Claude Code के साथ Cloudflare Workers

Claude Code से Cloudflare Workers Development को तेज़ करें

Cloudflare Workers, Cloudflare के global network पर JavaScript/TypeScript run करने वाला serverless platform है। V8 engine पर आधारित, zero cold start के साथ तेज़ response देता है। Claude Code का उपयोग करके, Workers-specific APIs और bindings को भी efficiently handle किया जा सकता है।

Project Setup

> Cloudflare Workers का project बनाओ।
> Hono framework और D1 database use करने वाला setup।

npm create cloudflare@latest my-worker -- --template=hello-world
cd my-worker
npm install hono

# wrangler.toml
name = "my-api"
main = "src/index.ts"
compatibility_date = "2024-12-01"

[[d1_databases]]
binding = "DB"
database_name = "my-database"
database_id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"

[[kv_namespaces]]
binding = "CACHE"
id = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"

[[r2_buckets]]
binding = "STORAGE"
bucket_name = "my-bucket"

Hono से API Implementation

> Hono framework से CRUD API बनाओ।
> D1 database के साथ integration भी implement करो।

// src/index.ts
import { Hono } from 'hono';
import { cors } from 'hono/cors';
import { jwt } from 'hono/jwt';

type Bindings = {
  DB: D1Database;
  CACHE: KVNamespace;
  STORAGE: R2Bucket;
  JWT_SECRET: string;
};

const app = new Hono<{ Bindings: Bindings }>();

app.use('/api/*', cors());

// Articles की list
app.get('/api/posts', async (c) => {
  const { results } = await c.env.DB.prepare(
    'SELECT * FROM posts ORDER BY created_at DESC LIMIT 20'
  ).all();

  return c.json({ posts: results });
});

// Article बनाना
app.post('/api/posts', async (c) => {
  const { title, content } = await c.req.json();

  const result = await c.env.DB.prepare(
    'INSERT INTO posts (title, content, created_at) VALUES (?, ?, datetime())'
  )
    .bind(title, content)
    .run();

  // Cache clear करें
  await c.env.CACHE.delete('posts:latest');

  return c.json({ id: result.meta.last_row_id }, 201);
});

// Image upload (R2)
app.post('/api/upload', async (c) => {
  const formData = await c.req.formData();
  const file = formData.get('file') as File;

  if (!file) {
    return c.json({ error: 'File required' }, 400);
  }

  const key = `uploads/${Date.now()}-${file.name}`;
  await c.env.STORAGE.put(key, file.stream(), {
    httpMetadata: { contentType: file.type },
  });

  return c.json({ key, url: `/api/files/${key}` });
});

export default app;

D1 Database Migration

-- migrations/0001_create_tables.sql
CREATE TABLE IF NOT EXISTS posts (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  title TEXT NOT NULL,
  content TEXT NOT NULL,
  slug TEXT UNIQUE,
  published BOOLEAN DEFAULT FALSE,
  created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
  updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
);

CREATE INDEX idx_posts_slug ON posts(slug);
CREATE INDEX idx_posts_published ON posts(published, created_at);

# Migration चलाएं
npx wrangler d1 migrations apply my-database

# Local development
npx wrangler d1 migrations apply my-database --local
npx wrangler dev

KV Cache का उपयोग

// src/cache.ts
export async function getCachedData<T>(
  kv: KVNamespace,
  key: string,
  fetcher: () => Promise<T>,
  ttl = 3600
): Promise<T> {
  const cached = await kv.get(key, 'json');
  if (cached) return cached as T;

  const data = await fetcher();
  await kv.put(key, JSON.stringify(data), { expirationTtl: ttl });
  return data;
}

// Usage example
app.get('/api/stats', async (c) => {
  const stats = await getCachedData(
    c.env.CACHE,
    'stats:daily',
    async () => {
      const { results } = await c.env.DB.prepare(
        'SELECT COUNT(*) as count FROM posts WHERE published = TRUE'
      ).all();
      return results[0];
    },
    300 // 5 minute cache
  );

  return c.json(stats);
});

Deploy और Monitoring

# Deploy
npx wrangler deploy

# Logs देखें
npx wrangler tail

# Secrets set करें
npx wrangler secret put JWT_SECRET

Summary

Cloudflare Workers की rich bindings और Claude Code को मिलाकर, edge पर चलने वाली full-stack API efficiently बना सकते हैं। Serverless functions guide और edge computing introduction भी reference के लिए देखें।

Cloudflare Workers के details के लिए Cloudflare Workers official documentation देखें।