## Write multiple key-value pairs

`kv.namespaces.bulk_update(strnamespace_id, NamespaceBulkUpdateParams**kwargs)  -> NamespaceBulkUpdateResponse`

**put** `/accounts/{account_id}/storage/kv/namespaces/{namespace_id}/bulk`

Write multiple keys and values at once. Body should be an array of up to 10,000 key-value pairs to be stored, along with optional expiration information. Existing values and expirations will be overwritten. If neither `expiration` nor `expiration_ttl` is specified, the key-value pair will never expire. If both are set, `expiration_ttl` is used and `expiration` is ignored. The entire request size must be 100 megabytes or less.

### Parameters

- `account_id: str`

  Identifier.

- `namespace_id: str`

  Namespace identifier tag.

- `body: Iterable[Body]`

  - `key: str`

    A key's name. The name may be at most 512 bytes. All printable, non-whitespace characters are valid.

  - `value: str`

    A UTF-8 encoded string to be stored, up to 25 MiB in length.

  - `base64: Optional[bool]`

    Indicates whether or not the server should base64 decode the value before storing it. Useful for writing values that wouldn't otherwise be valid JSON strings, such as images.

  - `expiration: Optional[float]`

    Expires the key at a certain time, measured in number of seconds since the UNIX epoch.

  - `expiration_ttl: Optional[float]`

    Expires the key after a number of seconds. Must be at least 60.

  - `metadata: Optional[object]`

    Arbitrary JSON that is associated with a key.

### Returns

- `class NamespaceBulkUpdateResponse: …`

  - `successful_key_count: Optional[float]`

    Number of keys successfully updated.

  - `unsuccessful_keys: Optional[List[str]]`

    Name of the keys that failed to be fully updated. They should be retried.

### Example

```python
import os
from cloudflare import Cloudflare

client = Cloudflare(
    api_token=os.environ.get("CLOUDFLARE_API_TOKEN"),  # This is the default and can be omitted
)
response = client.kv.namespaces.bulk_update(
    namespace_id="0f2ac74b498b48028cb68387c421e279",
    account_id="023e105f4ecef8ad9ca31a8372d0c353",
    body=[{
        "key": "My-Key",
        "value": "Some string",
    }],
)
print(response.successful_key_count)
```

#### Response

```json
{
  "errors": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "messages": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "success": true,
  "result": {
    "successful_key_count": 100,
    "unsuccessful_keys": [
      "string"
    ]
  }
}
```