---
title: LookupBuilder
url: https://www.fastly.com/documentation/reference/compute/sdks/cpp/fastly/kv_store/class.LookupBuilder/
---

**Kind:** Class  
**Module:** [kv_store](https://www.fastly.com/documentation/reference/compute/sdks/cpp/fastly/kv_store/)  
**Package:** compute-sdk-cpp 0.7.0  
**Source:** https://github.com/fastly/compute-sdk-cpp/blob/ff911e47be2f319e83a9cde960d2c3c5db534280/include/fastly/kv_store.h#L116

Include `fastly/kv_store.h` to use this class.

## Methods

### execute

**Source:** https://github.com/fastly/compute-sdk-cpp/blob/ff911e47be2f319e83a9cde960d2c3c5db534280/include/fastly/kv_store.h#L119

```cpp
expected<LookupResponse> fastly::kv_store::LookupBuilder::execute(std::string_view key) const
```

Execute the lookup and wait for the response.

**Parameters**

- `key`: `std::string_view`

**Returns**

`expected<LookupResponse>`

### execute_async

**Source:** https://github.com/fastly/compute-sdk-cpp/blob/ff911e47be2f319e83a9cde960d2c3c5db534280/include/fastly/kv_store.h#L122

```cpp
expected<PendingLookupHandle> fastly::kv_store::LookupBuilder::execute_async(std::string_view key) const
```

Execute the lookup asynchronously.

**Parameters**

- `key`: `std::string_view`

**Returns**

`expected<PendingLookupHandle>`