Cloudflare Storage

The Cloudflare KV storage implementation provides a globally distributed, serverless key-value store solution using Cloudflare Workers KV.

Installation

npm install @mastra/cloudflare@latest

Usage

import { CloudflareStore } from "@mastra/cloudflare";

// --- Example 1: Using Workers Binding ---
const storageWorkers = new CloudflareStore({
  bindings: {
    threads: THREADS_KV, // KVNamespace binding for threads table
    messages: MESSAGES_KV, // KVNamespace binding for messages table
    // Add other tables as needed
  },
  keyPrefix: "dev_", // Optional: isolate keys per environment
});

// --- Example 2: Using REST API ---
const storageRest = new CloudflareStore({
  accountId: process.env.CLOUDFLARE_ACCOUNT_ID!, // Cloudflare Account ID
  apiToken: process.env.CLOUDFLARE_API_TOKEN!, // Cloudflare API Token
  namespacePrefix: "dev_", // Optional: isolate namespaces per environment
});

Parameters

bindings?:

Record<string, KVNamespace>

Cloudflare Workers KV bindings (for Workers runtime)

accountId?:

string

Cloudflare Account ID (for REST API)

apiToken?:

string

Cloudflare API Token (for REST API)

namespacePrefix?:

string

Optional prefix for all namespace names (useful for environment isolation)

keyPrefix?:

string

Optional prefix for all keys (useful for environment isolation)

Additional Notes

Schema Management

The storage implementation handles schema creation and updates automatically. It creates the following tables:

• threads: Stores conversation threads
• messages: Stores individual messages
• metadata: Stores additional metadata for threads and messages

Consistency & Propagation

Cloudflare KV is an eventually consistent store, meaning that data may not be immediately available across all regions after a write.

Key Structure & Namespacing

Keys in Cloudflare KV are structured as a combination of a configurable prefix and a table-specific format (e.g., threads:threadId). For Workers deployments, keyPrefix is used to isolate data within a namespace; for REST API deployments, namespacePrefix is used to isolate entire namespaces between environments or applications.