---
title: BackendOptions
summary: BackendOptions controls the options for a backend created for a shield.
url: https://www.fastly.com/documentation/reference/compute/sdks/go/compute-sdk-go/shielding/struct.BackendOptions/
---

**Kind:** Struct  
**Module:** [shielding](https://www.fastly.com/documentation/reference/compute/sdks/go/compute-sdk-go/shielding/)  
**Package:** compute-sdk-go v1.11.0  
**Source:** https://github.com/fastly/compute-sdk-go/blob/d6bf71b04516ed72d6018cab6fff701a865f86e5/shielding/shielding.go#L35

```go
type BackendOptions struct {
	// contains filtered or unexported fields
}
```

BackendOptions controls the options for a backend created for a shield.

## Methods

### BetweenBytesTimeout

**Source:** https://github.com/fastly/compute-sdk-go/blob/d6bf71b04516ed72d6018cab6fff701a865f86e5/shielding/shielding.go#L46

```go
func (b *BackendOptions) BetweenBytesTimeout(t time.Duration) *BackendOptions
```

BetweenBytesTimeout sets the between-bytes timeout for a derived backend.

**Parameters**

- `t`: `time.Duration`

**Returns**

`*BackendOptions`

### FirstByteTimeout

**Source:** https://github.com/fastly/compute-sdk-go/blob/d6bf71b04516ed72d6018cab6fff701a865f86e5/shielding/shielding.go#L40

```go
func (b *BackendOptions) FirstByteTimeout(t time.Duration) *BackendOptions
```

FirstByteTimeout sets the first-byte timeout for a derived backend.

**Parameters**

- `t`: `time.Duration`

**Returns**

`*BackendOptions`