Cloudflare Workers

Introduction to Cloudflare Workers: High-Performance Serverless Computing Platform

What is Cloudflare Workers?

Cloudflare Workers is a serverless computing platform provided by Cloudflare. It allows developers to run JavaScript, Rust, C, and Wasm code directly on Cloudflare's global network edge nodes. This platform primarily helps users quickly and flexibly deploy web applications, API interfaces, and edge logic, significantly reducing response latency. Target users include front-end and back-end developers, API architects, enterprise IT teams, and all application developers pursuing higher access speeds and stronger availability.

Why Choose Cloudflare Workers?

By choosing Cloudflare Workers, users can achieve faster global response times and extremely high availability. Because Workers' code runs on Cloudflare nodes in over 300 cities, visitors can enjoy local-level access experiences no matter where they are. Compared to other similar serverless platforms, Cloudflare Workers' unique advantages also include an extremely simple deployment process, fine-grained pay-as-you-go billing, zero cold start latency, and powerful security isolation capabilities. For teams that need to deploy complex logic globally without managing servers, this platform offers high flexibility and scalability.

Core Features of Cloudflare Workers

• Edge Computing Execution
  Users can have application logic run directly at the network edge close to the user, thereby accelerating page loading, API responses, and data processing. This can significantly improve the overall performance of websites and applications.

• HTTP Request Interception and Rewriting
  Supports custom request forwarding, modifying response content, automatic redirects, and caching strategies. Useful for scenarios like cross-origin requests, A/B testing, and personalized content distribution.

• Serverless API Hosting
  Developers can deploy APIs directly on Workers without configuring hosts or containers. Supports various interface protocols like RESTful and GraphQL, suitable for lightweight microservices and elastic scaling scenarios.

• KV (Key-Value Storage) and Durable Objects Support
  Provides persistent edge storage services, helping developers save user sessions, application configurations, or real-time data, supporting high-concurrency reads and consistency guarantees.

• Integrated Security and Access Control
  Built-in DDoS protection, Web Application Firewall (WAF), rate limiting, and permission management effectively protect application and data security.

How to Start Using Cloudflare Workers?

1. Visit the Cloudflare official website, register, and log in to your account.
2. Go to the Workers product page and click "Create Service" or "Start building."
3. Follow the prompts to enter a service name and choose a development method (such as the online editor or the command-line tool wrangler).
4. Write or paste your JavaScript/Rust/Wasm code, and you can quickly get started using example templates.
5. After deployment, Cloudflare Workers will assign a publicly accessible subdomain, and it also supports custom binding of your domain.
6. In the dashboard, you can view logs, performance, and usage statistics in real-time.

Tips for Using Cloudflare Workers

• Use KV Storage for Data Caching
  For data that needs to be read frequently, using Workers KV for response caching can significantly improve website and API access speeds.

• Manage Sessions with Durable Objects
  When you need to store user sessions or handle high-concurrency data synchronization, you can use Durable Objects to ensure consistency and real-time performance.

• Flexibly Set Security Policies
  In Workers route settings, reasonably configure rate limiting and WAF rules to reduce the risk of malicious access.

Frequently Asked Questions (FAQ) About Cloudflare Workers

Q: Is Cloudflare Workers available now?
A: Cloudflare Workers is officially online, and all users can use it directly after registering a Cloudflare account. The platform supports access via mainstream browsers and command-line tool operations.

Q: What exactly can Cloudflare Workers help me do?
A: You can use Cloudflare Workers to quickly build serverless APIs, static page distribution, custom HTTP routes, middleware services, A/B testing, access log processing, encryption and decryption services, etc. It is suitable for various application scenarios that require response speed and elasticity, such as SaaS platforms, e-commerce systems, and interface aggregation services for global user access.

Q: Do I need to pay to use Cloudflare Workers?
A: Cloudflare Workers offers a free tier and various paid premium services. Free users receive a certain number of requests and storage quotas per month, and can choose to upgrade to paid plans for overages. Paid content typically includes larger quotas, higher performance, and enterprise support services.

Q: When was Cloudflare Workers launched?
A: Cloudflare Workers was first released in late 2017 and has since been continuously upgraded and improved in core capabilities.

Q: Compared to AWS Lambda@Edge, which is more suitable for me?
A: Both Cloudflare Workers and AWS Lambda@Edge provide edge computing services. Workers are easier to get started with, have a simpler deployment process, and zero cold start latency, making them suitable for small projects and front-end logic extensions that require fast global responses. Lambda@Edge is more suitable for applications deeply integrated into the AWS ecosystem, supporting more AWS cloud services. When choosing, consider your existing cloud infrastructure and specific needs for price and performance.

Q: What development languages does Cloudflare Workers support?
A: Cloudflare Workers mainly supports JavaScript and WebAssembly (Wasm), and also supports running Wasm compiled from languages like Rust and C on the platform. It is suitable for most web applications and script logic.

Q: How do Workers bind to my own domain?
A: The platform supports binding Workers services to your own domain or subdomain. Users only need to add domain resolution or configure routing rules in the Cloudflare console to complete the binding.