Workers Best Practices

What it does

This skill provides a curated set of guidelines and patterns for building efficient, secure, and scalable applications on Cloudflare Workers. It helps developers optimize their code to leverage the edge network effectively while adhering to platform constraints.

When to use it

• Architecting new serverless functions that require low latency at the global edge.
• Refactoring existing Node.js or Go applications to run within Workers limits.
• Implementing security headers and rate limiting strategies for public-facing APIs.
• Debugging performance bottlenecks related to memory usage or execution time.

Key capabilities

• Defines optimal patterns for handling requests and responses in the edge runtime.
• Outlines strategies for managing stateless logic within strict memory constraints.
• Provides guidance on integrating with Cloudflare's native services like KV, R2, and D1.
• Highlights common anti-patterns to avoid during development and deployment.

Example prompts

• "What are the best practices for handling large file uploads in a Cloudflare Worker?"
• "How can I optimize my Workers code to reduce cold start times?"
• "List the security configurations recommended for a public API hosted on Cloudflare."

Tips & gotchas

Ensure your application logic remains stateless, as Workers are designed for ephemeral execution. Always test your functions against the specific concurrency and memory limits defined in the latest documentation before deploying to production.