cloudflare-workers

Cloudflare Workers runs your code at the edge across 300+ cities for low-latency responses. Use Wrangler CLI to create a Worker with a fetch handler, configure bindings (D1, KV, R2, Durable Objects) for data access, then deploy to production with a single command.

Workers supports D1 (SQL database), KV (key-value storage), R2 (object storage), and Durable Objects (stateful compute). Runtime APIs include fetch for HTTP requests, HTMLRewriter for HTML manipulation, and cache APIs for response caching.

Yes. Workers handles scheduled tasks through cron triggers, request/response middleware for intercepting traffic, and API endpoint creation. Deploy middleware globally to process requests before they reach your origin.

Wrangler provides local development and testing workflows. Run `wrangler dev` to test Workers locally with binding simulation, then use Wrangler's logging and observability features to monitor production deployments.

Workers requires ES Modules and Service Worker API formats. Code runs in a V8 runtime with fetch event handlers; it's compatible with modern JavaScript but does not support Node.js-specific APIs.

Yes. Wrangler integrates into CI/CD workflows for automated testing and deployment. Configure pipelines to run tests, build your project, and deploy to staging or production environments.