remote-cloudflare-kv

Setup

npm install --save remote-cloudflare-kv
# or
yarn add remote-cloudflare-kv
# or
pnpm install --save remote-cloudflare-kv

Usage

Init

import CloudflareKV from 'remote-cloudflare-kv';

export const NAMESPACE = new CloudflareKV({
  account_id: process.env.CF_ACCOUNT_ID || '',
  namespace_id: process.env.CF_NAMESPACE_ID || '',
  // use bearer token
  api_token: process.env.CF_API_TOKEN || '',
  // or use email & api key
  api_email: '',
  api_key: ''
});

Writing key-value pairs

To create a new key-value pair, or to update the value for a particular key, call the put method on any namespace you have bound to your script. The basic form of this method looks like this:

await NAMESPACE.put(key, value);
// void

Expiring keys:

await NAMESPACE.put(key, value, { expiration: secondsSinceEpoch });

await NAMESPACE.put(key, value, { expirationTtl: secondsFromNow });

Metadata:

await NAMESPACE.put(key, value, {
  metadata: { someMetadataKey: 'someMetadataValue' }
});

Get key-value pair

To get the value for a given key, you can call the get method on any namespace you have bound to your script:

// replace key & type
const result = await NAMESPACE.get('key', { type: 'json' });
console.log(result);
// {"hello": 1}

Supported types: text, json, arrayBuffer, stream.

Normalises type, ignoring cacheTtl as there is only one "edge location": the user's computer

Get key-value pair with Metadata

You can get the metadata associated with a key-value pair alongside its value by calling the getWithMetadata method on a namespace you have bound in your script:

const result = await NAMESPACE.getWithMetadata(key, { type: 'json' });
//  {"value": {"hello": 1}, "metadata": {"someKey": "someVal"}}

Deleting key-value pairs

To delete a key-value pair, call the delete method on any namespace you have bound to your script:

await NAMESPACE.delete(key);
// void

Listing keys

You can use a list operation to see all of the keys that live in a given namespace.

const result = await NAMESPACE.list();
console.log(result);

More detail:

The list method has this signature (in TypeScript):

await NAMESPACE.list({ prefix: string, limit: number, cursor: string });

The list method returns a promise which resolves with an object that looks like this:

{
  "keys": [
    {
      "name": "foo",
      "expiration": 1234,
      "metadata": { "someMetadataKey": "someMetadataValue" }
    }
  ],
  "list_complete": false,
  "cursor": "6Ck1la0VxJ0djhidm1MdX2FyD"
}

Refs

• Runtime API: https://developers.cloudflare.com/workers/runtime-apis/kv/
• RESTful API: https://developers.cloudflare.com/api/operations/workers-kv-namespace-list-namespaces

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