```ts
_type: "queue";
```

Defined in: [packages/db/src/strategies/types.ts:8](https://github.com/TanStack/db/blob/main/packages/db/src/strategies/types.ts#L8)

Type discriminator for strategy identification

#### Inherited from

[`BaseStrategy`](BaseStrategy.md).[`_type`](BaseStrategy.md#_type)

***

### cleanup()

```ts
cleanup: () => void;
```

Defined in: [packages/db/src/strategies/types.ts:23](https://github.com/TanStack/db/blob/main/packages/db/src/strategies/types.ts#L23)

Clean up any resources held by the strategy
Should be called when the strategy is no longer needed

#### Returns

`void`

#### Inherited from

[`BaseStrategy`](BaseStrategy.md).[`cleanup`](BaseStrategy.md#cleanup)

***

### execute()

```ts
execute: <T>(fn) => void | Promise<void>;
```

Defined in: [packages/db/src/strategies/types.ts:15](https://github.com/TanStack/db/blob/main/packages/db/src/strategies/types.ts#L15)

Execute a function according to the strategy's timing rules

#### Type Parameters

##### T

`T` *extends* `object` = `Record`\<`string`, `unknown`\>

#### Parameters

##### fn

() => [`Transaction`](Transaction.md)\<`T`\>

The function to execute

#### Returns

`void` \| `Promise`\<`void`\>

The result of the function execution (if applicable)

#### Inherited from

[`BaseStrategy`](BaseStrategy.md).[`execute`](BaseStrategy.md#execute)

***

### options?

```ts
optional options: QueueStrategyOptions;
```

Defined in: [packages/db/src/strategies/types.ts:67](https://github.com/TanStack/db/blob/main/packages/db/src/strategies/types.ts#L67)